merge script: --squash, --ff from unborn branch are errors

diff --git a/builtin/notes.c b/builtin/notes.c
index ba8fd178c8d188095e944c6a030d807d2b9f8312..190005f3cd44a35a6fffb20b1e4c74622b4d93f7 100644 (file)
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -313,7 +313,7 @@ int commit_notes(struct notes_tree *t, const char *msg)
        return 0;
 }
 
-combine_notes_fn *parse_combine_notes_fn(const char *v)
+combine_notes_fn parse_combine_notes_fn(const char *v)
 {
        if (!strcasecmp(v, "overwrite"))
                return combine_notes_overwrite;
@@ -416,7 +416,7 @@ int notes_copy_from_stdin(int force, const char *rewrite_cmd)
 {
        struct strbuf buf = STRBUF_INIT;
        struct notes_rewrite_cfg *c = NULL;
-       struct notes_tree *t;
+       struct notes_tree *t = NULL;
        int ret = 0;
 
        if (rewrite_cmd) {
@@ -614,6 +614,10 @@ static int copy(int argc, const char **argv, const char *prefix)
                }
        }
 
+       if (argc < 2) {
+               error("too few parameters");
+               usage_with_options(git_notes_copy_usage, options);
+       }
        if (2 < argc) {
                error("too many parameters");
                usage_with_options(git_notes_copy_usage, options);