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| author | Cyril Hrubis <chrubis@suse.cz> | 2015-05-20 13:50:00 +0200 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2015-07-07 12:13:50 +0200 |
| commit | c13e07830800dd95ca7684b3c473394c77059c97 (patch) | |
| tree | 6688377b329a6dc6167995e7ecf3b7202499f29a | |
| parent | 6471190491435c6ee819232f3eb71ad9638563cc (diff) | |
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Set errno to ENOMEM on overflow in sbrk (bug 18592)
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | misc/sbrk.c | 13 |
2 files changed, 14 insertions, 4 deletions
@@ -1,3 +1,8 @@ +2015-07-07 Cyril Hrubis <chrubis@suse.cz> + + [BZ #18592] + * misc/sbrk.c: Set errno to ENOMEM on overflow. + 2015-07-06 Wilco Dijkstra <wdijkstr@arm.com> * sysdeps/aarch64/fpu/math_private.h (__ieee754_sqrt): diff --git a/misc/sbrk.c b/misc/sbrk.c index 87b5472bda..89ab9c4a8c 100644 --- a/misc/sbrk.c +++ b/misc/sbrk.c @@ -47,10 +47,15 @@ __sbrk (intptr_t increment) return __curbrk; oldbrk = __curbrk; - if ((increment > 0 - ? ((uintptr_t) oldbrk + (uintptr_t) increment < (uintptr_t) oldbrk) - : ((uintptr_t) oldbrk < (uintptr_t) -increment)) - || __brk (oldbrk + increment) < 0) + if (increment > 0 + ? ((uintptr_t) oldbrk + (uintptr_t) increment < (uintptr_t) oldbrk) + : ((uintptr_t) oldbrk < (uintptr_t) -increment)) + { + __set_errno (ENOMEM); + return (void *) -1; + } + + if (__brk (oldbrk + increment) < 0) return (void *) -1; return oldbrk; |