write-tree: refuse to write out trees with unmerged index entries.

Of course, we can't even generate such an index yet, but give me
some time. This is a cunning plan. Let's see if it actually works.

(I feel like Wile E Coyote, waiting for the big rock to fall).

diff --git a/write-tree.c b/write-tree.c
index e2bbbd2..b58871c 100644 (file)
--- a/write-tree.c
+++ b/write-tree.c
@@ -102,11 +102,29 @@ static int write_tree(struct cache_entry **cachep, int maxentries, const char *b
 
 int main(int argc, char **argv)
 {
+       int i, unmerged;
        int entries = read_cache();
        unsigned char sha1[20];
 
        if (entries <= 0)
                die("write-tree: no cache contents to write");
+
+       /* Verify that the tree is merged */
+       unmerged = 0;
+       for (i = 0; i < entries; i++) {
+               struct cache_entry *ce = active_cache[i];
+               if (ntohs(ce->ce_flags) & ~CE_NAMEMASK) {
+                       if (++unmerged > 10) {
+                               fprintf(stderr, "...\n");
+                               break;
+                       }
+                       fprintf(stderr, "%s: unmerged (%s)\n", ce->name, sha1_to_hex(ce->sha1));
+               }
+       }
+       if (unmerged)
+               die("write-tree: not able to write tree");
+
+       /* Ok, write it out */
        if (write_tree(active_cache, entries, "", 0, sha1) != entries)
                die("write-tree: internal error");
        printf("%s\n", sha1_to_hex(sha1));