diff --git a/src/diagnosticMessages.generated.ts b/src/diagnosticMessages.generated.ts
index 2db65faca4..13eaca9da9 100644
--- a/src/diagnosticMessages.generated.ts
+++ b/src/diagnosticMessages.generated.ts
@@ -123,6 +123,7 @@ export enum DiagnosticCode {
   Generic_type_0_requires_1_type_argument_s = 2314,
   Type_0_is_not_generic = 2315,
   Type_0_is_not_assignable_to_type_1 = 2322,
+  Property_0_is_private_in_type_1_but_not_in_type_2 = 2325,
   Index_signature_is_missing_in_type_0 = 2329,
   _this_cannot_be_referenced_in_current_location = 2332,
   _this_cannot_be_referenced_in_constructor_arguments = 2333,
@@ -148,8 +149,11 @@ export enum DiagnosticCode {
   Duplicate_function_implementation = 2393,
   This_overload_signature_is_not_compatible_with_its_implementation_signature = 2394,
   Individual_declarations_in_merged_declaration_0_must_be_all_exported_or_all_local = 2395,
+  Property_0_in_type_1_is_not_assignable_to_the_same_property_in_base_type_2 = 2416,
   A_class_can_only_implement_an_interface = 2422,
   A_namespace_declaration_cannot_be_located_prior_to_a_class_or_function_with_which_it_is_merged = 2434,
+  Types_have_separate_declarations_of_a_private_property_0 = 2442,
+  Property_0_is_protected_in_type_1_but_public_in_type_2 = 2444,
   Property_0_is_protected_and_only_accessible_within_class_1_and_its_subclasses = 2445,
   Variable_0_used_before_its_declaration = 2448,
   Cannot_redeclare_block_scoped_variable_0 = 2451,
@@ -307,6 +311,7 @@ export function diagnosticCodeToString(code: DiagnosticCode): string {
     case 2314: return "Generic type '{0}' requires {1} type argument(s).";
     case 2315: return "Type '{0}' is not generic.";
     case 2322: return "Type '{0}' is not assignable to type '{1}'.";
+    case 2325: return "Property '{0}' is private in type '{1}' but not in type '{2}'.";
     case 2329: return "Index signature is missing in type '{0}'.";
     case 2332: return "'this' cannot be referenced in current location.";
     case 2333: return "'this' cannot be referenced in constructor arguments.";
@@ -332,8 +337,11 @@ export function diagnosticCodeToString(code: DiagnosticCode): string {
     case 2393: return "Duplicate function implementation.";
     case 2394: return "This overload signature is not compatible with its implementation signature.";
     case 2395: return "Individual declarations in merged declaration '{0}' must be all exported or all local.";
+    case 2416: return "Property '{0}' in type '{1}' is not assignable to the same property in base type '{2}'.";
     case 2422: return "A class can only implement an interface.";
     case 2434: return "A namespace declaration cannot be located prior to a class or function with which it is merged.";
+    case 2442: return "Types have separate declarations of a private property '{0}'.";
+    case 2444: return "Property '{0}' is protected in type '{1}' but public in type '{2}'.";
     case 2445: return "Property '{0}' is protected and only accessible within class '{1}' and its subclasses.";
     case 2448: return "Variable '{0}' used before its declaration.";
     case 2451: return "Cannot redeclare block-scoped variable '{0}'";
diff --git a/src/diagnosticMessages.json b/src/diagnosticMessages.json
index 0b6d18ab7b..7c030a5da6 100644
--- a/src/diagnosticMessages.json
+++ b/src/diagnosticMessages.json
@@ -121,6 +121,7 @@
   "Generic type '{0}' requires {1} type argument(s).": 2314,
   "Type '{0}' is not generic.": 2315,
   "Type '{0}' is not assignable to type '{1}'.": 2322,
+  "Property '{0}' is private in type '{1}' but not in type '{2}'.": 2325,
   "Index signature is missing in type '{0}'.": 2329,
   "'this' cannot be referenced in current location.": 2332,
   "'this' cannot be referenced in constructor arguments.": 2333,
@@ -146,8 +147,11 @@
   "Duplicate function implementation.": 2393,
   "This overload signature is not compatible with its implementation signature.": 2394,
   "Individual declarations in merged declaration '{0}' must be all exported or all local.": 2395,
+  "Property '{0}' in type '{1}' is not assignable to the same property in base type '{2}'.": 2416,
   "A class can only implement an interface.": 2422,
   "A namespace declaration cannot be located prior to a class or function with which it is merged.": 2434,
+  "Types have separate declarations of a private property '{0}'.": 2442,
+  "Property '{0}' is protected in type '{1}' but public in type '{2}'.": 2444,
   "Property '{0}' is protected and only accessible within class '{1}' and its subclasses.": 2445,
   "Variable '{0}' used before its declaration.": 2448,
   "Cannot redeclare block-scoped variable '{0}'" : 2451,
diff --git a/src/program.ts b/src/program.ts
index 8df389b4b4..e1faf7596f 100644
--- a/src/program.ts
+++ b/src/program.ts
@@ -1513,13 +1513,6 @@ export class Program extends DiagnosticEmitter {
                     }
                   }
                 }
-              } else {
-                this.errorRelated(
-                  DiagnosticCode.Duplicate_identifier_0,
-                  thisMember.identifierNode.range,
-                  baseMember.identifierNode.range,
-                  baseMember.identifierNode.text
-                );
               }
             }
           }
diff --git a/src/resolver.ts b/src/resolver.ts
index dd79ab78f3..5903551901 100644
--- a/src/resolver.ts
+++ b/src/resolver.ts
@@ -3092,18 +3092,26 @@ export class Resolver extends DiagnosticEmitter {
             let fieldPrototype = <FieldPrototype>member;
             let fieldTypeNode = fieldPrototype.typeNode;
             let fieldType: Type | null = null;
-            // TODO: handle duplicate non-private fields specifically?
-            if (!fieldTypeNode) {
-              if (base) {
-                let baseMembers = base.members;
-                if (baseMembers !== null && baseMembers.has(fieldPrototype.name)) {
-                  let baseField = assert(baseMembers.get(fieldPrototype.name));
-                  if (!baseField.is(CommonFlags.PRIVATE)) {
-                    assert(baseField.kind == ElementKind.FIELD);
-                    fieldType = (<Field>baseField).type;
-                  }
+            let existingField: Field | null = null;
+            if (base) {
+              let baseMembers = base.members;
+              if (baseMembers !== null && baseMembers.has(fieldPrototype.name)) {
+                let baseField = assert(baseMembers.get(fieldPrototype.name));
+                if (baseField.kind == ElementKind.FIELD) {
+                  existingField = <Field>baseField;
+                } else {
+                  this.errorRelated(
+                    DiagnosticCode.Duplicate_identifier_0,
+                    fieldPrototype.identifierNode.range, baseField.identifierNode.range,
+                    fieldPrototype.name
+                  );
                 }
               }
+            }
+            if (!fieldTypeNode) {
+              if (existingField !== null && !existingField.is(CommonFlags.PRIVATE)) {
+                fieldType = existingField.type;
+              }
               if (!fieldType) {
                 if (reportMode == ReportMode.REPORT) {
                   this.error(
@@ -3130,12 +3138,83 @@ export class Resolver extends DiagnosticEmitter {
               }
             }
             if (!fieldType) break; // did report above
+            if (existingField !== null) {
+              // visibility checks
+              /*
+                          existingField visibility on top
+                +==================+=========+===========+=========+
+                | Visibility Table | Private | Protected | Public  |
+                +==================+=========+===========+=========+
+                | Private          | error   | error     | error   |
+                +------------------+---------+-----------+---------+
+                | Protected        | error   | allowed   | error   |
+                +------------------+---------+-----------+---------+
+                | Public           | error   | allowed   | allowed |
+                +------------------+---------+-----------+---------+
+              */
+
+              let baseClass = <Class>base;
+
+              // handle cases row-by-row
+              if (fieldPrototype.is(CommonFlags.PRIVATE)) {
+                if (existingField.is(CommonFlags.PRIVATE)) {
+                  this.errorRelated(
+                    DiagnosticCode.Types_have_separate_declarations_of_a_private_property_0,
+                    fieldPrototype.identifierNode.range, existingField.identifierNode.range,
+                    fieldPrototype.name
+                  );
+                } else {
+                  this.errorRelated(
+                    DiagnosticCode.Property_0_is_private_in_type_1_but_not_in_type_2,
+                    fieldPrototype.identifierNode.range, existingField.identifierNode.range,
+                    fieldPrototype.name, instance.internalName, baseClass.internalName
+                  );
+                }
+              } else if (fieldPrototype.is(CommonFlags.PROTECTED)) {
+                if (existingField.is(CommonFlags.PRIVATE)) {
+                  this.errorRelated(
+                    DiagnosticCode.Property_0_is_private_in_type_1_but_not_in_type_2,
+                    fieldPrototype.identifierNode.range, existingField.identifierNode.range,
+                    fieldPrototype.name, baseClass.internalName, instance.internalName
+                  );
+                } else if (!existingField.is(CommonFlags.PROTECTED)) {
+                  // may be implicitly public
+                  this.errorRelated(
+                    DiagnosticCode.Property_0_is_protected_in_type_1_but_public_in_type_2,
+                    fieldPrototype.identifierNode.range, existingField.identifierNode.range,
+                    fieldPrototype.name, instance.internalName, baseClass.internalName
+                  );
+                }
+              } else {
+                // fieldPrototype is public here
+                if (existingField.is(CommonFlags.PRIVATE)) {
+                  this.errorRelated(
+                    DiagnosticCode.Property_0_is_private_in_type_1_but_not_in_type_2,
+                    fieldPrototype.identifierNode.range, existingField.identifierNode.range,
+                    fieldPrototype.name, baseClass.internalName, instance.internalName
+                  );
+                }
+              }
+
+              // assignability
+              if (!fieldType.isStrictlyAssignableTo(existingField.type)) {
+                this.errorRelated(
+                  DiagnosticCode.Property_0_in_type_1_is_not_assignable_to_the_same_property_in_base_type_2,
+                  fieldPrototype.identifierNode.range, existingField.identifierNode.range,
+                  fieldPrototype.name, instance.internalName, baseClass.internalName
+                );
+              }
+            }
             let fieldInstance = new Field(fieldPrototype, instance, fieldType);
             assert(isPowerOf2(fieldType.byteSize));
-            let mask = fieldType.byteSize - 1;
-            if (memoryOffset & mask) memoryOffset = (memoryOffset | mask) + 1;
-            fieldInstance.memoryOffset = memoryOffset;
-            memoryOffset += fieldType.byteSize;
+            if (existingField !== null) {
+              fieldInstance.memoryOffset = existingField.memoryOffset;
+            } else {
+              let mask = fieldType.byteSize - 1;
+              if (memoryOffset & mask) memoryOffset = (memoryOffset | mask) + 1;
+              fieldInstance.memoryOffset = memoryOffset;
+              memoryOffset += fieldType.byteSize;
+            }
             instance.add(memberName, fieldInstance); // reports
             break;
           }
diff --git a/tests/compiler/duplicate-field-errors.json b/tests/compiler/duplicate-field-errors.json
new file mode 100644
index 0000000000..b32e0e0cc0
--- /dev/null
+++ b/tests/compiler/duplicate-field-errors.json
@@ -0,0 +1,13 @@
+{
+  "asc_flags": [
+  ],
+  "stderr": [
+    "TS2442: Types have separate declarations of a private property 'privPriv'.",
+    "TS2325: Property 'privProt' is private in type 'duplicate-field-errors/A' but not in type 'duplicate-field-errors/B'.",
+    "TS2325: Property 'privPub' is private in type 'duplicate-field-errors/A' but not in type 'duplicate-field-errors/B'.",
+    "TS2325: Property 'protPriv' is private in type 'duplicate-field-errors/B' but not in type 'duplicate-field-errors/A'.",
+    "TS2325: Property 'pubPriv' is private in type 'duplicate-field-errors/B' but not in type 'duplicate-field-errors/A'.",
+    "TS2444: Property 'pubProt' is protected in type 'duplicate-field-errors/B' but public in type 'duplicate-field-errors/A'.",
+    "TS2300: Duplicate identifier 'method'."
