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| author | Lennart Poettering <lennart@poettering.net> | 2012-09-20 17:53:03 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2012-09-20 17:53:03 +0200 |
| commit | aa408e7799cf01f048efedf434916544b4badc77 (patch) | |
| tree | c0aa91be952b32c6e05006fe825b180a8c85e503 /src/shared/util.h | |
| parent | 3f8cc098d218525710e5cbad9adf37001d3b6060 (diff) | |
util: fix overflow checks
Diffstat (limited to 'src/shared/util.h')
| -rw-r--r-- | src/shared/util.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/shared/util.h b/src/shared/util.h index 2e49cfde2e..e1d4735ee3 100644 --- a/src/shared/util.h +++ b/src/shared/util.h @@ -545,14 +545,14 @@ void closedirp(DIR **d); void umaskp(mode_t *u); _malloc_ static inline void *malloc_multiply(size_t a, size_t b) { - if (_unlikely_(a > ((size_t) -1) / b)) + if (_unlikely_(b == 0 || a > ((size_t) -1) / b)) return NULL; return malloc(a * b); } _malloc_ static inline void *memdup_multiply(const void *p, size_t a, size_t b) { - if (_unlikely_(a > ((size_t) -1) / b)) + if (_unlikely_(b == 0 || a > ((size_t) -1) / b)) return NULL; return memdup(p, a * b); |