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gh-131338: Disable new stack size code for non-glibc.#134336
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gh-131338: Disable new stack size code for non-glibc.#134336
bitdancer wants to merge1 commit intopython:mainfrombitdancer:revert_new_stack_check_for_non_glibc-131338
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MUSL claims to support pthread_getattr_np, but the response returned isoff by at least an order of magnitude compared to reality. This isapparently a long standing problem. MUSL also does not provide any wayto detect directly that it is the libc. It would be possible to addthings to configure to detect that MUSL is the compiler, but since thiscode has caused problems for a lot of non-glibc platforms, it seemseasier to just restrict it to glibc.
| @@ -442,7 +442,8 @@ _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__) | |||
| # if defined(HAVE_PTHREAD_GETATTR_NP) && !defined(_AIX) && \ | |||
| !defined(__NetBSD__) && defined(__GLIBC__) | |||
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I don't think that this call is correct. It disables the call on FreeBSD.
Maybe check for "glibc or not Linux"?
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MUSL claims to support pthread_getattr_np, but the response returned is off by at least an order of magnitude compared to reality. This is apparently a long standing problem. MUSL also does not provide any way to detect directly that it is the libc. It would be possible to add things to configure to detect that MUSL is the compiler, but since this code has apparently caused problems for a lot of non-glibc platforms, it seems easier to just restrict it to glibc.