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glibc patch: version-gate _DYNAMIC_STACK_SIZE_SOURCE

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This is a patch to glibc features.h which makes
_DYNAMIC_STACK_SIZE_SOURCE undefined unless the version is >= 2.34.

This feature was introduced with glibc 2.34 and without this patch, code
built against these headers but then run on an older glibc will end up
making a call to sysconf() that returns -1 for the value of SIGSTKSZ
and MINSIGSTKSZ.
This commit is contained in:
Andrew Kelley 2022-01-28 18:31:23 -07:00
parent cbe9923c22
commit a4a88e441f
1 changed files with 5 additions and 0 deletions
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5
lib/libc/include/generic-glibc/features.h vendored
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@ -222,8 +222,13 @@
# define _DEFAULT_SOURCE 1
# undef _ATFILE_SOURCE
# define _ATFILE_SOURCE 1
/* Zig patch */
# if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 34) || __GLIBC__ > 2
# undef _DYNAMIC_STACK_SIZE_SOURCE
# define _DYNAMIC_STACK_SIZE_SOURCE 1
# endif
#endif
/* If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,