+  ]
+}
diff --git a/tests/compiler/duplicate-field-errors.ts b/tests/compiler/duplicate-field-errors.ts
new file mode 100644
index 0000000000..b68e6f323a
--- /dev/null
+++ b/tests/compiler/duplicate-field-errors.ts
@@ -0,0 +1,38 @@
+class A {
+  private privPriv: i32;
+  private privProt: i32;
+  private privPub: i32;
+
+  // --
+
+  protected protPriv: i32;
+  public pubPriv: i32;
+
+  // --
+
+  public pubProt: i32;
+
+  // --
+
+  method(): void {}
+}
+
+export class B extends A {
+  private privPriv: i32;
+  protected privProt: i32;
+  public privPub: i32;
+
+  // --
+
+  private protPriv: i32;
+  private pubPriv: i32;
+
+  // --
+
+  protected pubProt: i32;
+
+  // --
+
+  public method: i32;
+}
+
diff --git a/tests/compiler/duplicate-fields.json b/tests/compiler/duplicate-fields.json
new file mode 100644
index 0000000000..1bdd02b1be
--- /dev/null
+++ b/tests/compiler/duplicate-fields.json
@@ -0,0 +1,4 @@
+{
+  "asc_flags": [
+  ]
+}
diff --git a/tests/compiler/duplicate-fields.optimized.wat b/tests/compiler/duplicate-fields.optimized.wat
new file mode 100644
index 0000000000..fbd19917c3
--- /dev/null
+++ b/tests/compiler/duplicate-fields.optimized.wat
@@ -0,0 +1,2404 @@
+(module
+ (type $i32_i32_=>_none (func (param i32 i32)))
+ (type $i32_=>_i32 (func (param i32) (result i32)))
+ (type $none_=>_none (func))
+ (type $i32_=>_none (func (param i32)))
+ (type $i32_i32_=>_i32 (func (param i32 i32) (result i32)))
+ (type $i32_i32_i32_i32_=>_none (func (param i32 i32 i32 i32)))
+ (type $i32_i32_i32_=>_none (func (param i32 i32 i32)))
+ (type $none_=>_i32 (func (result i32)))
+ (import "env" "abort" (func $~lib/builtins/abort (param i32 i32 i32 i32)))
+ (global $~lib/rt/itcms/total (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/threshold (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/state (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/visitCount (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/pinSpace (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/iter (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/toSpace (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/white (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/fromSpace (mut i32) (i32.const 0))
+ (global $~lib/rt/tlsf/ROOT (mut i32) (i32.const 0))
+ (global $duplicate-fields/foo (mut i32) (i32.const 0))
+ (global $duplicate-fields/raz (mut i32) (i32.const 0))
+ (global $duplicate-fields/B3 i32 (i32.const 9))
+ (global $~lib/memory/__stack_pointer (mut i32) (i32.const 17980))
+ (memory $0 1)
+ (data (i32.const 1036) "<")
+ (data (i32.const 1048) "\01\00\00\00(\00\00\00A\00l\00l\00o\00c\00a\00t\00i\00o\00n\00 \00t\00o\00o\00 \00l\00a\00r\00g\00e")
+ (data (i32.const 1100) "<")
+ (data (i32.const 1112) "\01\00\00\00 \00\00\00~\00l\00i\00b\00/\00r\00t\00/\00i\00t\00c\00m\00s\00.\00t\00s")
+ (data (i32.const 1228) "<")
+ (data (i32.const 1240) "\01\00\00\00$\00\00\00I\00n\00d\00e\00x\00 \00o\00u\00t\00 \00o\00f\00 \00r\00a\00n\00g\00e")
+ (data (i32.const 1292) ",")
+ (data (i32.const 1304) "\01\00\00\00\14\00\00\00~\00l\00i\00b\00/\00r\00t\00.\00t\00s")
+ (data (i32.const 1372) "<")
+ (data (i32.const 1384) "\01\00\00\00\1e\00\00\00~\00l\00i\00b\00/\00r\00t\00/\00t\00l\00s\00f\00.\00t\00s")
+ (data (i32.const 1436) "<")
+ (data (i32.const 1448) "\01\00\00\00&\00\00\00d\00u\00p\00l\00i\00c\00a\00t\00e\00-\00f\00i\00e\00l\00d\00s\00.\00t\00s")
+ (data (i32.const 1504) "\0b\00\00\00 \00\00\00\00\00\00\00 ")
+ (data (i32.const 1532) " \00\00\00\00\00\00\00 \00\00\00\03")
+ (data (i32.const 1556) " ")
+ (data (i32.const 1568) "\05\00\00\00 \00\00\00\06\00\00\00 \00\00\00\n\00\00\00 ")
+ (export "B3" (global $duplicate-fields/B3))
+ (export "memory" (memory $0))
+ (export "B3#get:protProt" (func $export:duplicate-fields/B3#get:protProt))
+ (export "B3#set:protProt" (func $export:duplicate-fields/B3#set:protProt))
+ (export "B3#get:protPub" (func $export:duplicate-fields/B3#get:protPub))
+ (export "B3#set:protPub" (func $export:duplicate-fields/B3#set:protPub))
+ (export "B3#get:pubPub" (func $export:duplicate-fields/B3#get:pubPub))
+ (export "B3#set:pubPub" (func $export:duplicate-fields/B3#set:pubPub))
+ (export "B3#constructor" (func $export:duplicate-fields/B3#constructor))
+ (start $~start)
+ (func $~lib/rt/itcms/visitRoots
+  (local $0 i32)
+  (local $1 i32)
+  global.get $duplicate-fields/foo
+  local.tee $0
+  if
+   local.get $0
+   call $~lib/rt/itcms/__visit
+  end
+  global.get $duplicate-fields/raz
+  local.tee $0
+  if
+   local.get $0
+   call $~lib/rt/itcms/__visit
+  end
+  i32.const 1248
+  call $~lib/rt/itcms/__visit
+  i32.const 1056
+  call $~lib/rt/itcms/__visit
+  global.get $~lib/rt/itcms/pinSpace
+  local.tee $1
+  i32.load offset=4
+  i32.const -4
+  i32.and
+  local.set $0
+  loop $while-continue|0
+   local.get $0
+   local.get $1
+   i32.ne
+   if
+    local.get $0
+    i32.load offset=4
+    i32.const 3
+    i32.and
+    i32.const 3
+    i32.ne
+    if
+     i32.const 0
+     i32.const 1120
+     i32.const 159
+     i32.const 16
+     call $~lib/builtins/abort
+     unreachable
+    end
+    local.get $0
+    i32.const 20
+    i32.add
+    call $~lib/rt/__visit_members
+    local.get $0
+    i32.load offset=4
+    i32.const -4
+    i32.and
+    local.set $0
+    br $while-continue|0
+   end
+  end
+ )
+ (func $~lib/rt/itcms/Object#makeGray (param $0 i32)
+  (local $1 i32)
+  (local $2 i32)
+  (local $3 i32)
+  global.get $~lib/rt/itcms/iter
+  local.get $0
+  i32.eq
+  if
+   local.get $0
+   i32.load offset=8
+   local.tee $1
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 1120
+    i32.const 147
+    i32.const 30
+    call $~lib/builtins/abort
+    unreachable
+   end
+   local.get $1
+   global.set $~lib/rt/itcms/iter
+  end
+  block $__inlined_func$~lib/rt/itcms/Object#unlink
+   local.get $0
+   i32.load offset=4
+   i32.const -4
+   i32.and
+   local.tee $1
+   i32.eqz
+   if
+    i32.const 0
+    local.get $0
+    i32.const 17980
+    i32.lt_u
+    local.get $0
+    i32.load offset=8
+    select
+    i32.eqz
+    if
+     i32.const 0
+     i32.const 1120
+     i32.const 127
+     i32.const 18
+     call $~lib/builtins/abort
+     unreachable
+    end
+    br $__inlined_func$~lib/rt/itcms/Object#unlink
+   end
+   local.get $0
+   i32.load offset=8
+   local.tee $2
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 1120
+    i32.const 131
+    i32.const 16
+    call $~lib/builtins/abort
+    unreachable
+   end
+   local.get $1
+   local.get $2
+   i32.store offset=8
+   local.get $2
+   local.get $2
+   i32.load offset=4
+   i32.const 3
+   i32.and
+   local.get $1
+   i32.or
+   i32.store offset=4
+  end
+  global.get $~lib/rt/itcms/toSpace
+  local.set $2
+  local.get $0
+  i32.load offset=12
+  local.tee $1
+  i32.const 1
+  i32.le_u
+  if (result i32)
+   i32.const 1
+  else
+   i32.const 1504
+   i32.load
+   local.get $1
+   i32.lt_u
+   if
+    i32.const 1248
+    i32.const 1312
+    i32.const 22
+    i32.const 28
+    call $~lib/builtins/abort
+    unreachable
+   end
+   local.get $1
+   i32.const 3
+   i32.shl
+   i32.const 1508
+   i32.add
+   i32.load
+   i32.const 32
+   i32.and
+  end
+  local.set $3
+  local.get $2
+  i32.load offset=8
+  local.set $1
+  local.get $0
+  local.get $2
+  global.get $~lib/rt/itcms/white
+  i32.eqz
+  i32.const 2
+  local.get $3
+  select
+  i32.or
+  i32.store offset=4
+  local.get $0
+  local.get $1
+  i32.store offset=8
+  local.get $1
+  local.get $1
+  i32.load offset=4
+  i32.const 3
+  i32.and
+  local.get $0
+  i32.or
+  i32.store offset=4
+  local.get $2
+  local.get $0
+  i32.store offset=8
+ )
+ (func $~lib/rt/itcms/__visit (param $0 i32)
+  local.get $0
+  i32.eqz
+  if
+   return
+  end
+  global.get $~lib/rt/itcms/white
+  local.get $0
+  i32.const 20
+  i32.sub
+  local.tee $0
+  i32.load offset=4
+  i32.const 3
+  i32.and
+  i32.eq
+  if
+   local.get $0
+   call $~lib/rt/itcms/Object#makeGray
+   global.get $~lib/rt/itcms/visitCount
+   i32.const 1
+   i32.add
+   global.set $~lib/rt/itcms/visitCount
+  end
+ )
+ (func $~lib/rt/tlsf/removeBlock (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  local.get $1
+  i32.load
+  local.tee $2
+  i32.const 1
+  i32.and
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 268
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $2
+  i32.const -4
+  i32.and
+  local.tee $2
+  i32.const 12
+  i32.lt_u
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 270
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $2
+  i32.const 256
+  i32.lt_u
+  if (result i32)
+   local.get $2
+   i32.const 4
+   i32.shr_u
+  else
+   i32.const 31
+   local.get $2
+   i32.const 1073741820
+   local.get $2
+   i32.const 1073741820
+   i32.lt_u
+   select
+   local.tee $2
+   i32.clz
+   i32.sub
+   local.tee $4
+   i32.const 7
+   i32.sub
+   local.set $3
+   local.get $2
+   local.get $4
+   i32.const 4
+   i32.sub
+   i32.shr_u
+   i32.const 16
+   i32.xor
+  end
+  local.tee $2
+  i32.const 16
+  i32.lt_u
+  i32.const 0
+  local.get $3
+  i32.const 23
+  i32.lt_u
+  select
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 284
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.load offset=8
+  local.set $5
+  local.get $1
+  i32.load offset=4
+  local.tee $4
+  if
+   local.get $4
+   local.get $5
+   i32.store offset=8
+  end
+  local.get $5
+  if
+   local.get $5
+   local.get $4
+   i32.store offset=4
+  end
+  local.get $2
+  local.get $3
+  i32.const 4
+  i32.shl
+  i32.add
+  i32.const 2
+  i32.shl
+  local.get $0
+  i32.add
+  i32.load offset=96
+  local.get $1
+  i32.eq
+  if
+   local.get $2
+   local.get $3
+   i32.const 4
+   i32.shl
+   i32.add
+   i32.const 2
+   i32.shl
+   local.get $0
+   i32.add
+   local.get $5
+   i32.store offset=96
+   local.get $5
+   i32.eqz
+   if
+    local.get $3
+    i32.const 2
+    i32.shl
+    local.get $0
+    i32.add
+    local.tee $1
+    i32.load offset=4
+    i32.const -2
+    local.get $2
+    i32.rotl
+    i32.and
+    local.set $2
+    local.get $1
+    local.get $2
+    i32.store offset=4
+    local.get $2
+    i32.eqz
+    if
+     local.get $0
+     local.get $0
+     i32.load
+     i32.const -2
+     local.get $3
+     i32.rotl
+     i32.and
+     i32.store
+    end
+   end
+  end
+ )
+ (func $~lib/rt/tlsf/insertBlock (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  local.get $1
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 201
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.load
+  local.tee $3
+  i32.const 1
+  i32.and
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 203
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.const 4
+  i32.add
+  local.get $1
+  i32.load
+  i32.const -4
+  i32.and
+  i32.add
+  local.tee $4
+  i32.load
+  local.tee $2
+  i32.const 1
+  i32.and
+  if
+   local.get $0
+   local.get $4
+   call $~lib/rt/tlsf/removeBlock
+   local.get $1
+   local.get $3
+   i32.const 4
+   i32.add
+   local.get $2
+   i32.const -4
+   i32.and
+   i32.add
+   local.tee $3
+   i32.store
+   local.get $1
+   i32.const 4
+   i32.add
+   local.get $1
+   i32.load
+   i32.const -4
+   i32.and
+   i32.add
+   local.tee $4
+   i32.load
+   local.set $2
+  end
+  local.get $3
+  i32.const 2
+  i32.and
+  if
+   local.get $1
+   i32.const 4
+   i32.sub
+   i32.load
+   local.tee $1
+   i32.load
+   local.tee $6
+   i32.const 1
+   i32.and
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 1392
+    i32.const 221
+    i32.const 16
+    call $~lib/builtins/abort
+    unreachable
+   end
+   local.get $0
+   local.get $1
+   call $~lib/rt/tlsf/removeBlock
+   local.get $1
+   local.get $6
+   i32.const 4
+   i32.add
+   local.get $3
+   i32.const -4
+   i32.and
+   i32.add
+   local.tee $3
+   i32.store
+  end
+  local.get $4
+  local.get $2
+  i32.const 2
+  i32.or
+  i32.store
+  local.get $3
+  i32.const -4
+  i32.and
+  local.tee $2
+  i32.const 12
+  i32.lt_u
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 233
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $2
+  local.get $1
+  i32.const 4
+  i32.add
+  i32.add
+  local.get $4
+  i32.ne
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 234
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $4
+  i32.const 4
+  i32.sub
+  local.get $1
+  i32.store
+  local.get $2
+  i32.const 256
+  i32.lt_u
+  if (result i32)
+   local.get $2
+   i32.const 4
+   i32.shr_u
+  else
+   i32.const 31
+   local.get $2
+   i32.const 1073741820
+   local.get $2
+   i32.const 1073741820
+   i32.lt_u
+   select
+   local.tee $2
+   i32.clz
+   i32.sub
+   local.tee $3
+   i32.const 7
+   i32.sub
+   local.set $5
+   local.get $2
+   local.get $3
+   i32.const 4
+   i32.sub
+   i32.shr_u
+   i32.const 16
+   i32.xor
+  end
+  local.tee $2
+  i32.const 16
+  i32.lt_u
+  i32.const 0
+  local.get $5
+  i32.const 23
+  i32.lt_u
+  select
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 251
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $2
+  local.get $5
+  i32.const 4
+  i32.shl
+  i32.add
+  i32.const 2
+  i32.shl
+  local.get $0
+  i32.add
+  i32.load offset=96
+  local.set $3
+  local.get $1
+  i32.const 0
+  i32.store offset=4
+  local.get $1
+  local.get $3
+  i32.store offset=8
+  local.get $3
+  if
+   local.get $3
+   local.get $1
+   i32.store offset=4
+  end
+  local.get $2
+  local.get $5
+  i32.const 4
+  i32.shl
+  i32.add
+  i32.const 2
+  i32.shl
+  local.get $0
+  i32.add
+  local.get $1
+  i32.store offset=96
+  local.get $0
+  local.get $0
+  i32.load
+  i32.const 1
+  local.get $5
+  i32.shl
+  i32.or
+  i32.store
+  local.get $5
+  i32.const 2
+  i32.shl
+  local.get $0
+  i32.add
+  local.tee $0
+  local.get $0
+  i32.load offset=4
+  i32.const 1
+  local.get $2
+  i32.shl
+  i32.or
+  i32.store offset=4
+ )
+ (func $~lib/rt/tlsf/addMemory (param $0 i32) (param $1 i32) (param $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  local.get $1
+  local.get $2
+  i32.gt_u
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 377
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.const 19
+  i32.add
+  i32.const -16
+  i32.and
+  i32.const 4
+  i32.sub
+  local.set $1
+  local.get $0
+  i32.load offset=1568
+  local.tee $4
+  if
+   local.get $1
+   local.get $4
+   i32.const 4
+   i32.add
+   i32.lt_u
+   if
+    i32.const 0
+    i32.const 1392
+    i32.const 384
+    i32.const 16
+    call $~lib/builtins/abort
+    unreachable
+   end
+   local.get $4
+   local.get $1
+   i32.const 16
+   i32.sub
+   i32.eq
+   if
+    local.get $4
+    i32.load
+    local.set $3
+    local.get $1
+    i32.const 16
+    i32.sub
+    local.set $1
+   end
