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| author | Szabolcs Nagy <nsz@port70.net> | 2016-01-31 17:31:03 +0100 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2016-01-31 17:34:45 -0500 |
| commit | d1507646975cbf6c3e511ba07b193f27f032d108 (patch) | |
| tree | ddac2ad8e132d01c5edfab866aba43f836595ffe /src/malloc | |
| parent | 2810b30fc3c515e38d6acabe87de7b48bb8bfc7b (diff) | |
| download | musl-d1507646975cbf6c3e511ba07b193f27f032d108.tar.gz musl-d1507646975cbf6c3e511ba07b193f27f032d108.tar.bz2 musl-d1507646975cbf6c3e511ba07b193f27f032d108.tar.xz musl-d1507646975cbf6c3e511ba07b193f27f032d108.zip | |
fix malloc_usable_size for NULL input
the linux man page specifies malloc_usable_size(0) to return 0 and
this is the semantics other implementations follow (jemalloc).
reported by Alexander Monakov.
Diffstat (limited to 'src/malloc')
| -rw-r--r-- | src/malloc/malloc_usable_size.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/malloc/malloc_usable_size.c b/src/malloc/malloc_usable_size.c index 8cccd9d8..6743ea77 100644 --- a/src/malloc/malloc_usable_size.c +++ b/src/malloc/malloc_usable_size.c @@ -13,5 +13,5 @@ struct chunk { size_t malloc_usable_size(void *p) { - return CHUNK_SIZE(MEM_TO_CHUNK(p)) - OVERHEAD; + return p ? CHUNK_SIZE(MEM_TO_CHUNK(p)) - OVERHEAD : 0; } |