path: root/cache.c
diff options
authorJohn Keeping <john@keeping.me.uk>2014-01-12 16:49:40 +0000
committerJason A. Donenfeld <Jason@zx2c4.com>2014-01-12 19:32:20 +0100
commit382ecf152e1bd9546f6c84ace71c62ca07f6648b (patch)
treeb3a66c0bbab90bd5bd4abf20647c5203061099a8 /cache.c
parentfilter: split filter functions into their own file (diff)
cache: don't leave cache_slot fields uninitialized
Valgrind says: ==18344== Conditional jump or move depends on uninitialised value(s) ==18344== at 0x406C83: open_slot (cache.c:63) ==18344== by 0x407478: cache_ls (cache.c:403) ==18344== by 0x404C9A: process_request (cgit.c:639) ==18344== by 0x406BD2: fill_slot (cache.c:190) ==18344== by 0x4071A0: cache_process (cache.c:284) ==18344== by 0x404461: main (cgit.c:952) ==18344== Uninitialised value was created by a stack allocation ==18344== at 0x40738B: cache_ls (cache.c:375) This is caused by the keylen field being used to calculate whether or not a slot is matched. We never then check the value of this and the length of data read depends on the key length read from the file so this isn't dangerous, but it's nice to avoid branching based on uninitialized data. Signed-off-by: John Keeping <john@keeping.me.uk>
Diffstat (limited to 'cache.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/cache.c b/cache.c
index d339435..fa83ddc 100644
--- a/cache.c
+++ b/cache.c
@@ -376,7 +376,7 @@ int cache_ls(const char *path)
DIR *dir;
struct dirent *ent;
int err = 0;
- struct cache_slot slot;
+ struct cache_slot slot = { 0 };
struct strbuf fullname = STRBUF_INIT;
size_t prefixlen;