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gh-127117: Ensure the Correct Last Fields of PyInterpreterState and of _PyRuntimeState (gh-127118)

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We add some comments so contributors can be aware and we move one out-of-place field up.
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Eric Snow 2024-11-22 09:37:02 -07:00 committed by GitHub
parent a5440d4a38
commit 5ba67af006
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2 changed files with 10 additions and 7 deletions
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2
Include/internal/pycore_interp.h
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@ -283,6 +283,8 @@ struct _is {
/* the initial PyInterpreterState.threads.head */
_PyThreadStateImpl _initial_thread;
// _initial_thread should be the last field of PyInterpreterState.
// See https://github.com/python/cpython/issues/127117.
};

15
Include/internal/pycore_runtime.h
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@ -169,6 +169,12 @@ typedef struct pyruntimestate {
struct _Py_unicode_runtime_state unicode_state;
struct _types_runtime_state types;
#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
// Used in "Python/emscripten_trampoline.c" to choose between type
// reflection trampoline and EM_JS trampoline.
bool wasm_type_reflection_available;
#endif
/* All the objects that are shared by the runtime's interpreters. */
struct _Py_cached_objects cached_objects;
struct _Py_static_objects static_objects;
@ -189,13 +195,8 @@ typedef struct pyruntimestate {
/* _PyRuntimeState.interpreters.main */
PyInterpreterState _main_interpreter;
#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
// Used in "Python/emscripten_trampoline.c" to choose between type
// reflection trampoline and EM_JS trampoline.
bool wasm_type_reflection_available;
#endif
// _main_interpreter should be the last field of _PyRuntimeState.
// See https://github.com/python/cpython/issues/127117.
} _PyRuntimeState;