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authorJunio C Hamano <junkio@cox.net>2005-12-15 18:52:51 -0800
committerJunio C Hamano <junkio@cox.net>2005-12-15 18:52:51 -0800
commit06bf6ac4248e834a229027908d405f5e42ac96d7 (patch)
treea5783334c2818e24776b1087a97b500187a7e9a0 /refs.c
parentee34518d629331dadd58b1a75294369d679eda8b (diff)
downloadgit-06bf6ac4248e834a229027908d405f5e42ac96d7.tar.gz
git-06bf6ac4248e834a229027908d405f5e42ac96d7.tar.xz
refs.c: off-by-one fix.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'refs.c')
-rw-r--r--refs.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/refs.c b/refs.c
index b8fcb98da..69858e48c 100644
--- a/refs.c
+++ b/refs.c
@@ -346,8 +346,11 @@ int check_ref_format(const char *ref)
if (level < 2)
return -1; /* at least of form "heads/blah" */
- /* do not allow ref name to end in "HEAD" */
- if (cp - ref > 4 && !strcmp(cp - 4, "HEAD"))
+ /* Do not allow ref name to end in "HEAD"
+ * Note that cp is poiting at one past NUL at the end.
+ * i.e. cp[-1] = NUL.
+ */
+ if (5 <= cp - ref && !strcmp(cp - 5, "HEAD"))
return -1;
return 0;