Mar 5, 2026 · Mar 4, 2026 · Mar 4, 2026 · Mar 4, 2026 · Mar 4, 2026 · Mar 4, 2026
diff --git a/Include/internal/pycore_interp_structs.h b/Include/internal/pycore_interp_structs.h

 /* For now we hard-code this to a value for which we are confident
   all the static builtin types will fit (for all builds). */
 #define _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES201
 #define _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES202
 #define _Py_MAX_MANAGED_STATIC_EXT_TYPES 10
 #define _Py_MAX_MANAGED_STATIC_TYPES \
    (_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES + _Py_MAX_MANAGED_STATIC_EXT_TYPES)
diff --git a/Modules/_testinternalcapi.c b/Modules/_testinternalcapi.c
 static int
 module_exec(PyObject *module)
 {
    PyInterpreterState *interp = PyInterpreterState_Get();

    if (_PyTestInternalCapi_Init_Lock(module) < 0) {
        return 1;
    }
        return 1;
    }

    // + 1 more due to one loop spent on tracing.
    unsigned long threshold = interp->opt_config.jump_backward_initial_value + 2;
    if (PyModule_Add(module, "TIER2_THRESHOLD",
        // + 1 more due to one loop spent on tracing.
                        PyLong_FromLong(JUMP_BACKWARD_INITIAL_VALUE + 2)) < 0) {
                        PyLong_FromUnsignedLong(threshold)) < 0) {
        return 1;
    }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -496,7 +496,7 @@ struct _py_func_state {

		/* For now we hard-code this to a value for which we are confident
		all the static builtin types will fit (for all builds). */
		#define _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES201
		#define _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES202
Copy link Member Fidget-SpinnerMar 4, 2026 Choose a reason for hiding this comment The reason will be displayed to describe this comment to others.Learn more. Why was this changed? Copy link Member vstinnerMar 4, 2026 Choose a reason for hiding this comment The reason will be displayed to describe this comment to others.Learn more. Because a new static type was added recently, and JIT tests crash or fail with an assertion error without this change:#145496 (comment)
		#define _Py_MAX_MANAGED_STATIC_EXT_TYPES 10
		#define _Py_MAX_MANAGED_STATIC_TYPES \
		(_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES + _Py_MAX_MANAGED_STATIC_EXT_TYPES)
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -2966,6 +2966,8 @@ static PyMethodDef module_functions[] = {
		static int
		module_exec(PyObject *module)
		{
		PyInterpreterState *interp = PyInterpreterState_Get();

		if (_PyTestInternalCapi_Init_Lock(module) < 0) {
		return 1;
		}
Expand DownExpand Up		@@ -3007,9 +3009,10 @@ module_exec(PyObject *module)
		return 1;
		}

		// + 1 more due to one loop spent on tracing.
		unsigned long threshold = interp->opt_config.jump_backward_initial_value + 2;
		if (PyModule_Add(module, "TIER2_THRESHOLD",
		// + 1 more due to one loop spent on tracing.
		PyLong_FromLong(JUMP_BACKWARD_INITIAL_VALUE + 2)) < 0) {
		PyLong_FromUnsignedLong(threshold)) < 0) {
		return 1;
		}

Expand Down