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| author | Rich Felker <dalias@aerifal.cx> | 2011-05-22 12:34:33 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-05-22 12:34:33 -0400 |
| commit | 19892bf0a740062cf51b84c27f53f7c0f3120b53 (patch) | |
| tree | 6f166ed32a679e80e108435640f99046784006aa /src/linux/sbrk.c | |
| parent | c5025bfabefe952507cf333ea89854d6ba612549 (diff) | |
| download | musl-19892bf0a740062cf51b84c27f53f7c0f3120b53.tar.gz musl-19892bf0a740062cf51b84c27f53f7c0f3120b53.tar.bz2 musl-19892bf0a740062cf51b84c27f53f7c0f3120b53.tar.xz musl-19892bf0a740062cf51b84c27f53f7c0f3120b53.zip | |
fix brk/sbrk behavior to match the real legacy functions
Diffstat (limited to 'src/linux/sbrk.c')
| -rw-r--r-- | src/linux/sbrk.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/linux/sbrk.c b/src/linux/sbrk.c index b2943a92..5fab74be 100644 --- a/src/linux/sbrk.c +++ b/src/linux/sbrk.c @@ -3,5 +3,7 @@ void *sbrk(ptrdiff_t inc) { - return (void *)syscall(SYS_brk, syscall(SYS_brk, 0)+inc); + unsigned long cur = syscall(SYS_brk, 0); + if (inc && syscall(SYS_brk, cur+inc) != cur+inc) return (void *)-1; + return (void *)cur; } |