bisect: copy filename string obtained from git_path()

Prevent the string from being overwritten by other callers of git_path() and friends before we are done using it. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Michael Haggerty committed Apr 27, 2012 at 00:26 UTC 144e7090045a703c8f5d140474f202ba4f38ac9a
1 file changed +5 -3
bisect.c
+5 -3
@@ -833,7 +833,7 @@ static int check_ancestors(const char *prefix)
833 */
834 static void check_good_are_ancestors_of_bad(const char *prefix, int no_checkout)
835 {
836 - const char *filename = git_path("BISECT_ANCESTORS_OK");
836 + char *filename = xstrdup(git_path("BISECT_ANCESTORS_OK"));
837 struct stat st;
838 int fd;
839
@@ -842,11 +842,11 @@ static void check_good_are_ancestors_of_bad(const char *prefix, int no_checkout)
842
843 /* Check if file BISECT_ANCESTORS_OK exists. */
844 if (!stat(filename, &st) && S_ISREG(st.st_mode))
845 - return;
845 + goto done;
846
847 /* Bisecting with no good rev is ok. */
848 if (good_revs.nr == 0)
849 - return;
849 + goto done;
850
851 /* Check if all good revs are ancestor of the bad rev. */
852 if (check_ancestors(prefix))
@@ -859,6 +859,8 @@ static void check_good_are_ancestors_of_bad(const char *prefix, int no_checkout)
859 filename, strerror(errno));
860 else
861 close(fd);
862 + done:
863 + free(filename);
864 }
865
866 /*