do not overwrite files in leading path

diff --git a/builtin/revert.c b/builtin/revert.c
index 4b47ace36b51566acb5b748f679070f02cbbf568..57b51e4a0e148062e1945d640b81559d65e4c2ba 100644 (file)
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -442,7 +442,7 @@ static int do_pick_commit(void)
        else
                parent = commit->parents->item;
 
-       if (allow_ff && !hashcmp(parent->object.sha1, head))
+       if (allow_ff && parent && !hashcmp(parent->object.sha1, head))
                return fast_forward_to(commit->object.sha1, head);
 
        if (parent && parse_commit(parent) < 0)