Fix twoway_merge that passed d/f conflict marker to merged_entry().

When switching from one tree to another, we should not send a
marker that says "this file does not exist in the new tree -- I
am a placeholder to tell you that, and not a real blob" down to
merged_entry() as the result of the merge.

diff --git a/unpack-trees.c b/unpack-trees.c
index 4cf83bd90a0d005f481752ef00db76668587bb50..d0367846d4d1d86a16c4c9d20dadb68fa35a94d9 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -711,12 +711,18 @@ int twoway_merge(struct cache_entry **src,
                struct unpack_trees_options *o)
 {
        struct cache_entry *current = src[0];
-       struct cache_entry *oldtree = src[1], *newtree = src[2];
+       struct cache_entry *oldtree = src[1];
+       struct cache_entry *newtree = src[2];
 
        if (o->merge_size != 2)
                return error("Cannot do a twoway merge of %d trees",
                             o->merge_size);
 
+       if (oldtree == o->df_conflict_entry)
+               oldtree = NULL;
+       if (newtree == o->df_conflict_entry)
+               newtree = NULL;
+
        if (current) {
                if ((!oldtree && !newtree) || /* 4 and 5 */
                    (!oldtree && newtree &&
@@ -724,7 +730,7 @@ int twoway_merge(struct cache_entry **src,
                    (oldtree && newtree &&
                     same(oldtree, newtree)) || /* 14 and 15 */
                    (oldtree && newtree &&
-                    !same(oldtree, newtree) && /* 18 and 19*/
+                    !same(oldtree, newtree) && /* 18 and 19 */
                     same(current, newtree))) {
                        return keep_entry(current, o);
                }