Hi,
While playing with git I got the following "impossible" error message:
$ git commit --amend
fatal: Ref HEAD is at 3cec3036287d6b24f7ad7f724f8bb9d4032fb1a3 but expected
3cec3036287d6b24f7ad7f724f8bb9d4032fb1a3
Since impossible things happen rarely, I was somewhat puzzled and it turned
out not to be so impossible after all, but a rather typical C bug. Since I
fixed my working directory using git-reset, I'm not sure how to verify the
code (suggestions welcome), but I'm not sure if that's important since the
code being replaced by this patch probably wasn't tested either. :/
Maybe someone could explain what might have been wrong with my work space (git
status turned up nothing wrong or missing).
-- robin
--- git-1.3.1.orig/update-ref.c 2006-04-25 08:07:54.000000000 +0200
+++ git-1.3.1/update-ref.c 2006-05-04 16:30:04.000000000 +0200
@@ -43,8 +43,13 @@
die("No such ref: %s", refname);
if (oldval) {
- if (memcmp(currsha1, oldsha1, 20))
- die("Ref %s is at %s but expected %s", refname, sha1_to_hex(currsha1), sha1_to_hex(oldsha1));
+ if (memcmp(currsha1, oldsha1, 20)) {
+ char sha1str1[41];
+ char sha1str2[41];
+ strcpy(sha1str1, sha1_to_hex(currsha1));
+ strcpy(sha1str2, sha1_to_hex(oldsha1));
+ die("Ref %s is at %s but expected %s", refname, sha1str1, sha1str2);
+ }
/* Nothing to do? */
if (!memcmp(oldsha1, sha1, 20))
exit(0);
-
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