+  else
+   local.get $1
+   local.get $0
+   i32.const 1572
+   i32.add
+   i32.lt_u
+   if
+    i32.const 0
+    i32.const 1392
+    i32.const 397
+    i32.const 5
+    call $~lib/builtins/abort
+    unreachable
+   end
+  end
+  local.get $2
+  i32.const -16
+  i32.and
+  local.get $1
+  i32.sub
+  local.tee $2
+  i32.const 20
+  i32.lt_u
+  if
+   return
+  end
+  local.get $1
+  local.get $3
+  i32.const 2
+  i32.and
+  local.get $2
+  i32.const 8
+  i32.sub
+  local.tee $2
+  i32.const 1
+  i32.or
+  i32.or
+  i32.store
+  local.get $1
+  i32.const 0
+  i32.store offset=4
+  local.get $1
+  i32.const 0
+  i32.store offset=8
+  local.get $2
+  local.get $1
+  i32.const 4
+  i32.add
+  i32.add
+  local.tee $2
+  i32.const 2
+  i32.store
+  local.get $0
+  local.get $2
+  i32.store offset=1568
+  local.get $0
+  local.get $1
+  call $~lib/rt/tlsf/insertBlock
+ )
+ (func $~lib/rt/tlsf/initialize
+  (local $0 i32)
+  (local $1 i32)
+  memory.size
+  local.tee $1
+  i32.const 1
+  i32.lt_s
+  if (result i32)
+   i32.const 1
+   local.get $1
+   i32.sub
+   memory.grow
+   i32.const 0
+   i32.lt_s
+  else
+   i32.const 0
+  end
+  if
+   unreachable
+  end
+  i32.const 17984
+  i32.const 0
+  i32.store
+  i32.const 19552
+  i32.const 0
+  i32.store
+  loop $for-loop|0
+   local.get $0
+   i32.const 23
+   i32.lt_u
+   if
+    local.get $0
+    i32.const 2
+    i32.shl
+    i32.const 17984
+    i32.add
+    i32.const 0
+    i32.store offset=4
+    i32.const 0
+    local.set $1
+    loop $for-loop|1
+     local.get $1
+     i32.const 16
+     i32.lt_u
+     if
+      local.get $1
+      local.get $0
+      i32.const 4
+      i32.shl
+      i32.add
+      i32.const 2
+      i32.shl
+      i32.const 17984
+      i32.add
+      i32.const 0
+      i32.store offset=96
+      local.get $1
+      i32.const 1
+      i32.add
+      local.set $1
+      br $for-loop|1
+     end
+    end
+    local.get $0
+    i32.const 1
+    i32.add
+    local.set $0
+    br $for-loop|0
+   end
+  end
+  i32.const 17984
+  i32.const 19556
+  memory.size
+  i32.const 16
+  i32.shl
+  call $~lib/rt/tlsf/addMemory
+  i32.const 17984
+  global.set $~lib/rt/tlsf/ROOT
+ )
+ (func $~lib/rt/itcms/step (result i32)
+  (local $0 i32)
+  (local $1 i32)
+  (local $2 i32)
+  block $break|0
+   block $case2|0
+    block $case1|0
+     block $case0|0
+      global.get $~lib/rt/itcms/state
+      br_table $case0|0 $case1|0 $case2|0 $break|0
+     end
+     i32.const 1
+     global.set $~lib/rt/itcms/state
+     i32.const 0
+     global.set $~lib/rt/itcms/visitCount
+     call $~lib/rt/itcms/visitRoots
+     global.get $~lib/rt/itcms/toSpace
+     global.set $~lib/rt/itcms/iter
+     global.get $~lib/rt/itcms/visitCount
+     return
+    end
+    global.get $~lib/rt/itcms/white
+    i32.eqz
+    local.set $1
+    global.get $~lib/rt/itcms/iter
+    i32.load offset=4
+    i32.const -4
+    i32.and
+    local.set $0
+    loop $while-continue|1
+     global.get $~lib/rt/itcms/toSpace
+     local.get $0
+     i32.ne
+     if
+      local.get $0
+      global.set $~lib/rt/itcms/iter
+      local.get $0
+      i32.load offset=4
+      i32.const 3
+      i32.and
+      local.get $1
+      i32.ne
+      if
+       local.get $0
+       local.get $1
+       local.get $0
+       i32.load offset=4
+       i32.const -4
+       i32.and
+       i32.or
+       i32.store offset=4
+       i32.const 0
+       global.set $~lib/rt/itcms/visitCount
+       local.get $0
+       i32.const 20
+       i32.add
+       call $~lib/rt/__visit_members
+       global.get $~lib/rt/itcms/visitCount
+       return
+      end
+      local.get $0
+      i32.load offset=4
+      i32.const -4
+      i32.and
+      local.set $0
+      br $while-continue|1
+     end
+    end
+    i32.const 0
+    global.set $~lib/rt/itcms/visitCount
+    call $~lib/rt/itcms/visitRoots
+    global.get $~lib/rt/itcms/toSpace
+    global.get $~lib/rt/itcms/iter
+    i32.load offset=4
+    i32.const -4
+    i32.and
+    i32.eq
+    if
+     global.get $~lib/memory/__stack_pointer
+     local.set $0
+     loop $while-continue|0
+      local.get $0
+      i32.const 17980
+      i32.lt_u
+      if
+       local.get $0
+       i32.load
+       call $~lib/rt/itcms/__visit
+       local.get $0
+       i32.const 4
+       i32.add
+       local.set $0
+       br $while-continue|0
+      end
+     end
+     global.get $~lib/rt/itcms/iter
+     i32.load offset=4
+     i32.const -4
+     i32.and
+     local.set $0
+     loop $while-continue|2
+      global.get $~lib/rt/itcms/toSpace
+      local.get $0
+      i32.ne
+      if
+       local.get $0
+       i32.load offset=4
+       i32.const 3
+       i32.and
+       local.get $1
+       i32.ne
+       if
+        local.get $0
+        local.get $1
+        local.get $0
+        i32.load offset=4
+        i32.const -4
+        i32.and
+        i32.or
+        i32.store offset=4
+        local.get $0
+        i32.const 20
+        i32.add
+        call $~lib/rt/__visit_members
+       end
+       local.get $0
+       i32.load offset=4
+       i32.const -4
+       i32.and
+       local.set $0
+       br $while-continue|2
+      end
+     end
+     global.get $~lib/rt/itcms/fromSpace
+     local.set $0
+     global.get $~lib/rt/itcms/toSpace
+     global.set $~lib/rt/itcms/fromSpace
+     local.get $0
+     global.set $~lib/rt/itcms/toSpace
+     local.get $1
+     global.set $~lib/rt/itcms/white
+     local.get $0
+     i32.load offset=4
+     i32.const -4
+     i32.and
+     global.set $~lib/rt/itcms/iter
+     i32.const 2
+     global.set $~lib/rt/itcms/state
+    end
+    global.get $~lib/rt/itcms/visitCount
+    return
+   end
+   global.get $~lib/rt/itcms/iter
+   local.tee $0
+   global.get $~lib/rt/itcms/toSpace
+   i32.ne
+   if
+    local.get $0
+    i32.load offset=4
+    local.tee $1
+    i32.const -4
+    i32.and
+    global.set $~lib/rt/itcms/iter
+    global.get $~lib/rt/itcms/white
+    i32.eqz
+    local.get $1
+    i32.const 3
+    i32.and
+    i32.ne
+    if
+     i32.const 0
+     i32.const 1120
+     i32.const 228
+     i32.const 20
+     call $~lib/builtins/abort
+     unreachable
+    end
+    local.get $0
+    i32.const 17980
+    i32.lt_u
+    if
+     local.get $0
+     i32.const 0
+     i32.store offset=4
+     local.get $0
+     i32.const 0
+     i32.store offset=8
+    else
+     global.get $~lib/rt/itcms/total
+     local.get $0
+     i32.load
+     i32.const -4
+     i32.and
+     i32.const 4
+     i32.add
+     i32.sub
+     global.set $~lib/rt/itcms/total
+     local.get $0
+     i32.const 4
+     i32.add
+     local.tee $1
+     i32.const 17980
+     i32.ge_u
+     if
+      global.get $~lib/rt/tlsf/ROOT
+      i32.eqz
+      if
+       call $~lib/rt/tlsf/initialize
+      end
+      global.get $~lib/rt/tlsf/ROOT
+      local.get $1
+      i32.const 4
+      i32.sub
+      local.set $0
+      local.get $1
+      i32.const 15
+      i32.and
+      i32.const 1
+      local.get $1
+      select
+      if (result i32)
+       i32.const 1
+      else
+       local.get $0
+       i32.load
+       i32.const 1
+       i32.and
+      end
+      if
+       i32.const 0
+       i32.const 1392
+       i32.const 559
+       i32.const 3
+       call $~lib/builtins/abort
+       unreachable
+      end
+      local.get $0
+      local.get $0
+      i32.load
+      i32.const 1
+      i32.or
+      i32.store
+      local.get $0
+      call $~lib/rt/tlsf/insertBlock
+     end
+    end
+    i32.const 10
+    return
+   end
+   global.get $~lib/rt/itcms/toSpace
+   local.tee $0
+   local.get $0
+   i32.store offset=4
+   local.get $0
+   local.get $0
+   i32.store offset=8
+   i32.const 0
+   global.set $~lib/rt/itcms/state
+  end
+  i32.const 0
+ )
+ (func $~lib/rt/tlsf/searchBlock (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  local.get $1
+  i32.const 256
+  i32.lt_u
+  if
+   local.get $1
+   i32.const 4
+   i32.shr_u
+   local.set $1
+  else
+   local.get $1
+   i32.const 536870910
+   i32.lt_u
+   if
+    i32.const 1
+    i32.const 27
+    local.get $1
+    i32.clz
+    i32.sub
+    i32.shl
+    local.get $1
+    i32.add
+    i32.const 1
+    i32.sub
+    local.set $1
+   end
+   local.get $1
+   i32.const 31
+   local.get $1
+   i32.clz
+   i32.sub
+   local.tee $2
+   i32.const 4
+   i32.sub
+   i32.shr_u
+   i32.const 16
+   i32.xor
+   local.set $1
+   local.get $2
+   i32.const 7
+   i32.sub
+   local.set $2
+  end
+  local.get $1
+  i32.const 16
+  i32.lt_u
+  i32.const 0
+  local.get $2
+  i32.const 23
+  i32.lt_u
+  select
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 330
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $2
+  i32.const 2
+  i32.shl
+  local.get $0
+  i32.add
+  i32.load offset=4
+  i32.const -1
+  local.get $1
+  i32.shl
+  i32.and
+  local.tee $1
+  if (result i32)
+   local.get $1
+   i32.ctz
+   local.get $2
+   i32.const 4
+   i32.shl
+   i32.add
+   i32.const 2
+   i32.shl
+   local.get $0
+   i32.add
+   i32.load offset=96
+  else
+   local.get $0
+   i32.load
+   i32.const -1
+   local.get $2
+   i32.const 1
+   i32.add
+   i32.shl
+   i32.and
+   local.tee $1
+   if (result i32)
+    local.get $1
+    i32.ctz
+    local.tee $1
+    i32.const 2
+    i32.shl
+    local.get $0
+    i32.add
+    i32.load offset=4
+    local.tee $2
+    i32.eqz
+    if
+     i32.const 0
+     i32.const 1392
+     i32.const 343
+     i32.const 18
+     call $~lib/builtins/abort
+     unreachable
+    end
+    local.get $2
+    i32.ctz
+    local.get $1
+    i32.const 4
+    i32.shl
+    i32.add
+    i32.const 2
+    i32.shl
+    local.get $0
+    i32.add
+    i32.load offset=96
+   else
+    i32.const 0
+   end
+  end
+ )
+ (func $~lib/rt/itcms/__new (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  local.get $0
+  i32.const 1073741804
+  i32.ge_u
+  if
+   i32.const 1056
+   i32.const 1120
+   i32.const 260
+   i32.const 31
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/rt/itcms/total
+  global.get $~lib/rt/itcms/threshold
+  i32.ge_u
+  if
+   block $__inlined_func$~lib/rt/itcms/interrupt
+    i32.const 2048
+    local.set $2
+    loop $do-loop|0
+     local.get $2
+     call $~lib/rt/itcms/step
+     i32.sub
+     local.set $2
+     global.get $~lib/rt/itcms/state
+     i32.eqz
+     if
+      global.get $~lib/rt/itcms/total
+      i64.extend_i32_u
+      i64.const 200
+      i64.mul
+      i64.const 100
+      i64.div_u
+      i32.wrap_i64
+      i32.const 1024
+      i32.add
+      global.set $~lib/rt/itcms/threshold
+      br $__inlined_func$~lib/rt/itcms/interrupt
+     end
+     local.get $2
+     i32.const 0
+     i32.gt_s
+     br_if $do-loop|0
+    end
+    global.get $~lib/rt/itcms/total
+    local.tee $2
+    local.get $2
+    global.get $~lib/rt/itcms/threshold
+    i32.sub
+    i32.const 1024
+    i32.lt_u
+    i32.const 10
+    i32.shl
+    i32.add
+    global.set $~lib/rt/itcms/threshold
+   end
+  end
+  global.get $~lib/rt/tlsf/ROOT
+  i32.eqz
+  if
+   call $~lib/rt/tlsf/initialize
+  end
+  global.get $~lib/rt/tlsf/ROOT
+  local.set $3
+  local.get $0
+  i32.const 16
+  i32.add
+  local.tee $2
+  i32.const 1073741820
+  i32.gt_u
+  if
+   i32.const 1056
+   i32.const 1392
+   i32.const 458
+   i32.const 29
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $3
+  local.get $2
+  i32.const 12
+  i32.le_u
+  if (result i32)
+   i32.const 12
+  else
+   local.get $2
+   i32.const 19
+   i32.add
+   i32.const -16
+   i32.and
+   i32.const 4
+   i32.sub
+  end
+  local.tee $5
+  call $~lib/rt/tlsf/searchBlock
+  local.tee $2
+  i32.eqz
+  if
+   memory.size
+   local.tee $2
+   local.get $5
+   i32.const 536870910
+   i32.lt_u
+   if (result i32)
+    i32.const 1
+    i32.const 27
+    local.get $5
+    i32.clz
+    i32.sub
+    i32.shl
+    i32.const 1
+    i32.sub
+    local.get $5
+    i32.add
+   else
+    local.get $5
+   end
+   i32.const 4
+   local.get $3
+   i32.load offset=1568
+   local.get $2
+   i32.const 16
+   i32.shl
+   i32.const 4
+   i32.sub
+   i32.ne
+   i32.shl
+   i32.add
+   i32.const 65535
+   i32.add
+   i32.const -65536
+   i32.and
+   i32.const 16
+   i32.shr_u
+   local.tee $4
+   local.get $2
+   local.get $4
+   i32.gt_s
+   select
+   memory.grow
+   i32.const 0
+   i32.lt_s
+   if
+    local.get $4
+    memory.grow
+    i32.const 0
+    i32.lt_s
+    if
+     unreachable
+    end
+   end
+   local.get $3
+   local.get $2
+   i32.const 16
+   i32.shl
+   memory.size
+   i32.const 16
+   i32.shl
+   call $~lib/rt/tlsf/addMemory
+   local.get $3
+   local.get $5
+   call $~lib/rt/tlsf/searchBlock
+   local.tee $2
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 1392
+    i32.const 496
+    i32.const 16
+    call $~lib/builtins/abort
+    unreachable
+   end
+  end
+  local.get $2
+  i32.load
+  i32.const -4
+  i32.and
+  local.get $5
+  i32.lt_u
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 498
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $3
+  local.get $2
+  call $~lib/rt/tlsf/removeBlock
+  local.get $2
+  i32.load
+  local.set $4
+  local.get $5
+  i32.const 4
+  i32.add
+  i32.const 15
+  i32.and
+  if
+   i32.const 0
+   i32.const 1392
+   i32.const 357
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $4
+  i32.const -4
+  i32.and
+  local.get $5
+  i32.sub
+  local.tee $6
+  i32.const 16
+  i32.ge_u
+  if
+   local.get $2
+   local.get $4
+   i32.const 2
+   i32.and
+   local.get $5
+   i32.or
+   i32.store
+   local.get $5
+   local.get $2
+   i32.const 4
+   i32.add
+   i32.add
+   local.tee $4
+   local.get $6
+   i32.const 4
+   i32.sub
+   i32.const 1
+   i32.or
+   i32.store
+   local.get $3
+   local.get $4
+   call $~lib/rt/tlsf/insertBlock
+  else
+   local.get $2
+   local.get $4
+   i32.const -2
+   i32.and
+   i32.store
+   local.get $2
+   i32.const 4
+   i32.add
+   local.get $2
+   i32.load
+   i32.const -4
+   i32.and
+   i32.add
+   local.tee $3
+   local.get $3
+   i32.load
+   i32.const -3
+   i32.and
+   i32.store
+  end
+  local.get $2
+  local.get $1
+  i32.store offset=12
+  local.get $2
+  local.get $0
+  i32.store offset=16
+  global.get $~lib/rt/itcms/fromSpace
+  local.tee $1
+  i32.load offset=8
+  local.set $3
+  local.get $2
+  global.get $~lib/rt/itcms/white
+  local.get $1
+  i32.or
+  i32.store offset=4
+  local.get $2
+  local.get $3
+  i32.store offset=8
+  local.get $3
+  local.get $3
+  i32.load offset=4
+  i32.const 3
+  i32.and
+  local.get $2
+  i32.or
+  i32.store offset=4
+  local.get $1
+  local.get $2
+  i32.store offset=8
+  global.get $~lib/rt/itcms/total
+  local.get $2
+  i32.load
+  i32.const -4
+  i32.and
+  i32.const 4
