builtin-blame: Fix blame -C -C with submodules.

When performing copy detection, git-blame tries to
read gitlinks as blobs, which causes it to die.

This patch adds a check to skip them.

Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

diff --git a/builtin-blame.c b/builtin-blame.c
index 9bc901c2922403dcf73c8275da73d6d37d220729..101c4162dad22db14ac87257b53496ec558137aa 100644 (file)
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -1136,6 +1136,8 @@ static int find_copy_in_parent(struct scoreboard *sb,
 
                        if (!DIFF_FILE_VALID(p->one))
                                continue; /* does not exist in parent */
+                       if (S_ISGITLINK(p->one->mode))
+                               continue; /* ignore git links */
                        if (porigin && !strcmp(p->one->path, porigin->path))
                                /* find_move already dealt with this path */
                                continue;