Try increasing the C recursion limit

Author: markshannon

Include/cpython/pystate.h

@@ -225,7 +225,7 @@ struct _ts {
 #  define Py_C_RECURSION_LIMIT 500
 #else
    // This value is duplicated in Lib/test/support/__init__.py
-#  define Py_C_RECURSION_LIMIT 1500
+#  define Py_C_RECURSION_LIMIT 4500
 #endif
 
 

Lib/test/support/__init__.py

@@ -2374,15 +2374,15 @@ def adjust_int_max_str_digits(max_digits):
         sys.set_int_max_str_digits(current)
 
 #For recursion tests, easily exceeds default recursion limit
-EXCEEDS_RECURSION_LIMIT = 5000
+EXCEEDS_RECURSION_LIMIT = 10_000
 
 def _get_c_recursion_limit():
     try:
         import _testcapi
         return _testcapi.Py_C_RECURSION_LIMIT
     except (ImportError, AttributeError):
         # Originally taken from Include/cpython/pystate.h .
-        return 1500
+        return 4500
 
 # The default C recursion limit.
 Py_C_RECURSION_LIMIT = _get_c_recursion_limit()

Parser/asdl_c.py

@@ -1389,7 +1389,7 @@ class PartingShots(StaticVisitor):
 
     int starting_recursion_depth;
     /* Be careful here to prevent overflow. */
-    int COMPILER_STACK_FRAME_SCALE = 2;
+    int COMPILER_STACK_FRAME_SCALE = 1;
     PyThreadState *tstate = _PyThreadState_GET();
     if (!tstate) {
         return NULL;

Python/Python-ast.c

@@ -1039,7 +1039,7 @@ validate_type_params(struct validator *state, asdl_type_param_seq *tps)
 
 
 /* See comments in symtable.c. */
-#define COMPILER_STACK_FRAME_SCALE 2
+#define COMPILER_STACK_FRAME_SCALE 1
 
 int
 _PyAST_Validate(mod_ty mod)

Python/ast.c

@@ -1101,7 +1101,7 @@ astfold_type_param(type_param_ty node_, PyArena *ctx_, _PyASTOptimizeState *stat
 #undef CALL_SEQ
 
 /* See comments in symtable.c. */
-#define COMPILER_STACK_FRAME_SCALE 2
+#define COMPILER_STACK_FRAME_SCALE 1
 
 int
 _PyAST_Optimize(mod_ty mod, PyArena *arena, int optimize, int ff_features)

Python/ast_opt.c

@@ -389,7 +389,7 @@ symtable_new(void)
 /* Using a scaling factor means this should automatically adjust when
    the recursion limit is adjusted for small or large C stack allocations.
 */
-#define COMPILER_STACK_FRAME_SCALE 2
+#define COMPILER_STACK_FRAME_SCALE 1
 
 struct symtable *
 _PySymtable_Build(mod_ty mod, PyObject *filename, PyFutureFeatures *future)