cases: update for new error wording, add coverage for field/decl name conflict

Author: mlugg

test/cases/compile_errors/colliding_invalid_top_level_functions.zig

@@ -5,10 +5,9 @@ export fn entry() usize {
 }
 
 // error
-// backend=stage2
-// target=native
 //
-// :2:1: error: redeclaration of 'func'
-// :1:1: note: other declaration here
+// :1:4: error: duplicate struct member name 'func'
+// :2:4: note: duplicate name here
+// :1:1: note: struct declared here
 // :1:11: error: use of undeclared identifier 'bogus'
 // :2:11: error: use of undeclared identifier 'bogus'

test/cases/compile_errors/field_decl_name_conflict.zig

@@ -0,0 +1,18 @@
+foo: u32,
+bar: u32,
+qux: u32,
+
+const foo = 123;
+
+var bar: u8 = undefined;
+fn bar() void {}
+
+// error
+//
+// :1:1: error: duplicate struct member name 'foo'
+// :5:7: note: duplicate name here
+// :1:1: note: struct declared here
+// :2:1: error: duplicate struct member name 'bar'
+// :7:5: note: duplicate name here
+// :8:4: note: duplicate name here
+// :1:1: note: struct declared here

test/cases/compile_errors/multiple_function_definitions.zig

@@ -5,8 +5,7 @@ export fn entry() void {
 }
 
 // error
-// backend=stage2
-// target=native
 //
-// :2:1: error: redeclaration of 'a'
-// :1:1: note: other declaration here
+// :1:4: error: duplicate struct member name 'a'
+// :2:4: note: duplicate name here
+// :1:1: note: struct declared here

test/cases/compile_errors/redefinition_of_enums.zig

@@ -5,5 +5,6 @@ const A = enum { x };
 // backend=stage2
 // target=native
 //
-// :2:1: error: redeclaration of 'A'
-// :1:1: note: other declaration here
+// :1:7: error: duplicate struct member name 'A'
+// :2:7: note: duplicate name here
+// :1:1: note: struct declared here

test/cases/compile_errors/redefinition_of_global_variables.zig

@@ -5,5 +5,6 @@ var a: i32 = 2;
 // backend=stage2
 // target=native
 //
-// :2:1: error: redeclaration of 'a'
-// :1:1: note: other declaration here
+// :1:5: error: duplicate struct member name 'a'
+// :2:5: note: duplicate name here
+// :1:1: note: struct declared here

test/cases/compile_errors/redefinition_of_struct.zig

@@ -5,5 +5,6 @@ const A = struct { y: i32 };
 // backend=stage2
 // target=native
 //
-// :2:1: error: redeclaration of 'A'
-// :1:1: note: other declaration here
+// :1:7: error: duplicate struct member name 'A'
+// :2:7: note: duplicate name here
+// :1:1: note: struct declared here

test/cases/function_redeclaration.zig

@@ -8,7 +8,8 @@ fn foo() void {
 
 // error
 //
-// :3:1: error: redeclaration of 'entry'
-// :2:1: note: other declaration here
+// :2:4: error: duplicate struct member name 'entry'
+// :3:4: note: duplicate name here
+// :2:1: note: struct declared here
 // :6:9: error: local variable shadows declaration of 'foo'
 // :5:1: note: declared here

test/cases/global_variable_redeclaration.zig

@@ -4,5 +4,6 @@ var foo = true;
 
 // error
 //
-// :3:1: error: redeclaration of 'foo'
-// :2:1: note: other declaration here
+// :2:5: error: duplicate struct member name 'foo'
+// :3:5: note: duplicate name here
+// :2:1: note: struct declared here