rev-tree now handles commit problems better

This fixes possible crashes in case of broken commit tree, and makes
rev-tree die in case it cannot parse a given commit.

diff --git a/rev-tree.c b/rev-tree.c
index bfc8b12..c2909da 100644 (file)
--- a/rev-tree.c
+++ b/rev-tree.c
@@ -51,11 +51,11 @@ void process_commit(unsigned char *sha1)
        struct commit_list *parents;
        struct commit *obj = lookup_commit(sha1);
 
-       if (obj->object.parsed)
+       if (obj && obj->object.parsed)
                return;
+       if (!obj || parse_commit(obj))
+               die("unable to parse commit (%s)", sha1_to_hex(sha1));
 
-       parse_commit(obj);
-       
        parents = obj->parents;
        while (parents) {
                process_commit(parents->item->object.sha1);