+  i32.add
+  i32.add
+  global.set $~lib/rt/itcms/total
+  local.get $2
+  i32.const 20
+  i32.add
+  local.tee $2
+  local.set $1
+  block $~lib/util/memory/memset|inlined.0
+   local.get $0
+   i32.eqz
+   br_if $~lib/util/memory/memset|inlined.0
+   local.get $1
+   i32.const 0
+   i32.store8
+   local.get $0
+   local.get $1
+   i32.add
+   local.tee $3
+   i32.const 1
+   i32.sub
+   i32.const 0
+   i32.store8
+   local.get $0
+   i32.const 2
+   i32.le_u
+   br_if $~lib/util/memory/memset|inlined.0
+   local.get $1
+   i32.const 0
+   i32.store8 offset=1
+   local.get $1
+   i32.const 0
+   i32.store8 offset=2
+   local.get $3
+   i32.const 2
+   i32.sub
+   i32.const 0
+   i32.store8
+   local.get $3
+   i32.const 3
+   i32.sub
+   i32.const 0
+   i32.store8
+   local.get $0
+   i32.const 6
+   i32.le_u
+   br_if $~lib/util/memory/memset|inlined.0
+   local.get $1
+   i32.const 0
+   i32.store8 offset=3
+   local.get $3
+   i32.const 4
+   i32.sub
+   i32.const 0
+   i32.store8
+   local.get $0
+   i32.const 8
+   i32.le_u
+   br_if $~lib/util/memory/memset|inlined.0
+   local.get $1
+   i32.const 0
+   local.get $1
+   i32.sub
+   i32.const 3
+   i32.and
+   local.tee $3
+   i32.add
+   local.tee $1
+   i32.const 0
+   i32.store
+   local.get $1
+   local.get $0
+   local.get $3
+   i32.sub
+   i32.const -4
+   i32.and
+   local.tee $0
+   i32.add
+   local.tee $3
+   i32.const 4
+   i32.sub
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 8
+   i32.le_u
+   br_if $~lib/util/memory/memset|inlined.0
+   local.get $1
+   i32.const 0
+   i32.store offset=4
+   local.get $1
+   i32.const 0
+   i32.store offset=8
+   local.get $3
+   i32.const 12
+   i32.sub
+   i32.const 0
+   i32.store
+   local.get $3
+   i32.const 8
+   i32.sub
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 24
+   i32.le_u
+   br_if $~lib/util/memory/memset|inlined.0
+   local.get $1
+   i32.const 0
+   i32.store offset=12
+   local.get $1
+   i32.const 0
+   i32.store offset=16
+   local.get $1
+   i32.const 0
+   i32.store offset=20
+   local.get $1
+   i32.const 0
+   i32.store offset=24
+   local.get $3
+   i32.const 28
+   i32.sub
+   i32.const 0
+   i32.store
+   local.get $3
+   i32.const 24
+   i32.sub
+   i32.const 0
+   i32.store
+   local.get $3
+   i32.const 20
+   i32.sub
+   i32.const 0
+   i32.store
+   local.get $3
+   i32.const 16
+   i32.sub
+   i32.const 0
+   i32.store
+   local.get $1
+   local.get $1
+   i32.const 4
+   i32.and
+   i32.const 24
+   i32.add
+   local.tee $3
+   i32.add
+   local.set $1
+   local.get $0
+   local.get $3
+   i32.sub
+   local.set $0
+   loop $while-continue|0
+    local.get $0
+    i32.const 32
+    i32.ge_u
+    if
+     local.get $1
+     i64.const 0
+     i64.store
+     local.get $1
+     i64.const 0
+     i64.store offset=8
+     local.get $1
+     i64.const 0
+     i64.store offset=16
+     local.get $1
+     i64.const 0
+     i64.store offset=24
+     local.get $0
+     i32.const 32
+     i32.sub
+     local.set $0
+     local.get $1
+     i32.const 32
+     i32.add
+     local.set $1
+     br $while-continue|0
+    end
+   end
+  end
+  local.get $2
+ )
+ (func $~lib/rt/itcms/__link (param $0 i32) (param $1 i32)
+  local.get $1
+  i32.eqz
+  if
+   return
+  end
+  local.get $0
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 1120
+   i32.const 294
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/rt/itcms/white
+  local.get $1
+  i32.const 20
+  i32.sub
+  local.tee $1
+  i32.load offset=4
+  i32.const 3
+  i32.and
+  i32.eq
+  if
+   local.get $0
+   i32.const 20
+   i32.sub
+   i32.load offset=4
+   i32.const 3
+   i32.and
+   local.tee $0
+   global.get $~lib/rt/itcms/white
+   i32.eqz
+   i32.eq
+   if
+    local.get $1
+    call $~lib/rt/itcms/Object#makeGray
+   else
+    global.get $~lib/rt/itcms/state
+    i32.const 1
+    i32.eq
+    i32.const 0
+    local.get $0
+    i32.const 3
+    i32.eq
+    select
+    if
+     local.get $1
+     call $~lib/rt/itcms/Object#makeGray
+    end
+   end
+  end
+ )
+ (func $~lib/rt/__visit_members (param $0 i32)
+  (local $1 i32)
+  block $folding-inner0
+   block $invalid
+    block $duplicate-fields/A3
+     block $duplicate-fields/B3
+      block $duplicate-fields/Bar
+       block $duplicate-fields/B2
+        block $duplicate-fields/Foo
+         block $duplicate-fields/B
+          block $duplicate-fields/A
+           block $~lib/string/String
+            block $~lib/arraybuffer/ArrayBuffer
+             local.get $0
+             i32.const 8
+             i32.sub
+             i32.load
+             br_table $~lib/arraybuffer/ArrayBuffer $~lib/string/String $folding-inner0 $duplicate-fields/A $duplicate-fields/B $folding-inner0 $duplicate-fields/Foo $duplicate-fields/B2 $duplicate-fields/Bar $duplicate-fields/B3 $duplicate-fields/A3 $invalid
+            end
+            return
+           end
+           return
+          end
+          return
+         end
+         return
+        end
+        return
+       end
+       local.get $0
+       i32.load
+       local.tee $1
+       if
+        local.get $1
+        call $~lib/rt/itcms/__visit
+       end
+       br $folding-inner0
+      end
+      return
+     end
+     return
+    end
+    return
+   end
+   unreachable
+  end
+  local.get $0
+  i32.load
+  local.tee $0
+  if
+   local.get $0
+   call $~lib/rt/itcms/__visit
+  end
+ )
+ (func $~start
+  (local $0 i32)
+  (local $1 i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  block $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   local.tee $0
+   i32.const 0
+   i32.store
+   memory.size
+   i32.const 16
+   i32.shl
+   i32.const 17980
+   i32.sub
+   i32.const 1
+   i32.shr_u
+   global.set $~lib/rt/itcms/threshold
+   i32.const 1172
+   i32.const 1168
+   i32.store
+   i32.const 1176
+   i32.const 1168
+   i32.store
+   i32.const 1168
+   global.set $~lib/rt/itcms/pinSpace
+   i32.const 1204
+   i32.const 1200
+   i32.store
+   i32.const 1208
+   i32.const 1200
+   i32.store
+   i32.const 1200
+   global.set $~lib/rt/itcms/toSpace
+   i32.const 1348
+   i32.const 1344
+   i32.store
+   i32.const 1352
+   i32.const 1344
+   i32.store
+   i32.const 1344
+   global.set $~lib/rt/itcms/fromSpace
+   local.get $0
+   i32.const 4
+   i32.sub
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   local.tee $0
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 4
+   i32.const 4
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+   local.get $0
+   i32.const 0
+   i32.store
+   global.get $~lib/memory/__stack_pointer
+   local.tee $1
+   i32.const 4
+   i32.sub
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.eqz
+   if
+    global.get $~lib/memory/__stack_pointer
+    i32.const 4
+    i32.const 3
+    call $~lib/rt/itcms/__new
+    local.tee $0
+    i32.store
+   end
+   local.get $0
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 10
+   i32.store
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   local.get $1
+   local.get $0
+   i32.store
+   local.get $0
+   i32.const 10
+   i32.store
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   local.get $0
+   global.set $duplicate-fields/foo
+   global.get $duplicate-fields/foo
+   i32.load
+   i32.const 10
+   i32.ne
+   if
+    i32.const 0
+    i32.const 1456
+    i32.const 15
+    i32.const 1
+    call $~lib/builtins/abort
+    unreachable
+   end
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.sub
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   local.tee $0
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 8
+   i32.const 8
+   call $~lib/rt/itcms/__new
+   local.tee $1
+   i32.store
+   local.get $1
+   i32.const 0
+   i32.store offset=4
+   global.get $~lib/memory/__stack_pointer
+   local.tee $0
+   i32.const 4
+   i32.sub
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   i32.const 0
+   i32.store
+   local.get $1
+   i32.eqz
+   if
+    global.get $~lib/memory/__stack_pointer
+    i32.const 4
+    i32.const 6
+    call $~lib/rt/itcms/__new
+    local.tee $1
+    i32.store
+   end
+   local.get $1
+   i32.const 0
+   i32.store
+   local.get $1
+   i32.const 1
+   i32.store
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   local.get $0
+   local.get $1
+   i32.store
+   local.get $1
+   i32.const 2
+   i32.store offset=4
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   local.get $1
+   i32.store
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.sub
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   local.tee $0
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 4
+   i32.const 7
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+   local.get $0
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 0
+   call $~lib/rt/itcms/__link
+   global.get $~lib/memory/__stack_pointer
+   local.tee $2
+   i32.const 4
+   i32.sub
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.eqz
+   if
+    global.get $~lib/memory/__stack_pointer
+    i32.const 4
+    i32.const 5
+    call $~lib/rt/itcms/__new
+    local.tee $0
+    i32.store
+   end
+   local.get $0
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 0
+   call $~lib/rt/itcms/__link
+   local.get $0
+   local.get $1
+   i32.store
+   local.get $0
+   local.get $1
+   call $~lib/rt/itcms/__link
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   local.get $2
+   local.get $0
+   i32.store
+   local.get $0
+   local.get $1
+   i32.store
+   local.get $0
+   local.get $1
+   call $~lib/rt/itcms/__link
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   local.get $0
+   global.set $duplicate-fields/raz
+   global.get $duplicate-fields/raz
+   i32.load
+   i32.load offset=4
+   i32.const 2
+   i32.ne
+   if
+    i32.const 0
+    i32.const 1456
+    i32.const 43
+    i32.const 1
+    call $~lib/builtins/abort
+    unreachable
+   end
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   return
+  end
+  i32.const 18000
+  i32.const 18048
+  i32.const 1
+  i32.const 1
+  call $~lib/builtins/abort
+  unreachable
+ )
+ (func $export:duplicate-fields/B3#get:protProt (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  global.get $~lib/memory/__stack_pointer
+  i32.const 1596
+  i32.lt_s
+  if
+   i32.const 18000
+   i32.const 18048
+   i32.const 1
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/memory/__stack_pointer
+  local.tee $1
+  local.get $0
+  i32.store
+  local.get $0
+  i32.load
+  local.get $1
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#set:protProt (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  global.get $~lib/memory/__stack_pointer
+  i32.const 1596
+  i32.lt_s
+  if
+   i32.const 18000
+   i32.const 18048
+   i32.const 1
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/memory/__stack_pointer
+  local.tee $2
+  local.get $0
+  i32.store
+  local.get $0
+  local.get $1
+  i32.store
+  local.get $2
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#get:protPub (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  global.get $~lib/memory/__stack_pointer
+  i32.const 1596
+  i32.lt_s
+  if
+   i32.const 18000
+   i32.const 18048
+   i32.const 1
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/memory/__stack_pointer
+  local.tee $1
+  local.get $0
+  i32.store
+  local.get $0
+  i32.load offset=4
+  local.get $1
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#set:protPub (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  global.get $~lib/memory/__stack_pointer
+  i32.const 1596
+  i32.lt_s
+  if
+   i32.const 18000
+   i32.const 18048
+   i32.const 1
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/memory/__stack_pointer
+  local.tee $2
+  local.get $0
+  i32.store
+  local.get $0
+  local.get $1
+  i32.store offset=4
+  local.get $2
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#get:pubPub (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  global.get $~lib/memory/__stack_pointer
+  i32.const 1596
+  i32.lt_s
+  if
+   i32.const 18000
+   i32.const 18048
+   i32.const 1
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/memory/__stack_pointer
+  local.tee $1
+  local.get $0
+  i32.store
+  local.get $0
+  i32.load offset=8
+  local.get $1
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#set:pubPub (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  global.get $~lib/memory/__stack_pointer
+  i32.const 1596
+  i32.lt_s
+  if
+   i32.const 18000
+   i32.const 18048
+   i32.const 1
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/memory/__stack_pointer
+  local.tee $2
+  local.get $0
+  i32.store
+  local.get $0
+  local.get $1
+  i32.store offset=8
+  local.get $2
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#constructor (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  block $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   local.tee $1
+   local.get $0
+   i32.store
+   local.get $1
+   i32.const 4
+   i32.sub
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.eqz
+   if
+    global.get $~lib/memory/__stack_pointer
+    i32.const 12
+    i32.const 9
+    call $~lib/rt/itcms/__new
+    local.tee $0
+    i32.store
+   end
+   global.get $~lib/memory/__stack_pointer
+   local.tee $1
+   i32.const 4
+   i32.sub
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 1596
+   i32.lt_s
+   br_if $folding-inner0
+   global.get $~lib/memory/__stack_pointer
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.eqz
+   if
+    global.get $~lib/memory/__stack_pointer
+    i32.const 12
+    i32.const 10
+    call $~lib/rt/itcms/__new
+    local.tee $0
+    i32.store
+   end
+   local.get $0
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 0
+   i32.store offset=4
+   local.get $0
+   i32.const 0
+   i32.store offset=8
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   local.get $1
+   local.get $0
+   i32.store
+   local.get $0
+   i32.const 0
+   i32.store
+   local.get $0
+   i32.const 0
+   i32.store offset=4
+   local.get $0
+   i32.const 0
+   i32.store offset=8
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.add
+   global.set $~lib/memory/__stack_pointer
+   local.get $0
+   return
+  end
+  i32.const 18000
+  i32.const 18048
+  i32.const 1
+  i32.const 1
+  call $~lib/builtins/abort
+  unreachable
+ )
+)
diff --git a/tests/compiler/duplicate-fields.ts b/tests/compiler/duplicate-fields.ts
new file mode 100644
index 0000000000..35e6d74f14
--- /dev/null
+++ b/tests/compiler/duplicate-fields.ts
@@ -0,0 +1,57 @@
+class A {
+  bar: i32;
+  constructor(bar: i32) { this.bar = bar; }
+}
+
+class B extends A {
+  bar: i32 = 0;
+  constructor(bar: i32) { super(bar); this.bar = bar; }
+}
+
+assert(offsetof<A>("bar") == 0);
