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| author | Ivan Maidanski <ivmai@mail.ru> | 2012-09-11 23:55:32 +0400 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2012-09-11 23:55:32 +0400 |
| commit | 3f5951f63fea36032b1fb65f5211ffaf4d03e74e (patch) | |
| tree | af59dc9cbe9fc8a26802bca153411ef865dce424 /cord | |
| parent | a4530754bedcb4a0c6679a5c72c4bca0d63a5977 (diff) | |
| download | bdwgc-3f5951f63fea36032b1fb65f5211ffaf4d03e74e.tar.gz | |
Fix null-pointer dereference in CORD_substr_closure
* cord/cordbscs.c (CORD_substr_closure): Prevent SEGV if CORD_from_fn
returned NULL/CORD_EMPTY (in case "n" argument is zero).
Diffstat (limited to 'cord')
| -rw-r--r-- | cord/cordbscs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/cord/cordbscs.c b/cord/cordbscs.c index 2231963f..c7b3b51f 100644 --- a/cord/cordbscs.c +++ b/cord/cordbscs.c @@ -354,6 +354,7 @@ CORD CORD_substr_closure(CORD x, size_t i, size_t n, CORD_fn f) sa->sa_cord = (CordRep *)x; sa->sa_index = i; result = CORD_from_fn(f, (void *)sa, n); + if (result == CORD_EMPTY) return CORD_EMPTY; /* n == 0 */ ((CordRep *)result) -> function.header = SUBSTR_HDR; return (result); } |