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libgcc: only use __mmap if glibc >- 2.26 

* generic-morestack.c: Only use __mmap on glibc >= 2.26.
This commit is contained in:
Ian Lance Taylor 2020-04-04 13:45:45 -07:00
parent 75c8d6e54a
commit 458ca332d1
2 changed files with 5 additions and 1 deletions
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libgcc/ChangeLog
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@ -1,3 +1,7 @@
2020-04-04 Ian Lance Taylor <iant@golang.org>
* generic-morestack.c: Only use __mmap on glibc >= 2.26.
2020-04-03 Ian Lance Taylor <iant@golang.org>
* generic-morestack.c: On GNU/Linux use __mmap/__munmap rather

2
libgcc/generic-morestack.c
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@ -60,7 +60,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
glibc on GNU/Linux we can avoid the problem by calling __mmap and
__munmap. */
#ifdef __gnu_linux__
#if defined(__gnu_linux__) && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 26))
extern void *__mmap (void *, size_t, int, int, int, off_t);
extern int __munmap (void *, size_t);