+assert(offsetof<B>("bar") == 0);
+
+const foo = new B(10);
+assert(foo.bar == 10);
+
+// duplicate fields w/ narrowing
+
+class Foo {
+  foo: i32;
+  constructor(foo: i32) { this.foo = foo; }
+}
+
+class Bar extends Foo {
+  bar: i32;
+  constructor(foo: i32, bar: i32) { super(foo); this.bar = bar; }
+}
+
+class A2 {
+  bar: Foo;
+  constructor(bar: Foo) { this.bar = bar; }
+}
+
+class B2 extends A2 {
+  bar: Bar;
+  constructor(bar: Bar) { super(bar); this.bar = bar; }
+}
+
+assert(offsetof<A2>("bar") == 0);
+assert(offsetof<B2>("bar") == 0);
+
+const raz = new B2(new Bar(1, 2));
+assert(raz.bar.bar == 2);
+
+// make sure visibility checks allow these
+
+class A3 {
+  protected protProt: i32;
+  protected protPub: i32;
+  public pubPub: i32;
+}
+
+export class B3 extends A3 {
+  protected protProt: i32;
+  public protPub: i32;
+  public pubPub: i32;
+}
\ No newline at end of file
diff --git a/tests/compiler/duplicate-fields.untouched.wat b/tests/compiler/duplicate-fields.untouched.wat
new file mode 100644
index 0000000000..8bf32e91a4
--- /dev/null
+++ b/tests/compiler/duplicate-fields.untouched.wat
@@ -0,0 +1,3154 @@
+(module
+ (type $i32_i32_=>_none (func (param i32 i32)))
+ (type $i32_=>_i32 (func (param i32) (result i32)))
+ (type $i32_i32_=>_i32 (func (param i32 i32) (result i32)))
+ (type $i32_=>_none (func (param i32)))
+ (type $none_=>_none (func))
+ (type $i32_i32_i32_=>_none (func (param i32 i32 i32)))
+ (type $i32_i32_i32_=>_i32 (func (param i32 i32 i32) (result i32)))
+ (type $i32_i32_i32_i32_=>_none (func (param i32 i32 i32 i32)))
+ (type $none_=>_i32 (func (result i32)))
+ (import "env" "abort" (func $~lib/builtins/abort (param i32 i32 i32 i32)))
+ (global $~lib/rt/itcms/total (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/threshold (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/state (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/visitCount (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/pinSpace (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/iter (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/toSpace (mut i32) (i32.const 0))
+ (global $~lib/rt/itcms/white (mut i32) (i32.const 0))
+ (global $~lib/shared/runtime/Runtime.Stub i32 (i32.const 0))
+ (global $~lib/shared/runtime/Runtime.Minimal i32 (i32.const 1))
+ (global $~lib/shared/runtime/Runtime.Incremental i32 (i32.const 2))
+ (global $~lib/rt/itcms/fromSpace (mut i32) (i32.const 0))
+ (global $~lib/rt/tlsf/ROOT (mut i32) (i32.const 0))
+ (global $~lib/ASC_LOW_MEMORY_LIMIT i32 (i32.const 0))
+ (global $~lib/ASC_SHRINK_LEVEL i32 (i32.const 0))
+ (global $duplicate-fields/foo (mut i32) (i32.const 0))
+ (global $duplicate-fields/raz (mut i32) (i32.const 0))
+ (global $duplicate-fields/B3 i32 (i32.const 9))
+ (global $~lib/rt/__rtti_base i32 (i32.const 480))
+ (global $~lib/memory/__data_end i32 (i32.const 572))
+ (global $~lib/memory/__stack_pointer (mut i32) (i32.const 16956))
+ (global $~lib/memory/__heap_base i32 (i32.const 16956))
+ (memory $0 1)
+ (data (i32.const 12) "<\00\00\00\00\00\00\00\00\00\00\00\01\00\00\00(\00\00\00A\00l\00l\00o\00c\00a\00t\00i\00o\00n\00 \00t\00o\00o\00 \00l\00a\00r\00g\00e\00\00\00\00\00")
+ (data (i32.const 76) "<\00\00\00\00\00\00\00\00\00\00\00\01\00\00\00 \00\00\00~\00l\00i\00b\00/\00r\00t\00/\00i\00t\00c\00m\00s\00.\00t\00s\00\00\00\00\00\00\00\00\00\00\00\00\00")
+ (data (i32.const 144) "\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00")
+ (data (i32.const 176) "\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00")
+ (data (i32.const 204) "<\00\00\00\00\00\00\00\00\00\00\00\01\00\00\00$\00\00\00I\00n\00d\00e\00x\00 \00o\00u\00t\00 \00o\00f\00 \00r\00a\00n\00g\00e\00\00\00\00\00\00\00\00\00")
+ (data (i32.const 268) ",\00\00\00\00\00\00\00\00\00\00\00\01\00\00\00\14\00\00\00~\00l\00i\00b\00/\00r\00t\00.\00t\00s\00\00\00\00\00\00\00\00\00")
+ (data (i32.const 320) "\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00")
+ (data (i32.const 348) "<\00\00\00\00\00\00\00\00\00\00\00\01\00\00\00\1e\00\00\00~\00l\00i\00b\00/\00r\00t\00/\00t\00l\00s\00f\00.\00t\00s\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00")
+ (data (i32.const 412) "<\00\00\00\00\00\00\00\00\00\00\00\01\00\00\00&\00\00\00d\00u\00p\00l\00i\00c\00a\00t\00e\00-\00f\00i\00e\00l\00d\00s\00.\00t\00s\00\00\00\00\00\00\00")
+ (data (i32.const 480) "\0b\00\00\00 \00\00\00\00\00\00\00 \00\00\00\00\00\00\00\00\00\00\00\00\00\00\00 \00\00\00\00\00\00\00 \00\00\00\03\00\00\00\00\00\00\00\00\00\00\00 \00\00\00\00\00\00\00\00\00\00\00\05\00\00\00 \00\00\00\06\00\00\00 \00\00\00\n\00\00\00 \00\00\00\00\00\00\00")
+ (table $0 1 funcref)
+ (elem $0 (i32.const 1))
+ (export "B3" (global $duplicate-fields/B3))
+ (export "memory" (memory $0))
+ (export "B3#get:protProt" (func $export:duplicate-fields/B3#get:protProt))
+ (export "B3#set:protProt" (func $export:duplicate-fields/B3#set:protProt))
+ (export "B3#get:protPub" (func $export:duplicate-fields/B3#get:protPub))
+ (export "B3#set:protPub" (func $export:duplicate-fields/B3#set:protPub))
+ (export "B3#get:pubPub" (func $export:duplicate-fields/B3#get:pubPub))
+ (export "B3#set:pubPub" (func $export:duplicate-fields/B3#set:pubPub))
+ (export "B3#constructor" (func $export:duplicate-fields/B3#constructor))
+ (start $~start)
+ (func $duplicate-fields/A#set:bar (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+ )
+ (func $~lib/rt/itcms/Object#set:nextWithColor (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=4
+ )
+ (func $~lib/rt/itcms/Object#set:prev (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=8
+ )
+ (func $~lib/rt/itcms/initLazy (param $0 i32) (result i32)
+  local.get $0
+  local.get $0
+  call $~lib/rt/itcms/Object#set:nextWithColor
+  local.get $0
+  local.get $0
+  call $~lib/rt/itcms/Object#set:prev
+  local.get $0
+ )
+ (func $~lib/rt/itcms/Object#get:next (param $0 i32) (result i32)
+  local.get $0
+  i32.load offset=4
+  i32.const 3
+  i32.const -1
+  i32.xor
+  i32.and
+ )
+ (func $~lib/rt/itcms/Object#get:color (param $0 i32) (result i32)
+  local.get $0
+  i32.load offset=4
+  i32.const 3
+  i32.and
+ )
+ (func $~lib/rt/itcms/visitRoots (param $0 i32)
+  (local $1 i32)
+  (local $2 i32)
+  (local $3 i32)
+  local.get $0
+  call $~lib/rt/__visit_globals
+  global.get $~lib/rt/itcms/pinSpace
+  local.set $1
+  local.get $1
+  call $~lib/rt/itcms/Object#get:next
+  local.set $2
+  loop $while-continue|0
+   local.get $2
+   local.get $1
+   i32.ne
+   local.set $3
+   local.get $3
+   if
+    i32.const 1
+    drop
+    local.get $2
+    call $~lib/rt/itcms/Object#get:color
+    i32.const 3
+    i32.eq
+    i32.eqz
+    if
+     i32.const 0
+     i32.const 96
+     i32.const 159
+     i32.const 16
+     call $~lib/builtins/abort
+     unreachable
+    end
+    local.get $2
+    i32.const 20
+    i32.add
+    local.get $0
+    call $~lib/rt/__visit_members
+    local.get $2
+    call $~lib/rt/itcms/Object#get:next
+    local.set $2
+    br $while-continue|0
+   end
+  end
+ )
+ (func $~lib/rt/itcms/Object#set:color (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $0
+  i32.load offset=4
+  i32.const 3
+  i32.const -1
+  i32.xor
+  i32.and
+  local.get $1
+  i32.or
+  call $~lib/rt/itcms/Object#set:nextWithColor
+ )
+ (func $~lib/rt/itcms/Object#set:next (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  local.get $0
+  i32.load offset=4
+  i32.const 3
+  i32.and
+  i32.or
+  call $~lib/rt/itcms/Object#set:nextWithColor
+ )
+ (func $~lib/rt/itcms/Object#unlink (param $0 i32)
+  (local $1 i32)
+  (local $2 i32)
+  local.get $0
+  call $~lib/rt/itcms/Object#get:next
+  local.set $1
+  local.get $1
+  i32.const 0
+  i32.eq
+  if
+   i32.const 1
+   drop
+   local.get $0
+   i32.load offset=8
+   i32.const 0
+   i32.eq
+   if (result i32)
+    local.get $0
+    global.get $~lib/memory/__heap_base
+    i32.lt_u
+   else
+    i32.const 0
+   end
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 96
+    i32.const 127
+    i32.const 18
+    call $~lib/builtins/abort
+    unreachable
+   end
+   return
+  end
+  local.get $0
+  i32.load offset=8
+  local.set $2
+  i32.const 1
+  drop
+  local.get $2
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 96
+   i32.const 131
+   i32.const 16
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  local.get $2
+  call $~lib/rt/itcms/Object#set:prev
+  local.get $2
+  local.get $1
+  call $~lib/rt/itcms/Object#set:next
+ )
+ (func $~lib/rt/__typeinfo (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/rt/__rtti_base
+  local.set $1
+  local.get $0
+  local.get $1
+  i32.load
+  i32.gt_u
+  if
+   i32.const 224
+   i32.const 288
+   i32.const 22
+   i32.const 28
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.const 4
+  i32.add
+  local.get $0
+  i32.const 8
+  i32.mul
+  i32.add
+  i32.load
+ )
+ (func $~lib/rt/itcms/Object#get:isPointerfree (param $0 i32) (result i32)
+  (local $1 i32)
+  local.get $0
+  i32.load offset=12
+  local.set $1
+  local.get $1
+  i32.const 1
+  i32.le_u
+  if (result i32)
+   i32.const 1
+  else
+   local.get $1
+   call $~lib/rt/__typeinfo
+   i32.const 32
+   i32.and
+   i32.const 0
+   i32.ne
+  end
+ )
+ (func $~lib/rt/itcms/Object#linkTo (param $0 i32) (param $1 i32) (param $2 i32)
+  (local $3 i32)
+  local.get $1
+  i32.load offset=8
+  local.set $3
+  local.get $0
+  local.get $1
+  local.get $2
+  i32.or
+  call $~lib/rt/itcms/Object#set:nextWithColor
+  local.get $0
+  local.get $3
+  call $~lib/rt/itcms/Object#set:prev
+  local.get $3
+  local.get $0
+  call $~lib/rt/itcms/Object#set:next
+  local.get $1
+  local.get $0
+  call $~lib/rt/itcms/Object#set:prev
+ )
+ (func $~lib/rt/itcms/Object#makeGray (param $0 i32)
+  (local $1 i32)
+  local.get $0
+  global.get $~lib/rt/itcms/iter
+  i32.eq
+  if
+   local.get $0
+   i32.load offset=8
+   local.tee $1
+   i32.eqz
+   if (result i32)
+    i32.const 0
+    i32.const 96
+    i32.const 147
+    i32.const 30
+    call $~lib/builtins/abort
+    unreachable
+   else
+    local.get $1
+   end
+   global.set $~lib/rt/itcms/iter
+  end
+  local.get $0
+  call $~lib/rt/itcms/Object#unlink
+  local.get $0
+  global.get $~lib/rt/itcms/toSpace
+  local.get $0
+  call $~lib/rt/itcms/Object#get:isPointerfree
+  if (result i32)
+   global.get $~lib/rt/itcms/white
+   i32.eqz
+  else
+   i32.const 2
+  end
+  call $~lib/rt/itcms/Object#linkTo
+ )
+ (func $~lib/rt/itcms/__visit (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  local.get $0
+  i32.eqz
+  if
+   return
+  end
+  local.get $0
+  i32.const 20
+  i32.sub
+  local.set $2
+  i32.const 0
+  drop
+  local.get $2
+  call $~lib/rt/itcms/Object#get:color
+  global.get $~lib/rt/itcms/white
+  i32.eq
+  if
+   local.get $2
+   call $~lib/rt/itcms/Object#makeGray
+   global.get $~lib/rt/itcms/visitCount
+   i32.const 1
+   i32.add
+   global.set $~lib/rt/itcms/visitCount
+  end
+ )
+ (func $~lib/rt/itcms/visitStack (param $0 i32)
+  (local $1 i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  local.set $1
+  loop $while-continue|0
+   local.get $1
+   global.get $~lib/memory/__heap_base
+   i32.lt_u
+   local.set $2
+   local.get $2
+   if
+    local.get $1
+    i32.load
+    local.get $0
+    call $~lib/rt/itcms/__visit
+    local.get $1
+    i32.const 4
+    i32.add
+    local.set $1
+    br $while-continue|0
+   end
+  end
+ )
+ (func $~lib/rt/itcms/Object#get:size (param $0 i32) (result i32)
+  i32.const 4
+  local.get $0
+  i32.load
+  i32.const 3
+  i32.const -1
+  i32.xor
+  i32.and
+  i32.add
+ )
+ (func $~lib/rt/tlsf/Root#set:flMap (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+ )
+ (func $~lib/rt/common/BLOCK#set:mmInfo (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+ )
+ (func $~lib/rt/tlsf/Block#set:prev (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=4
+ )
+ (func $~lib/rt/tlsf/Block#set:next (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=8
+ )
+ (func $~lib/rt/tlsf/removeBlock (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (local $8 i32)
+  (local $9 i32)
+  (local $10 i32)
+  (local $11 i32)
+  local.get $1
+  i32.load
+  local.set $2
+  i32.const 1
+  drop
+  local.get $2
+  i32.const 1
+  i32.and
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 268
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $2
+  i32.const 3
+  i32.const -1
+  i32.xor
+  i32.and
+  local.set $3
+  i32.const 1
+  drop
+  local.get $3
+  i32.const 12
+  i32.ge_u
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 270
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $3
+  i32.const 256
+  i32.lt_u
+  if
+   i32.const 0
+   local.set $4
+   local.get $3
+   i32.const 4
+   i32.shr_u
+   local.set $5
+  else
+   local.get $3
+   local.tee $6
+   i32.const 1073741820
+   local.tee $7
+   local.get $6
+   local.get $7
+   i32.lt_u
+   select
+   local.set $6
+   i32.const 31
+   local.get $6
+   i32.clz
+   i32.sub
+   local.set $4
+   local.get $6
+   local.get $4
+   i32.const 4
+   i32.sub
+   i32.shr_u
+   i32.const 1
+   i32.const 4
+   i32.shl
+   i32.xor
+   local.set $5
+   local.get $4
+   i32.const 8
+   i32.const 1
+   i32.sub
+   i32.sub
+   local.set $4
+  end
+  i32.const 1
+  drop
+  local.get $4
+  i32.const 23
+  i32.lt_u
+  if (result i32)
+   local.get $5
+   i32.const 16
+   i32.lt_u
+  else
+   i32.const 0
+  end
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 284
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.load offset=4
+  local.set $8
+  local.get $1
+  i32.load offset=8
+  local.set $9
+  local.get $8
+  if
+   local.get $8
+   local.get $9
+   call $~lib/rt/tlsf/Block#set:next
+  end
+  local.get $9
+  if
+   local.get $9
+   local.get $8
+   call $~lib/rt/tlsf/Block#set:prev
+  end
+  local.get $1
+  local.get $0
+  local.set $10
+  local.get $4
+  local.set $6
+  local.get $5
+  local.set $7
+  local.get $10
+  local.get $6
+  i32.const 4
+  i32.shl
+  local.get $7
+  i32.add
+  i32.const 2
+  i32.shl
+  i32.add
+  i32.load offset=96
+  i32.eq
+  if
+   local.get $0
+   local.set $11
+   local.get $4
+   local.set $10
+   local.get $5
+   local.set $6
+   local.get $9
+   local.set $7
+   local.get $11
+   local.get $10
+   i32.const 4
+   i32.shl
+   local.get $6
+   i32.add
+   i32.const 2
+   i32.shl
+   i32.add
+   local.get $7
+   i32.store offset=96
+   local.get $9
+   i32.eqz
+   if
+    local.get $0
+    local.set $6
+    local.get $4
+    local.set $7
+    local.get $6
+    local.get $7
+    i32.const 2
+    i32.shl
+    i32.add
+    i32.load offset=4
+    local.set $6
+    local.get $0
+    local.set $7
+    local.get $4
+    local.set $11
+    local.get $6
+    i32.const 1
