t6023: merge-file fails to output anything for a degenerate merge

diff --git a/builtin-merge.c b/builtin-merge.c
index b280444e10d67355da6fd0d9e1a2dd2d7a29d440..370d0034ca188724344f2085c32e4150de7f9792 100644 (file)
--- a/builtin-merge.c
+++ b/builtin-merge.c
@@ -442,6 +442,8 @@ static int git_merge_config(const char *k, const char *v, void *cb)
 
                buf = xstrdup(v);
                argc = split_cmdline(buf, &argv);
+               if (argc < 0)
+                       die("Bad branch.%s.mergeoptions string", branch);
                argv = xrealloc(argv, sizeof(*argv) * (argc + 2));
                memmove(argv + 1, argv, sizeof(*argv) * (argc + 1));
                argc++;
@@ -649,12 +651,12 @@ static void add_strategies(const char *string, unsigned attr)
 static int merge_trivial(void)
 {
        unsigned char result_tree[20], result_commit[20];
-       struct commit_list *parent = xmalloc(sizeof(struct commit_list *));
+       struct commit_list *parent = xmalloc(sizeof(*parent));
 
        write_tree_trivial(result_tree);
        printf("Wonderful.\n");
        parent->item = lookup_commit(head);
-       parent->next = xmalloc(sizeof(struct commit_list *));
+       parent->next = xmalloc(sizeof(*parent->next));
        parent->next->item = remoteheads->item;
        parent->next->next = NULL;
        commit_tree(merge_msg.buf, result_tree, parent, result_commit);
@@ -701,7 +703,7 @@ static int suggest_conflicts(void)
 
        fp = fopen(git_path("MERGE_MSG"), "a");
        if (!fp)
-               die("Could open %s for writing", git_path("MERGE_MSG"));
+               die("Could not open %s for writing", git_path("MERGE_MSG"));
        fprintf(fp, "\nConflicts:\n");
        for (pos = 0; pos < active_nr; pos++) {
                struct cache_entry *ce = active_cache[pos];