blame, line-log: do not loop around deref_tag()

These callers appear to expect that deref_tag() is to peel one layer
of a tag, but the function does not work that way; it has its own
loop to unwrap tags until an object that is not a tag appears.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/blame.c b/builtin/blame.c
index 048ed53..0136dfc 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -2400,8 +2400,7 @@ static char *prepare_final(struct scoreboard *sb)
                struct object *obj = revs->pending.objects[i].item;
                if (obj->flags & UNINTERESTING)
                        continue;
-               while (obj->type == OBJ_TAG)
-                       obj = deref_tag(obj, NULL, 0);
+               obj = deref_tag(obj, NULL, 0);
                if (obj->type != OBJ_COMMIT)
                        die("Non commit %s?", revs->pending.objects[i].name);
                if (sb->final)
@@ -2428,8 +2427,7 @@ static char *prepare_initial(struct scoreboard *sb)
                struct object *obj = revs->pending.objects[i].item;
                if (!(obj->flags & UNINTERESTING))
                        continue;
-               while (obj->type == OBJ_TAG)
-                       obj = deref_tag(obj, NULL, 0);
+               obj = deref_tag(obj, NULL, 0);
                if (obj->type != OBJ_COMMIT)
                        die("Non commit %s?", revs->pending.objects[i].name);
                if (sb->final)

diff --git a/line-log.c b/line-log.c
index 626b22c..2aa33be 100644 (file)
--- a/line-log.c
+++ b/line-log.c
@@ -479,8 +479,7 @@ static struct commit *check_single_commit(struct rev_info *revs)
                struct object *obj = revs->pending.objects[i].item;
                if (obj->flags & UNINTERESTING)
                        continue;
-               while (obj->type == OBJ_TAG)
-                       obj = deref_tag(obj, NULL, 0);
+               obj = deref_tag(obj, NULL, 0);
                if (obj->type != OBJ_COMMIT)
                        die("Non commit %s?", revs->pending.objects[i].name);
                if (commit)