+    local.get $5
+    i32.shl
+    i32.const -1
+    i32.xor
+    i32.and
+    local.tee $6
+    local.set $10
+    local.get $7
+    local.get $11
+    i32.const 2
+    i32.shl
+    i32.add
+    local.get $10
+    i32.store offset=4
+    local.get $6
+    i32.eqz
+    if
+     local.get $0
+     local.get $0
+     i32.load
+     i32.const 1
+     local.get $4
+     i32.shl
+     i32.const -1
+     i32.xor
+     i32.and
+     call $~lib/rt/tlsf/Root#set:flMap
+    end
+   end
+  end
+ )
+ (func $~lib/rt/tlsf/insertBlock (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (local $8 i32)
+  (local $9 i32)
+  (local $10 i32)
+  (local $11 i32)
+  (local $12 i32)
+  (local $13 i32)
+  i32.const 1
+  drop
+  local.get $1
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 201
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.load
+  local.set $2
+  i32.const 1
+  drop
+  local.get $2
+  i32.const 1
+  i32.and
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 203
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  local.set $3
+  local.get $3
+  i32.const 4
+  i32.add
+  local.get $3
+  i32.load
+  i32.const 3
+  i32.const -1
+  i32.xor
+  i32.and
+  i32.add
+  local.set $4
+  local.get $4
+  i32.load
+  local.set $5
+  local.get $5
+  i32.const 1
+  i32.and
+  if
+   local.get $0
+   local.get $4
+   call $~lib/rt/tlsf/removeBlock
+   local.get $1
+   local.get $2
+   i32.const 4
+   i32.add
+   local.get $5
+   i32.const 3
+   i32.const -1
+   i32.xor
+   i32.and
+   i32.add
+   local.tee $2
+   call $~lib/rt/common/BLOCK#set:mmInfo
+   local.get $1
+   local.set $3
+   local.get $3
+   i32.const 4
+   i32.add
+   local.get $3
+   i32.load
+   i32.const 3
+   i32.const -1
+   i32.xor
+   i32.and
+   i32.add
+   local.set $4
+   local.get $4
+   i32.load
+   local.set $5
+  end
+  local.get $2
+  i32.const 2
+  i32.and
+  if
+   local.get $1
+   local.set $3
+   local.get $3
+   i32.const 4
+   i32.sub
+   i32.load
+   local.set $3
+   local.get $3
+   i32.load
+   local.set $6
+   i32.const 1
+   drop
+   local.get $6
+   i32.const 1
+   i32.and
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 368
+    i32.const 221
+    i32.const 16
+    call $~lib/builtins/abort
+    unreachable
+   end
+   local.get $0
+   local.get $3
+   call $~lib/rt/tlsf/removeBlock
+   local.get $3
+   local.set $1
+   local.get $1
+   local.get $6
+   i32.const 4
+   i32.add
+   local.get $2
+   i32.const 3
+   i32.const -1
+   i32.xor
+   i32.and
+   i32.add
+   local.tee $2
+   call $~lib/rt/common/BLOCK#set:mmInfo
+  end
+  local.get $4
+  local.get $5
+  i32.const 2
+  i32.or
+  call $~lib/rt/common/BLOCK#set:mmInfo
+  local.get $2
+  i32.const 3
+  i32.const -1
+  i32.xor
+  i32.and
+  local.set $7
+  i32.const 1
+  drop
+  local.get $7
+  i32.const 12
+  i32.ge_u
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 233
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  i32.const 1
+  drop
+  local.get $1
+  i32.const 4
+  i32.add
+  local.get $7
+  i32.add
+  local.get $4
+  i32.eq
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 234
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $4
+  i32.const 4
+  i32.sub
+  local.get $1
+  i32.store
+  local.get $7
+  i32.const 256
+  i32.lt_u
+  if
+   i32.const 0
+   local.set $8
+   local.get $7
+   i32.const 4
+   i32.shr_u
+   local.set $9
+  else
+   local.get $7
+   local.tee $3
+   i32.const 1073741820
+   local.tee $6
+   local.get $3
+   local.get $6
+   i32.lt_u
+   select
+   local.set $3
+   i32.const 31
+   local.get $3
+   i32.clz
+   i32.sub
+   local.set $8
+   local.get $3
+   local.get $8
+   i32.const 4
+   i32.sub
+   i32.shr_u
+   i32.const 1
+   i32.const 4
+   i32.shl
+   i32.xor
+   local.set $9
+   local.get $8
+   i32.const 8
+   i32.const 1
+   i32.sub
+   i32.sub
+   local.set $8
+  end
+  i32.const 1
+  drop
+  local.get $8
+  i32.const 23
+  i32.lt_u
+  if (result i32)
+   local.get $9
+   i32.const 16
+   i32.lt_u
+  else
+   i32.const 0
+  end
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 251
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $0
+  local.set $10
+  local.get $8
+  local.set $3
+  local.get $9
+  local.set $6
+  local.get $10
+  local.get $3
+  i32.const 4
+  i32.shl
+  local.get $6
+  i32.add
+  i32.const 2
+  i32.shl
+  i32.add
+  i32.load offset=96
+  local.set $11
+  local.get $1
+  i32.const 0
+  call $~lib/rt/tlsf/Block#set:prev
+  local.get $1
+  local.get $11
+  call $~lib/rt/tlsf/Block#set:next
+  local.get $11
+  if
+   local.get $11
+   local.get $1
+   call $~lib/rt/tlsf/Block#set:prev
+  end
+  local.get $0
+  local.set $12
+  local.get $8
+  local.set $10
+  local.get $9
+  local.set $3
+  local.get $1
+  local.set $6
+  local.get $12
+  local.get $10
+  i32.const 4
+  i32.shl
+  local.get $3
+  i32.add
+  i32.const 2
+  i32.shl
+  i32.add
+  local.get $6
+  i32.store offset=96
+  local.get $0
+  local.get $0
+  i32.load
+  i32.const 1
+  local.get $8
+  i32.shl
+  i32.or
+  call $~lib/rt/tlsf/Root#set:flMap
+  local.get $0
+  local.set $13
+  local.get $8
+  local.set $12
+  local.get $0
+  local.set $3
+  local.get $8
+  local.set $6
+  local.get $3
+  local.get $6
+  i32.const 2
+  i32.shl
+  i32.add
+  i32.load offset=4
+  i32.const 1
+  local.get $9
+  i32.shl
+  i32.or
+  local.set $10
+  local.get $13
+  local.get $12
+  i32.const 2
+  i32.shl
+  i32.add
+  local.get $10
+  i32.store offset=4
+ )
+ (func $~lib/rt/tlsf/addMemory (param $0 i32) (param $1 i32) (param $2 i32) (result i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (local $8 i32)
+  (local $9 i32)
+  i32.const 1
+  drop
+  local.get $1
+  local.get $2
+  i32.le_u
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 377
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.const 4
+  i32.add
+  i32.const 15
+  i32.add
+  i32.const 15
+  i32.const -1
+  i32.xor
+  i32.and
+  i32.const 4
+  i32.sub
+  local.set $1
+  local.get $2
+  i32.const 15
+  i32.const -1
+  i32.xor
+  i32.and
+  local.set $2
+  local.get $0
+  local.set $3
+  local.get $3
+  i32.load offset=1568
+  local.set $4
+  i32.const 0
+  local.set $5
+  local.get $4
+  if
+   i32.const 1
+   drop
+   local.get $1
+   local.get $4
+   i32.const 4
+   i32.add
+   i32.ge_u
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 368
+    i32.const 384
+    i32.const 16
+    call $~lib/builtins/abort
+    unreachable
+   end
+   local.get $1
+   i32.const 16
+   i32.sub
+   local.get $4
+   i32.eq
+   if
+    local.get $1
+    i32.const 16
+    i32.sub
+    local.set $1
+    local.get $4
+    i32.load
+    local.set $5
+   else
+    nop
+   end
+  else
+   i32.const 1
+   drop
+   local.get $1
+   local.get $0
+   i32.const 1572
+   i32.add
+   i32.ge_u
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 368
+    i32.const 397
+    i32.const 5
+    call $~lib/builtins/abort
+    unreachable
+   end
+  end
+  local.get $2
+  local.get $1
+  i32.sub
+  local.set $6
+  local.get $6
+  i32.const 4
+  i32.const 12
+  i32.add
+  i32.const 4
+  i32.add
+  i32.lt_u
+  if
+   i32.const 0
+   return
+  end
+  local.get $6
+  i32.const 2
+  i32.const 4
+  i32.mul
+  i32.sub
+  local.set $7
+  local.get $1
+  local.set $8
+  local.get $8
+  local.get $7
+  i32.const 1
+  i32.or
+  local.get $5
+  i32.const 2
+  i32.and
+  i32.or
+  call $~lib/rt/common/BLOCK#set:mmInfo
+  local.get $8
+  i32.const 0
+  call $~lib/rt/tlsf/Block#set:prev
+  local.get $8
+  i32.const 0
+  call $~lib/rt/tlsf/Block#set:next
+  local.get $1
+  i32.const 4
+  i32.add
+  local.get $7
+  i32.add
+  local.set $4
+  local.get $4
+  i32.const 0
+  i32.const 2
+  i32.or
+  call $~lib/rt/common/BLOCK#set:mmInfo
+  local.get $0
+  local.set $9
+  local.get $4
+  local.set $3
+  local.get $9
+  local.get $3
+  i32.store offset=1568
+  local.get $0
+  local.get $8
+  call $~lib/rt/tlsf/insertBlock
+  i32.const 1
+ )
+ (func $~lib/rt/tlsf/initialize
+  (local $0 i32)
+  (local $1 i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (local $8 i32)
+  (local $9 i32)
+  (local $10 i32)
+  (local $11 i32)
+  (local $12 i32)
+  i32.const 0
+  drop
+  global.get $~lib/memory/__heap_base
+  i32.const 15
+  i32.add
+  i32.const 15
+  i32.const -1
+  i32.xor
+  i32.and
+  local.set $0
+  memory.size
+  local.set $1
+  local.get $0
+  i32.const 1572
+  i32.add
+  i32.const 65535
+  i32.add
+  i32.const 65535
+  i32.const -1
+  i32.xor
+  i32.and
+  i32.const 16
+  i32.shr_u
+  local.set $2
+  local.get $2
+  local.get $1
+  i32.gt_s
+  if (result i32)
+   local.get $2
+   local.get $1
+   i32.sub
+   memory.grow
+   i32.const 0
+   i32.lt_s
+  else
+   i32.const 0
+  end
+  if
+   unreachable
+  end
+  local.get $0
+  local.set $3
+  local.get $3
+  i32.const 0
+  call $~lib/rt/tlsf/Root#set:flMap
+  local.get $3
+  local.set $5
+  i32.const 0
+  local.set $4
+  local.get $5
+  local.get $4
+  i32.store offset=1568
+  i32.const 0
+  local.set $5
+  loop $for-loop|0
+   local.get $5
+   i32.const 23
+   i32.lt_u
+   local.set $4
+   local.get $4
+   if
+    local.get $3
+    local.set $8
+    local.get $5
+    local.set $7
+    i32.const 0
+    local.set $6
+    local.get $8
+    local.get $7
+    i32.const 2
+    i32.shl
+    i32.add
+    local.get $6
+    i32.store offset=4
+    i32.const 0
+    local.set $8
+    loop $for-loop|1
+     local.get $8
+     i32.const 16
+     i32.lt_u
+     local.set $7
+     local.get $7
+     if
+      local.get $3
+      local.set $11
+      local.get $5
+      local.set $10
+      local.get $8
+      local.set $9
+      i32.const 0
+      local.set $6
+      local.get $11
+      local.get $10
+      i32.const 4
+      i32.shl
+      local.get $9
+      i32.add
+      i32.const 2
+      i32.shl
+      i32.add
+      local.get $6
+      i32.store offset=96
+      local.get $8
+      i32.const 1
+      i32.add
+      local.set $8
+      br $for-loop|1
+     end
+    end
+    local.get $5
+    i32.const 1
+    i32.add
+    local.set $5
+    br $for-loop|0
+   end
+  end
+  local.get $0
+  i32.const 1572
+  i32.add
+  local.set $12
+  i32.const 0
+  drop
+  local.get $3
+  local.get $12
+  memory.size
+  i32.const 16
+  i32.shl
+  call $~lib/rt/tlsf/addMemory
+  drop
+  local.get $3
+  global.set $~lib/rt/tlsf/ROOT
+ )
+ (func $~lib/rt/tlsf/checkUsedBlock (param $0 i32) (result i32)
+  (local $1 i32)
+  local.get $0
+  i32.const 4
+  i32.sub
+  local.set $1
+  local.get $0
+  i32.const 0
+  i32.ne
+  if (result i32)
+   local.get $0
+   i32.const 15
+   i32.and
+   i32.eqz
+  else
+   i32.const 0
+  end
+  if (result i32)
+   local.get $1
+   i32.load
+   i32.const 1
+   i32.and
+   i32.eqz
+  else
+   i32.const 0
+  end
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 559
+   i32.const 3
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+ )
+ (func $~lib/rt/tlsf/freeBlock (param $0 i32) (param $1 i32)
+  i32.const 0
+  drop
+  local.get $1
+  local.get $1
+  i32.load
+  i32.const 1
+  i32.or
+  call $~lib/rt/common/BLOCK#set:mmInfo
+  local.get $0
+  local.get $1
+  call $~lib/rt/tlsf/insertBlock
+ )
+ (func $~lib/rt/tlsf/__free (param $0 i32)
+  local.get $0
+  global.get $~lib/memory/__heap_base
+  i32.lt_u
+  if
+   return
+  end
+  global.get $~lib/rt/tlsf/ROOT
+  i32.eqz
+  if
+   call $~lib/rt/tlsf/initialize
+  end
+  global.get $~lib/rt/tlsf/ROOT
+  local.get $0
+  call $~lib/rt/tlsf/checkUsedBlock
+  call $~lib/rt/tlsf/freeBlock
+ )
+ (func $~lib/rt/itcms/free (param $0 i32)
+  local.get $0
+  global.get $~lib/memory/__heap_base
+  i32.lt_u
+  if
+   local.get $0
+   i32.const 0
+   call $~lib/rt/itcms/Object#set:nextWithColor
+   local.get $0
+   i32.const 0
+   call $~lib/rt/itcms/Object#set:prev
+  else
+   global.get $~lib/rt/itcms/total
+   local.get $0
+   call $~lib/rt/itcms/Object#get:size
+   i32.sub
+   global.set $~lib/rt/itcms/total
+   i32.const 0
+   drop
+   local.get $0
+   i32.const 4
+   i32.add
+   call $~lib/rt/tlsf/__free
+  end
+ )
+ (func $~lib/rt/itcms/step (result i32)
+  (local $0 i32)
+  (local $1 i32)
+  (local $2 i32)
+  block $break|0
+   block $case2|0
+    block $case1|0
+     block $case0|0
+      global.get $~lib/rt/itcms/state
+      local.set $1
+      local.get $1
+      i32.const 0
+      i32.eq
+      br_if $case0|0
+      local.get $1
+      i32.const 1
+      i32.eq
+      br_if $case1|0
+      local.get $1
+      i32.const 2
+      i32.eq
+      br_if $case2|0
+      br $break|0
+     end
+     i32.const 1
+     global.set $~lib/rt/itcms/state
+     i32.const 0
+     global.set $~lib/rt/itcms/visitCount
+     i32.const 0
+     call $~lib/rt/itcms/visitRoots
+     global.get $~lib/rt/itcms/toSpace
+     global.set $~lib/rt/itcms/iter
+     global.get $~lib/rt/itcms/visitCount
+     i32.const 1
+     i32.mul
+     return
+    end
+    global.get $~lib/rt/itcms/white
+    i32.eqz
+    local.set $1
+    global.get $~lib/rt/itcms/iter
+    call $~lib/rt/itcms/Object#get:next
+    local.set $0
+    loop $while-continue|1
+     local.get $0
+     global.get $~lib/rt/itcms/toSpace
+     i32.ne
+     local.set $2
+     local.get $2
+     if
+      local.get $0
+      global.set $~lib/rt/itcms/iter
+      local.get $0
+      call $~lib/rt/itcms/Object#get:color
+      local.get $1
+      i32.ne
+      if
+       local.get $0
+       local.get $1
+       call $~lib/rt/itcms/Object#set:color
+       i32.const 0
+       global.set $~lib/rt/itcms/visitCount
+       local.get $0
+       i32.const 20
+       i32.add
+       i32.const 0
+       call $~lib/rt/__visit_members
+       global.get $~lib/rt/itcms/visitCount
+       i32.const 1
+       i32.mul
+       return
+      end
+      local.get $0
+      call $~lib/rt/itcms/Object#get:next
+      local.set $0
+      br $while-continue|1
+     end
+    end
+    i32.const 0
+    global.set $~lib/rt/itcms/visitCount
+    i32.const 0
+    call $~lib/rt/itcms/visitRoots
+    global.get $~lib/rt/itcms/iter
+    call $~lib/rt/itcms/Object#get:next
+    local.set $0
+    local.get $0
+    global.get $~lib/rt/itcms/toSpace
+    i32.eq
+    if
+     i32.const 0
+     call $~lib/rt/itcms/visitStack
+     global.get $~lib/rt/itcms/iter
+     call $~lib/rt/itcms/Object#get:next
+     local.set $0
+     loop $while-continue|2
+      local.get $0
+      global.get $~lib/rt/itcms/toSpace
+      i32.ne
+      local.set $2
+      local.get $2
+      if
+       local.get $0
+       call $~lib/rt/itcms/Object#get:color
+       local.get $1
+       i32.ne
+       if
+        local.get $0
+        local.get $1
+        call $~lib/rt/itcms/Object#set:color
+        local.get $0
+        i32.const 20
+        i32.add
+        i32.const 0
