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gh-131338: Disable computed stack limit checks on non-glibc linux (#134336)

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Co-authored-by: Kumar Aditya <kumaraditya@python.org>
Co-authored-by: Victor Stinner <vstinner@python.org>
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R. David Murray 2025-07-28 12:32:34 -04:00 • committed by GitHub
parent 7040aa54f1
commit 1e9b8f2f85
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2 changed files with 7 additions and 1 deletions
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6
Python/ceval.c
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@ -452,7 +452,11 @@ _Py_InitializeRecursionLimits(PyThreadState *tstate)
_tstate->c_stack_soft_limit = _tstate->c_stack_hard_limit + _PyOS_STACK_MARGIN_BYTES;
#else
uintptr_t here_addr = _Py_get_machine_stack_pointer();
# if defined(HAVE_PTHREAD_GETATTR_NP) && !defined(_AIX) && !defined(__NetBSD__)
/// XXX musl supports HAVE_PTHRED_GETATTR_NP, but the resulting stack size
/// (on alpine at least) is much smaller than expected and imposes undue limits
/// compared to the old stack size estimation. (We assume musl is not glibc.)
# if defined(HAVE_PTHREAD_GETATTR_NP) && !defined(_AIX) && \
!defined(__NetBSD__) && (defined(__GLIBC__) || !defined(__linux__))
size_t stack_size, guard_size;
void *stack_addr;
pthread_attr_t attr;