zig

commit f9c9ae84c6c0773ab8dc710cae3ce9024ca1e91c (tree)
parent 4bfa18b07f5fe139688cdf07fb0e2b4f73c3f42e
Author: Andrew Kelley <andrew@ziglang.org>
Date:   Fri, 28 Jan 2022 18:31:23 -0700

glibc patch: version-gate _DYNAMIC_STACK_SIZE_SOURCE

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.

Diffstat:
M
lib/libc/include/generic-glibc/features.h
 | 
4
++++

1 file changed, 4 insertions(+), 0 deletions(-)
diff --git a/lib/libc/include/generic-glibc/features.h b/lib/libc/include/generic-glibc/features.h
@@ -222,8 +222,12 @@
 # define _DEFAULT_SOURCE	1
 # undef  _ATFILE_SOURCE
 # define _ATFILE_SOURCE	1
+
+# 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,