+        call $~lib/rt/__visit_members
+       end
+       local.get $0
+       call $~lib/rt/itcms/Object#get:next
+       local.set $0
+       br $while-continue|2
+      end
+     end
+     global.get $~lib/rt/itcms/fromSpace
+     local.set $2
+     global.get $~lib/rt/itcms/toSpace
+     global.set $~lib/rt/itcms/fromSpace
+     local.get $2
+     global.set $~lib/rt/itcms/toSpace
+     local.get $1
+     global.set $~lib/rt/itcms/white
+     local.get $2
+     call $~lib/rt/itcms/Object#get:next
+     global.set $~lib/rt/itcms/iter
+     i32.const 2
+     global.set $~lib/rt/itcms/state
+    end
+    global.get $~lib/rt/itcms/visitCount
+    i32.const 1
+    i32.mul
+    return
+   end
+   global.get $~lib/rt/itcms/iter
+   local.set $0
+   local.get $0
+   global.get $~lib/rt/itcms/toSpace
+   i32.ne
+   if
+    local.get $0
+    call $~lib/rt/itcms/Object#get:next
+    global.set $~lib/rt/itcms/iter
+    i32.const 1
+    drop
+    local.get $0
+    call $~lib/rt/itcms/Object#get:color
+    global.get $~lib/rt/itcms/white
+    i32.eqz
+    i32.eq
+    i32.eqz
+    if
+     i32.const 0
+     i32.const 96
+     i32.const 228
+     i32.const 20
+     call $~lib/builtins/abort
+     unreachable
+    end
+    local.get $0
+    call $~lib/rt/itcms/free
+    i32.const 10
+    return
+   end
+   global.get $~lib/rt/itcms/toSpace
+   global.get $~lib/rt/itcms/toSpace
+   call $~lib/rt/itcms/Object#set:nextWithColor
+   global.get $~lib/rt/itcms/toSpace
+   global.get $~lib/rt/itcms/toSpace
+   call $~lib/rt/itcms/Object#set:prev
+   i32.const 0
+   global.set $~lib/rt/itcms/state
+   br $break|0
+  end
+  i32.const 0
+ )
+ (func $~lib/rt/itcms/interrupt
+  (local $0 i32)
+  i32.const 0
+  drop
+  i32.const 0
+  drop
+  i32.const 1024
+  i32.const 200
+  i32.mul
+  i32.const 100
+  i32.div_u
+  local.set $0
+  loop $do-loop|0
+   local.get $0
+   call $~lib/rt/itcms/step
+   i32.sub
+   local.set $0
+   global.get $~lib/rt/itcms/state
+   i32.const 0
+   i32.eq
+   if
+    i32.const 0
+    drop
+    global.get $~lib/rt/itcms/total
+    i64.extend_i32_u
+    i32.const 200
+    i64.extend_i32_u
+    i64.mul
+    i64.const 100
+    i64.div_u
+    i32.wrap_i64
+    i32.const 1024
+    i32.add
+    global.set $~lib/rt/itcms/threshold
+    i32.const 0
+    drop
+    return
+   end
+   local.get $0
+   i32.const 0
+   i32.gt_s
+   br_if $do-loop|0
+  end
+  i32.const 0
+  drop
+  global.get $~lib/rt/itcms/total
+  i32.const 1024
+  global.get $~lib/rt/itcms/total
+  global.get $~lib/rt/itcms/threshold
+  i32.sub
+  i32.const 1024
+  i32.lt_u
+  i32.mul
+  i32.add
+  global.set $~lib/rt/itcms/threshold
+  i32.const 0
+  drop
+ )
+ (func $~lib/rt/tlsf/computeSize (param $0 i32) (result i32)
+  local.get $0
+  i32.const 12
+  i32.le_u
+  if (result i32)
+   i32.const 12
+  else
+   local.get $0
+   i32.const 4
+   i32.add
+   i32.const 15
+   i32.add
+   i32.const 15
+   i32.const -1
+   i32.xor
+   i32.and
+   i32.const 4
+   i32.sub
+  end
+ )
+ (func $~lib/rt/tlsf/prepareSize (param $0 i32) (result i32)
+  local.get $0
+  i32.const 1073741820
+  i32.gt_u
+  if
+   i32.const 32
+   i32.const 368
+   i32.const 458
+   i32.const 29
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $0
+  call $~lib/rt/tlsf/computeSize
+ )
+ (func $~lib/rt/tlsf/searchBlock (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (local $8 i32)
+  (local $9 i32)
+  local.get $1
+  i32.const 256
+  i32.lt_u
+  if
+   i32.const 0
+   local.set $2
+   local.get $1
+   i32.const 4
+   i32.shr_u
+   local.set $3
+  else
+   local.get $1
+   i32.const 536870910
+   i32.lt_u
+   if (result i32)
+    local.get $1
+    i32.const 1
+    i32.const 27
+    local.get $1
+    i32.clz
+    i32.sub
+    i32.shl
+    i32.add
+    i32.const 1
+    i32.sub
+   else
+    local.get $1
+   end
+   local.set $4
+   i32.const 31
+   local.get $4
+   i32.clz
+   i32.sub
+   local.set $2
+   local.get $4
+   local.get $2
+   i32.const 4
+   i32.sub
+   i32.shr_u
+   i32.const 1
+   i32.const 4
+   i32.shl
+   i32.xor
+   local.set $3
+   local.get $2
+   i32.const 8
+   i32.const 1
+   i32.sub
+   i32.sub
+   local.set $2
+  end
+  i32.const 1
+  drop
+  local.get $2
+  i32.const 23
+  i32.lt_u
+  if (result i32)
+   local.get $3
+   i32.const 16
+   i32.lt_u
+  else
+   i32.const 0
+  end
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 330
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $0
+  local.set $5
+  local.get $2
+  local.set $4
+  local.get $5
+  local.get $4
+  i32.const 2
+  i32.shl
+  i32.add
+  i32.load offset=4
+  i32.const 0
+  i32.const -1
+  i32.xor
+  local.get $3
+  i32.shl
+  i32.and
+  local.set $6
+  i32.const 0
+  local.set $7
+  local.get $6
+  i32.eqz
+  if
+   local.get $0
+   i32.load
+   i32.const 0
+   i32.const -1
+   i32.xor
+   local.get $2
+   i32.const 1
+   i32.add
+   i32.shl
+   i32.and
+   local.set $5
+   local.get $5
+   i32.eqz
+   if
+    i32.const 0
+    local.set $7
+   else
+    local.get $5
+    i32.ctz
+    local.set $2
+    local.get $0
+    local.set $8
+    local.get $2
+    local.set $4
+    local.get $8
+    local.get $4
+    i32.const 2
+    i32.shl
+    i32.add
+    i32.load offset=4
+    local.set $6
+    i32.const 1
+    drop
+    local.get $6
+    i32.eqz
+    if
+     i32.const 0
+     i32.const 368
+     i32.const 343
+     i32.const 18
+     call $~lib/builtins/abort
+     unreachable
+    end
+    local.get $0
+    local.set $9
+    local.get $2
+    local.set $8
+    local.get $6
+    i32.ctz
+    local.set $4
+    local.get $9
+    local.get $8
+    i32.const 4
+    i32.shl
+    local.get $4
+    i32.add
+    i32.const 2
+    i32.shl
+    i32.add
+    i32.load offset=96
+    local.set $7
+   end
+  else
+   local.get $0
+   local.set $9
+   local.get $2
+   local.set $8
+   local.get $6
+   i32.ctz
+   local.set $4
+   local.get $9
+   local.get $8
+   i32.const 4
+   i32.shl
+   local.get $4
+   i32.add
+   i32.const 2
+   i32.shl
+   i32.add
+   i32.load offset=96
+   local.set $7
+  end
+  local.get $7
+ )
+ (func $~lib/rt/tlsf/growMemory (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  i32.const 0
+  drop
+  local.get $1
+  i32.const 536870910
+  i32.lt_u
+  if
+   local.get $1
+   i32.const 1
+   i32.const 27
+   local.get $1
+   i32.clz
+   i32.sub
+   i32.shl
+   i32.const 1
+   i32.sub
+   i32.add
+   local.set $1
+  end
+  memory.size
+  local.set $2
+  local.get $1
+  i32.const 4
+  local.get $2
+  i32.const 16
+  i32.shl
+  i32.const 4
+  i32.sub
+  local.get $0
+  local.set $3
+  local.get $3
+  i32.load offset=1568
+  i32.ne
+  i32.shl
+  i32.add
+  local.set $1
+  local.get $1
+  i32.const 65535
+  i32.add
+  i32.const 65535
+  i32.const -1
+  i32.xor
+  i32.and
+  i32.const 16
+  i32.shr_u
+  local.set $4
+  local.get $2
+  local.tee $3
+  local.get $4
+  local.tee $5
+  local.get $3
+  local.get $5
+  i32.gt_s
+  select
+  local.set $6
+  local.get $6
+  memory.grow
+  i32.const 0
+  i32.lt_s
+  if
+   local.get $4
+   memory.grow
+   i32.const 0
+   i32.lt_s
+   if
+    unreachable
+   end
+  end
+  memory.size
+  local.set $7
+  local.get $0
+  local.get $2
+  i32.const 16
+  i32.shl
+  local.get $7
+  i32.const 16
+  i32.shl
+  call $~lib/rt/tlsf/addMemory
+  drop
+ )
+ (func $~lib/rt/tlsf/prepareBlock (param $0 i32) (param $1 i32) (param $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  local.get $1
+  i32.load
+  local.set $3
+  i32.const 1
+  drop
+  local.get $2
+  i32.const 4
+  i32.add
+  i32.const 15
+  i32.and
+  i32.eqz
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 357
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $3
+  i32.const 3
+  i32.const -1
+  i32.xor
+  i32.and
+  local.get $2
+  i32.sub
+  local.set $4
+  local.get $4
+  i32.const 4
+  i32.const 12
+  i32.add
+  i32.ge_u
+  if
+   local.get $1
+   local.get $2
+   local.get $3
+   i32.const 2
+   i32.and
+   i32.or
+   call $~lib/rt/common/BLOCK#set:mmInfo
+   local.get $1
+   i32.const 4
+   i32.add
+   local.get $2
+   i32.add
+   local.set $5
+   local.get $5
+   local.get $4
+   i32.const 4
+   i32.sub
+   i32.const 1
+   i32.or
+   call $~lib/rt/common/BLOCK#set:mmInfo
+   local.get $0
+   local.get $5
+   call $~lib/rt/tlsf/insertBlock
+  else
+   local.get $1
+   local.get $3
+   i32.const 1
+   i32.const -1
+   i32.xor
+   i32.and
+   call $~lib/rt/common/BLOCK#set:mmInfo
+   local.get $1
+   local.set $5
+   local.get $5
+   i32.const 4
+   i32.add
+   local.get $5
+   i32.load
+   i32.const 3
+   i32.const -1
+   i32.xor
+   i32.and
+   i32.add
+   local.get $1
+   local.set $5
+   local.get $5
+   i32.const 4
+   i32.add
+   local.get $5
+   i32.load
+   i32.const 3
+   i32.const -1
+   i32.xor
+   i32.and
+   i32.add
+   i32.load
+   i32.const 2
+   i32.const -1
+   i32.xor
+   i32.and
+   call $~lib/rt/common/BLOCK#set:mmInfo
+  end
+ )
+ (func $~lib/rt/tlsf/allocateBlock (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  local.get $1
+  call $~lib/rt/tlsf/prepareSize
+  local.set $2
+  local.get $0
+  local.get $2
+  call $~lib/rt/tlsf/searchBlock
+  local.set $3
+  local.get $3
+  i32.eqz
+  if
+   local.get $0
+   local.get $2
+   call $~lib/rt/tlsf/growMemory
+   local.get $0
+   local.get $2
+   call $~lib/rt/tlsf/searchBlock
+   local.set $3
+   i32.const 1
+   drop
+   local.get $3
+   i32.eqz
+   if
+    i32.const 0
+    i32.const 368
+    i32.const 496
+    i32.const 16
+    call $~lib/builtins/abort
+    unreachable
+   end
+  end
+  i32.const 1
+  drop
+  local.get $3
+  i32.load
+  i32.const 3
+  i32.const -1
+  i32.xor
+  i32.and
+  local.get $2
+  i32.ge_u
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 368
+   i32.const 498
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $0
+  local.get $3
+  call $~lib/rt/tlsf/removeBlock
+  local.get $0
+  local.get $3
+  local.get $2
+  call $~lib/rt/tlsf/prepareBlock
+  i32.const 0
+  drop
+  local.get $3
+ )
+ (func $~lib/rt/tlsf/__alloc (param $0 i32) (result i32)
+  global.get $~lib/rt/tlsf/ROOT
+  i32.eqz
+  if
+   call $~lib/rt/tlsf/initialize
+  end
+  global.get $~lib/rt/tlsf/ROOT
+  local.get $0
+  call $~lib/rt/tlsf/allocateBlock
+  i32.const 4
+  i32.add
+ )
+ (func $~lib/rt/itcms/Object#set:rtId (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=12
+ )
+ (func $~lib/rt/itcms/Object#set:rtSize (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=16
+ )
+ (func $~lib/memory/memory.fill (param $0 i32) (param $1 i32) (param $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (local $8 i32)
+  (local $9 i64)
+  (local $10 i32)
+  block $~lib/util/memory/memset|inlined.0
+   local.get $0
+   local.set $5
+   local.get $1
+   local.set $4
+   local.get $2
+   local.set $3
+   i32.const 0
+   i32.const 1
+   i32.gt_s
+   drop
+   local.get $3
+   i32.eqz
+   if
+    br $~lib/util/memory/memset|inlined.0
+   end
+   local.get $5
+   local.get $3
+   i32.add
+   local.set $6
+   local.get $5
+   local.get $4
+   i32.store8
+   local.get $6
+   i32.const 1
+   i32.sub
+   local.get $4
+   i32.store8
+   local.get $3
+   i32.const 2
+   i32.le_u
+   if
+    br $~lib/util/memory/memset|inlined.0
+   end
+   local.get $5
+   local.get $4
+   i32.store8 offset=1
+   local.get $5
+   local.get $4
+   i32.store8 offset=2
+   local.get $6
+   i32.const 2
+   i32.sub
+   local.get $4
+   i32.store8
+   local.get $6
+   i32.const 3
+   i32.sub
+   local.get $4
+   i32.store8
+   local.get $3
+   i32.const 6
+   i32.le_u
+   if
+    br $~lib/util/memory/memset|inlined.0
+   end
+   local.get $5
+   local.get $4
+   i32.store8 offset=3
+   local.get $6
+   i32.const 4
+   i32.sub
+   local.get $4
+   i32.store8
+   local.get $3
+   i32.const 8
+   i32.le_u
+   if
+    br $~lib/util/memory/memset|inlined.0
+   end
+   i32.const 0
+   local.get $5
+   i32.sub
+   i32.const 3
+   i32.and
+   local.set $7
+   local.get $5
+   local.get $7
+   i32.add
+   local.set $5
+   local.get $3
+   local.get $7
+   i32.sub
+   local.set $3
+   local.get $3
+   i32.const -4
+   i32.and
+   local.set $3
+   i32.const -1
+   i32.const 255
+   i32.div_u
+   local.get $4
+   i32.const 255
+   i32.and
+   i32.mul
+   local.set $8
+   local.get $5
+   local.get $3
+   i32.add
+   local.set $6
+   local.get $5
+   local.get $8
+   i32.store
+   local.get $6
+   i32.const 4
+   i32.sub
+   local.get $8
+   i32.store
+   local.get $3
+   i32.const 8
+   i32.le_u
+   if
+    br $~lib/util/memory/memset|inlined.0
+   end
+   local.get $5
+   local.get $8
+   i32.store offset=4
+   local.get $5
+   local.get $8
+   i32.store offset=8
+   local.get $6
+   i32.const 12
+   i32.sub
+   local.get $8
+   i32.store
+   local.get $6
+   i32.const 8
+   i32.sub
+   local.get $8
+   i32.store
+   local.get $3
+   i32.const 24
+   i32.le_u
+   if
+    br $~lib/util/memory/memset|inlined.0
+   end
+   local.get $5
+   local.get $8
+   i32.store offset=12
+   local.get $5
+   local.get $8
+   i32.store offset=16
+   local.get $5
+   local.get $8
+   i32.store offset=20
+   local.get $5
+   local.get $8
+   i32.store offset=24
+   local.get $6
+   i32.const 28
+   i32.sub
+   local.get $8
+   i32.store
+   local.get $6
+   i32.const 24
+   i32.sub
+   local.get $8
+   i32.store
+   local.get $6
+   i32.const 20
+   i32.sub
+   local.get $8
+   i32.store
+   local.get $6
+   i32.const 16
+   i32.sub
+   local.get $8
+   i32.store
+   i32.const 24
+   local.get $5
+   i32.const 4
+   i32.and
+   i32.add
+   local.set $7
+   local.get $5
+   local.get $7
+   i32.add
+   local.set $5
+   local.get $3
+   local.get $7
+   i32.sub
+   local.set $3
+   local.get $8
+   i64.extend_i32_u
+   local.get $8
+   i64.extend_i32_u
+   i64.const 32
+   i64.shl
+   i64.or
+   local.set $9
+   loop $while-continue|0
+    local.get $3
+    i32.const 32
+    i32.ge_u
+    local.set $10
+    local.get $10
+    if
+     local.get $5
+     local.get $9
+     i64.store
+     local.get $5
+     local.get $9
+     i64.store offset=8
+     local.get $5
+     local.get $9
+     i64.store offset=16
+     local.get $5
+     local.get $9
+     i64.store offset=24
+     local.get $3
+     i32.const 32
+     i32.sub
+     local.set $3
+     local.get $5
+     i32.const 32
+     i32.add
+     local.set $5
+     br $while-continue|0
+    end
+   end
+  end
+ )
+ (func $~lib/rt/itcms/__new (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  local.get $0
+  i32.const 1073741804
+  i32.ge_u
+  if
+   i32.const 32
+   i32.const 96
+   i32.const 260
+   i32.const 31
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/rt/itcms/total
+  global.get $~lib/rt/itcms/threshold
+  i32.ge_u
+  if
+   call $~lib/rt/itcms/interrupt
