merge-file: handle empty files gracefully

diff --git a/unpack-trees.c b/unpack-trees.c
index c527d7d049155d1808e0bf69aba42d49cea7b68f..aa2513ed798969c02fc5e14097666eb4c4c02bae 100644 (file)
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -71,12 +71,8 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
        int remove;
        int baselen = strlen(base);
        int src_size = len + 1;
-       int i_stk = i_stk;
        int retval = 0;
 
-       if (o->dir)
-               i_stk = push_exclude_per_directory(o->dir, base, strlen(base));
-
        do {
                int i;
                const char *first;
@@ -255,8 +251,6 @@ static int unpack_trees_rec(struct tree_entry_list **posns, int len,
        } while (1);
 
  leave_directory:
-       if (o->dir)
-               pop_exclude_per_directory(o->dir, i_stk);
        return retval;
 }
 
@@ -404,7 +398,7 @@ static void verify_uptodate(struct cache_entry *ce,
                return;
 
        if (!lstat(ce->name, &st)) {
-               unsigned changed = ce_match_stat(ce, &st, 1);
+               unsigned changed = ce_match_stat(ce, &st, CE_MATCH_IGNORE_VALID);
                if (!changed)
                        return;
                /*
@@ -596,7 +590,7 @@ static int merged_entry(struct cache_entry *merge, struct cache_entry *old,
                 * a match.
                 */
                if (same(old, merge)) {
-                       *merge = *old;
+                       memcpy(merge, old, offsetof(struct cache_entry, name));
                } else {
                        verify_uptodate(old, o);
                        invalidate_ce_path(old);
@@ -925,7 +919,7 @@ int oneway_merge(struct cache_entry **src,
                if (o->reset) {
                        struct stat st;
                        if (lstat(old->name, &st) ||
-                           ce_match_stat(old, &st, 1))
+                           ce_match_stat(old, &st, CE_MATCH_IGNORE_VALID))
                                old->ce_flags |= htons(CE_UPDATE);
                }
                return keep_entry(old, o);