[PATCH] Dereference tag repeatedly until we get a non-tag.
When we allow a tag object in place of a commit object, we only dereferenced the given tag once, which causes a tag that points at a tag that points at a commit to be rejected. Instead, dereference tag repeatedly until we get a non-tag. This patch makes change to two functions: - commit.c::lookup_commit_reference() is used by merge-base, rev-tree and rev-parse to convert user supplied SHA1 to that of a commit. - rev-list uses its own get_commit_reference() to do the same. Dereferencing tags this way helps both of these uses. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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committed by
Linus Torvalds

parent
a3eb250f99
commit
013aab8265
5
commit.c
5
commit.c
@ -52,8 +52,9 @@ struct commit *lookup_commit_reference(const unsigned char *sha1)
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if (!obj)
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if (!obj)
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return NULL;
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return NULL;
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if (obj->type == tag_type)
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while (obj->type == tag_type)
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obj = ((struct tag *)obj)->tagged;
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obj = parse_object(((struct tag *)obj)->tagged->sha1);
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return check_commit(obj, sha1);
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return check_commit(obj, sha1);
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}
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}
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@ -367,12 +367,12 @@ static struct commit *get_commit_reference(const char *name, unsigned int flags)
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/*
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/*
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* Tag object? Look what it points to..
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* Tag object? Look what it points to..
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*/
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*/
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if (object->type == tag_type) {
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while (object->type == tag_type) {
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struct tag *tag = (struct tag *) object;
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struct tag *tag = (struct tag *) object;
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object->flags |= flags;
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object->flags |= flags;
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if (tag_objects && !(object->flags & UNINTERESTING))
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if (tag_objects && !(object->flags & UNINTERESTING))
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add_pending_object(object, tag->tag);
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add_pending_object(object, tag->tag);
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object = tag->tagged;
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object = parse_object(tag->tagged->sha1);
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}
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}
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/*
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/*
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