+  end
+  i32.const 16
+  local.get $0
+  i32.add
+  call $~lib/rt/tlsf/__alloc
+  i32.const 4
+  i32.sub
+  local.set $2
+  local.get $2
+  local.get $1
+  call $~lib/rt/itcms/Object#set:rtId
+  local.get $2
+  local.get $0
+  call $~lib/rt/itcms/Object#set:rtSize
+  local.get $2
+  global.get $~lib/rt/itcms/fromSpace
+  global.get $~lib/rt/itcms/white
+  call $~lib/rt/itcms/Object#linkTo
+  global.get $~lib/rt/itcms/total
+  local.get $2
+  call $~lib/rt/itcms/Object#get:size
+  i32.add
+  global.set $~lib/rt/itcms/total
+  local.get $2
+  i32.const 20
+  i32.add
+  local.set $3
+  local.get $3
+  i32.const 0
+  local.get $0
+  call $~lib/memory/memory.fill
+  local.get $3
+ )
+ (func $duplicate-fields/B#set:bar (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+ )
+ (func $~lib/rt/itcms/__link (param $0 i32) (param $1 i32) (param $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  local.get $1
+  i32.eqz
+  if
+   return
+  end
+  i32.const 1
+  drop
+  local.get $0
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 96
+   i32.const 294
+   i32.const 14
+   call $~lib/builtins/abort
+   unreachable
+  end
+  local.get $1
+  i32.const 20
+  i32.sub
+  local.set $3
+  local.get $3
+  call $~lib/rt/itcms/Object#get:color
+  global.get $~lib/rt/itcms/white
+  i32.eq
+  if
+   local.get $0
+   i32.const 20
+   i32.sub
+   local.set $4
+   local.get $4
+   call $~lib/rt/itcms/Object#get:color
+   local.set $5
+   local.get $5
+   global.get $~lib/rt/itcms/white
+   i32.eqz
+   i32.eq
+   if
+    local.get $2
+    if
+     local.get $4
+     call $~lib/rt/itcms/Object#makeGray
+    else
+     local.get $3
+     call $~lib/rt/itcms/Object#makeGray
+    end
+   else
+    local.get $5
+    i32.const 3
+    i32.eq
+    if (result i32)
+     global.get $~lib/rt/itcms/state
+     i32.const 1
+     i32.eq
+    else
+     i32.const 0
+    end
+    if
+     local.get $3
+     call $~lib/rt/itcms/Object#makeGray
+    end
+   end
+  end
+ )
+ (func $duplicate-fields/A2#set:bar (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+  local.get $0
+  local.get $1
+  i32.const 0
+  call $~lib/rt/itcms/__link
+ )
+ (func $duplicate-fields/B2#set:bar (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+  local.get $0
+  local.get $1
+  i32.const 0
+  call $~lib/rt/itcms/__link
+ )
+ (func $duplicate-fields/Foo#set:foo (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+ )
+ (func $duplicate-fields/Bar#set:bar (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=4
+ )
+ (func $duplicate-fields/A3#set:protProt (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+ )
+ (func $duplicate-fields/A3#set:protPub (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=4
+ )
+ (func $duplicate-fields/A3#set:pubPub (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=8
+ )
+ (func $duplicate-fields/B3#set:protProt (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store
+ )
+ (func $duplicate-fields/B3#set:protPub (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=4
+ )
+ (func $duplicate-fields/B3#set:pubPub (param $0 i32) (param $1 i32)
+  local.get $0
+  local.get $1
+  i32.store offset=8
+ )
+ (func $duplicate-fields/B3#get:protProt (param $0 i32) (result i32)
+  local.get $0
+  i32.load
+ )
+ (func $duplicate-fields/B3#get:protPub (param $0 i32) (result i32)
+  local.get $0
+  i32.load offset=4
+ )
+ (func $duplicate-fields/B3#get:pubPub (param $0 i32) (result i32)
+  local.get $0
+  i32.load offset=8
+ )
+ (func $~lib/rt/__visit_globals (param $0 i32)
+  (local $1 i32)
+  global.get $duplicate-fields/foo
+  local.tee $1
+  if
+   local.get $1
+   local.get $0
+   call $~lib/rt/itcms/__visit
+  end
+  global.get $duplicate-fields/raz
+  local.tee $1
+  if
+   local.get $1
+   local.get $0
+   call $~lib/rt/itcms/__visit
+  end
+  i32.const 224
+  local.get $0
+  call $~lib/rt/itcms/__visit
+  i32.const 32
+  local.get $0
+  call $~lib/rt/itcms/__visit
+ )
+ (func $~lib/arraybuffer/ArrayBufferView~visit (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  local.get $0
+  i32.load
+  local.tee $2
+  if
+   local.get $2
+   local.get $1
+   call $~lib/rt/itcms/__visit
+  end
+ )
+ (func $duplicate-fields/A2~visit (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  local.get $0
+  i32.load
+  local.tee $2
+  if
+   local.get $2
+   local.get $1
+   call $~lib/rt/itcms/__visit
+  end
+ )
+ (func $duplicate-fields/B2~visit (param $0 i32) (param $1 i32)
+  (local $2 i32)
+  local.get $0
+  local.get $1
+  call $duplicate-fields/A2~visit
+  local.get $0
+  i32.load
+  local.tee $2
+  if
+   local.get $2
+   local.get $1
+   call $~lib/rt/itcms/__visit
+  end
+ )
+ (func $~lib/rt/__visit_members (param $0 i32) (param $1 i32)
+  block $invalid
+   block $duplicate-fields/A3
+    block $duplicate-fields/B3
+     block $duplicate-fields/Bar
+      block $duplicate-fields/B2
+       block $duplicate-fields/Foo
+        block $duplicate-fields/A2
+         block $duplicate-fields/B
+          block $duplicate-fields/A
+           block $~lib/arraybuffer/ArrayBufferView
+            block $~lib/string/String
+             block $~lib/arraybuffer/ArrayBuffer
+              local.get $0
+              i32.const 8
+              i32.sub
+              i32.load
+              br_table $~lib/arraybuffer/ArrayBuffer $~lib/string/String $~lib/arraybuffer/ArrayBufferView $duplicate-fields/A $duplicate-fields/B $duplicate-fields/A2 $duplicate-fields/Foo $duplicate-fields/B2 $duplicate-fields/Bar $duplicate-fields/B3 $duplicate-fields/A3 $invalid
+             end
+             return
+            end
+            return
+           end
+           local.get $0
+           local.get $1
+           call $~lib/arraybuffer/ArrayBufferView~visit
+           return
+          end
+          return
+         end
+         return
+        end
+        local.get $0
+        local.get $1
+        call $duplicate-fields/A2~visit
+        return
+       end
+       return
+      end
+      local.get $0
+      local.get $1
+      call $duplicate-fields/B2~visit
+      return
+     end
+     return
+    end
+    return
+   end
+   return
+  end
+  unreachable
+ )
+ (func $~start
+  call $start:duplicate-fields
+ )
+ (func $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  global.get $~lib/memory/__data_end
+  i32.lt_s
+  if
+   i32.const 16976
+   i32.const 17024
+   i32.const 1
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+ )
+ (func $start:duplicate-fields
+  (local $0 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  i32.const 0
+  i32.const 0
+  i32.eq
+  drop
+  i32.const 0
+  i32.const 0
+  i32.eq
+  drop
+  memory.size
+  i32.const 16
+  i32.shl
+  global.get $~lib/memory/__heap_base
+  i32.sub
+  i32.const 1
+  i32.shr_u
+  global.set $~lib/rt/itcms/threshold
+  i32.const 144
+  call $~lib/rt/itcms/initLazy
+  global.set $~lib/rt/itcms/pinSpace
+  i32.const 176
+  call $~lib/rt/itcms/initLazy
+  global.set $~lib/rt/itcms/toSpace
+  i32.const 320
+  call $~lib/rt/itcms/initLazy
+  global.set $~lib/rt/itcms/fromSpace
+  i32.const 0
+  i32.const 10
+  call $duplicate-fields/B#constructor
+  global.set $duplicate-fields/foo
+  global.get $duplicate-fields/foo
+  i32.load
+  i32.const 10
+  i32.eq
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 432
+   i32.const 15
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+  i32.const 0
+  i32.const 0
+  i32.eq
+  drop
+  i32.const 0
+  i32.const 0
+  i32.eq
+  drop
+  i32.const 0
+  i32.const 0
+  i32.const 1
+  i32.const 2
+  call $duplicate-fields/Bar#constructor
+  local.set $0
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  i32.store
+  local.get $0
+  call $duplicate-fields/B2#constructor
+  global.set $duplicate-fields/raz
+  global.get $duplicate-fields/raz
+  i32.load
+  i32.load offset=4
+  i32.const 2
+  i32.eq
+  i32.eqz
+  if
+   i32.const 0
+   i32.const 432
+   i32.const 43
+   i32.const 1
+   call $~lib/builtins/abort
+   unreachable
+  end
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $duplicate-fields/A#constructor (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  local.get $0
+  i32.eqz
+  if
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.const 3
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+  end
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/A#set:bar
+  local.get $0
+  local.get $1
+  call $duplicate-fields/A#set:bar
+  local.get $0
+  local.set $2
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $2
+ )
+ (func $duplicate-fields/B#constructor (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  local.get $0
+  i32.eqz
+  if
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.const 4
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+  end
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/B#set:bar
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  local.get $1
+  call $duplicate-fields/A#constructor
+  local.tee $0
+  i32.store
+  local.get $0
+  local.get $1
+  call $duplicate-fields/B#set:bar
+  local.get $0
+  local.set $2
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $2
+ )
+ (func $duplicate-fields/A2#constructor (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  local.get $0
+  i32.eqz
+  if
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.const 5
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+  end
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/A2#set:bar
+  local.get $0
+  local.get $1
+  call $duplicate-fields/A2#set:bar
+  local.get $0
+  local.set $2
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $2
+ )
+ (func $duplicate-fields/B2#constructor (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  local.get $0
+  i32.eqz
+  if
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.const 7
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+  end
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/B2#set:bar
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  local.get $1
+  call $duplicate-fields/A2#constructor
+  local.tee $0
+  i32.store
+  local.get $0
+  local.get $1
+  call $duplicate-fields/B2#set:bar
+  local.get $0
+  local.set $2
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $2
+ )
+ (func $duplicate-fields/Foo#constructor (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  local.get $0
+  i32.eqz
+  if
+   global.get $~lib/memory/__stack_pointer
+   i32.const 4
+   i32.const 6
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+  end
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/Foo#set:foo
+  local.get $0
+  local.get $1
+  call $duplicate-fields/Foo#set:foo
+  local.get $0
+  local.set $2
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $2
+ )
+ (func $duplicate-fields/Bar#constructor (param $0 i32) (param $1 i32) (param $2 i32) (result i32)
+  (local $3 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  local.get $0
+  i32.eqz
+  if
+   global.get $~lib/memory/__stack_pointer
+   i32.const 8
+   i32.const 8
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+  end
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/Bar#set:bar
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  local.get $1
+  call $duplicate-fields/Foo#constructor
+  local.tee $0
+  i32.store
+  local.get $0
+  local.get $2
+  call $duplicate-fields/Bar#set:bar
+  local.get $0
+  local.set $3
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $3
+ )
+ (func $duplicate-fields/A3#constructor (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  local.get $0
+  i32.eqz
+  if
+   global.get $~lib/memory/__stack_pointer
+   i32.const 12
+   i32.const 10
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+  end
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/A3#set:protProt
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/A3#set:protPub
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/A3#set:pubPub
+  local.get $0
+  local.set $1
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $1
+ )
+ (func $duplicate-fields/B3#constructor (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  i32.const 0
+  i32.store
+  local.get $0
+  i32.eqz
+  if
+   global.get $~lib/memory/__stack_pointer
+   i32.const 12
+   i32.const 9
+   call $~lib/rt/itcms/__new
+   local.tee $0
+   i32.store
+  end
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  call $duplicate-fields/A3#constructor
+  local.tee $0
+  i32.store
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/B3#set:protProt
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/B3#set:protPub
+  local.get $0
+  i32.const 0
+  call $duplicate-fields/B3#set:pubPub
+  local.get $0
+  local.set $1
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $1
+ )
+ (func $export:duplicate-fields/B3#get:protProt (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  i32.store
+  local.get $0
+  call $duplicate-fields/B3#get:protProt
+  local.set $1
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $1
+ )
+ (func $export:duplicate-fields/B3#set:protProt (param $0 i32) (param $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  i32.store
+  local.get $0
+  local.get $1
+  call $duplicate-fields/B3#set:protProt
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#get:protPub (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  i32.store
+  local.get $0
+  call $duplicate-fields/B3#get:protPub
+  local.set $1
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $1
+ )
+ (func $export:duplicate-fields/B3#set:protPub (param $0 i32) (param $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  i32.store
+  local.get $0
+  local.get $1
+  call $duplicate-fields/B3#set:protPub
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#get:pubPub (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  i32.store
+  local.get $0
+  call $duplicate-fields/B3#get:pubPub
+  local.set $1
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $1
+ )
+ (func $export:duplicate-fields/B3#set:pubPub (param $0 i32) (param $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  i32.store
+  local.get $0
+  local.get $1
+  call $duplicate-fields/B3#set:pubPub
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+ )
+ (func $export:duplicate-fields/B3#constructor (param $0 i32) (result i32)
+  (local $1 i32)
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.sub
+  global.set $~lib/memory/__stack_pointer
+  call $~stack_check
+  global.get $~lib/memory/__stack_pointer
+  local.get $0
+  i32.store
+  local.get $0
+  call $duplicate-fields/B3#constructor
+  local.set $1
+  global.get $~lib/memory/__stack_pointer
+  i32.const 4
+  i32.add
+  global.set $~lib/memory/__stack_pointer
+  local.get $1
+ )
+)