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overcat
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Fidget-Spinner,
markshannon,
savannahostrowski and
tomasr8
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September 20, 2026 01:19
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cocolato
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Sep 20, 2026
cocolato
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we can add a mask macro like this:
#define _Py_METH_CALL_FLAGS \
(METH_VARARGS | METH_FASTCALL | METH_NOARGS | METH_O | METH_KEYWORDS | METH_METHOD)
Comment on lines
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| int flags = PyCFunction_GET_FLAGS(callable_o); | ||
| // METH_CLASS, METH_STATIC and METH_COEXIST do not change the C | ||
| // calling convention, and the specializer ignores them. | ||
| flags &= ~(METH_CLASS | METH_STATIC | METH_COEXIST); | ||
| EXIT_IF(flags != METH_O); |
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Suggested change
| int flags = PyCFunction_GET_FLAGS(callable_o); | |
| // METH_CLASS, METH_STATIC and METH_COEXIST do not change the C | |
| // calling convention, and the specializer ignores them. | |
| flags &= ~(METH_CLASS | METH_STATIC | METH_COEXIST); | |
| EXIT_IF(flags != METH_O); | |
| EXIT_IF((PyCFunction_GET_FLAGS(callable_o) & _Py_METH_CALL_FLAGS) != METH_O); |
Author
Comment on lines
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| int flags = PyCFunction_GET_FLAGS(callable_o); | ||
| flags &= ~(METH_CLASS | METH_STATIC | METH_COEXIST); | ||
| if (total_args == 1 && flags == METH_O) { |
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ditto
Suggested change
| int flags = PyCFunction_GET_FLAGS(callable_o); | |
| flags &= ~(METH_CLASS | METH_STATIC | METH_COEXIST); | |
| if (total_args == 1 && flags == METH_O) { | |
| if ((PyCFunction_GET_FLAGS(callable_o) & _Py_METH_CALL_FLAGS) == METH_FASTCALL) { |
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Fixes #157833
Ignore
METH_CLASS,METH_STATICandMETH_COEXISTin the specialized C call guards and corresponding Tier 2 optimizer checks. This prevents calls accepted by the specializer from failing their flag guards on every call.METH_METHODremains checked because it changes the C calling convention.Add Tier 1 and Tier 2 regression tests for all seven affected instructions, regenerate the affected files.
METH_CLASS,METH_STATICorMETH_COEXIST#157833