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| author | Alexander Monakov <amonakov@ispras.ru> | 2017-06-27 20:58:47 +0300 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2017-07-04 17:11:33 -0400 |
| commit | 60ab365cae24063b0f21821860ca16fb63e81f81 (patch) | |
| tree | 0c6f5611824e45ae2c5e72a618703ef3c24a4957 | |
| parent | f6888840613a510c99915ba7732df8ec54d52637 (diff) | |
| download | musl-60ab365cae24063b0f21821860ca16fb63e81f81.tar.gz musl-60ab365cae24063b0f21821860ca16fb63e81f81.tar.bz2 musl-60ab365cae24063b0f21821860ca16fb63e81f81.tar.xz musl-60ab365cae24063b0f21821860ca16fb63e81f81.zip | |
fix undefined behavior in free
| -rw-r--r-- | src/malloc/malloc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/malloc/malloc.c b/src/malloc/malloc.c index d5ee4280..9e05e1d6 100644 --- a/src/malloc/malloc.c +++ b/src/malloc/malloc.c @@ -450,14 +450,15 @@ copy_realloc: void free(void *p) { - struct chunk *self = MEM_TO_CHUNK(p); - struct chunk *next; + struct chunk *self, *next; size_t final_size, new_size, size; int reclaim=0; int i; if (!p) return; + self = MEM_TO_CHUNK(p); + if (IS_MMAPPED(self)) { size_t extra = self->psize; char *base = (char *)self - extra; |