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GH-139914: Handle stack growth direction on HPPA (GH-140028)

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Adapted from a patch for Python 3.14 submitted to the Debian BTS by John
https://bugs.debian.org/1105111#20

Co-authored-by: John David Anglin <dave.anglin@bell.net>
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Stefano Rivera 2025-11-17 05:41:22 -08:00 • committed by GitHub
parent 336366fd7c
commit f6dd9c12a8
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10 changed files with 94 additions and 5 deletions
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4
Include/internal/pycore_pystate.h
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@ -331,7 +331,11 @@ _Py_RecursionLimit_GetMargin(PyThreadState *tstate)
_PyThreadStateImpl *_tstate = (_PyThreadStateImpl *)tstate;
assert(_tstate->c_stack_hard_limit != 0);
intptr_t here_addr = _Py_get_machine_stack_pointer();
#if _Py_STACK_GROWS_DOWN
return Py_ARITHMETIC_RIGHT_SHIFT(intptr_t, here_addr - (intptr_t)_tstate->c_stack_soft_limit, _PyOS_STACK_MARGIN_SHIFT);
#else
return Py_ARITHMETIC_RIGHT_SHIFT(intptr_t, (intptr_t)_tstate->c_stack_soft_limit - here_addr, _PyOS_STACK_MARGIN_SHIFT);
#endif
}
#ifdef __cplusplus