On Wed, Dec 30, 2015 at 01:28:06PM +0100, Dennis Kaarsemaker wrote:
> On wo, 2015-12-30 at 18:28 +0700, Duy Nguyen wrote:
> > On Wed, Dec 30, 2015 at 6:26 PM, Duy Nguyen <pclo...@gmail.com>
> > wrote:
> > > On Wed, Dec 30, 2015 at 6:17 PM, Dennis Kaarsemaker
> > > <den...@kaarsemaker.net> wrote:
> > >> On wo, 2015-12-30 at 10:24 +0100, Dennis Kaarsemaker wrote:
> > >>> spirit:~/code/git (master)$ cat .git/logs/HEAD
> > >>> 2635c2b8bfc9aec07b7f023d8e3b3d02df715344
> > 54bc41416c5d3ecb978acb0df80d57aa3e54494c Dennis Kaarsemaker <
> > den...@kaarsemaker.net> 1446765642 +0100
> > >>> 74c855f87d25a5b5c12d0485ec77c785a1c734c5
> > 54bc41416c5d3ecb978acb0df80d57aa3e54494c Dennis Kaarsemaker <
> > den...@kaarsemaker.net> 1446765951 +0100 checkout: moving from
> > 3c3d3f629a6176b401ebec455c5dd59ed1b5f910 to master
> >
> > Ah... I came from a different angle and did not realize the tag sha1
> > is from your reflog. So yeah maybe reflog parsing code should check
> > object type first, don't assume it's a commit!
>
> Something like this perhaps?
>
> diff --git a/reflog-walk.c b/reflog-walk.c
> index 85b8a54..cd538dd 100644
> --- a/reflog-walk.c
> +++ b/reflog-walk.c
> @@ -25,6 +25,14 @@ static int read_one_reflog(unsigned char *osha1, unsigned
> char *nsha1,
> {
> struct complete_reflogs *array = cb_data;
> struct reflog_info *item;
> + struct object *obj;
> +
> + obj = parse_object(osha1);
> + if(obj && obj->type != OBJ_COMMIT)
> + die(_("Broken reflog, %s is a %s, not a commit"),
> sha1_to_hex(obj->oid.hash), typename(obj->type));
> + obj = parse_object(nsha1);
> + if(obj && obj->type != OBJ_COMMIT)
> + die(_("Broken reflog, %s is a %s, not a commit"),
> sha1_to_hex(obj->oid.hash), typename(obj->type));
>
> ALLOC_GROW(array->items, array->nr + 1, array->alloc);
> item = array->items + array->nr;
>
> That gives me:
> fatal: Broken reflog, 74c855f87d25a5b5c12d0485ec77c785a1c734c5 is a tag, not
> a commit
I would go with something like this. The typecasting to "struct commit
*" is the bug because parse_object() can return any object type. With
this I got
error: object 74c855f87d25a5b5c12d0485ec77c785a1c734c5 is a tag, not a commit
diff --git a/reflog-walk.c b/reflog-walk.c
index 85b8a54..09d18fa 100644
--- a/reflog-walk.c
+++ b/reflog-walk.c
@@ -236,8 +236,9 @@ void fake_reflog_parent(struct reflog_walk_info *info,
struct commit *commit)
reflog = &commit_reflog->reflogs->items[commit_reflog->recno];
info->last_commit_reflog = commit_reflog;
commit_reflog->recno--;
- commit_info->commit = (struct commit *)parse_object(reflog->osha1);
- if (!commit_info->commit) {
+ commit_info->commit = lookup_commit(reflog->osha1);
+ if (!commit_info->commit ||
+ parse_commit(commit_info->commit)) {
commit->parents = NULL;
return;
}
--
Duy
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