Don't dereference a strdup-returned NULL

[git.git] / builtin-diff-index.c

diff --git a/builtin-diff-index.c b/builtin-diff-index.c
index 083599d5c4c174cfab7c148428630534e4cd8174..81e7167438ecfc25a6f9a317af663034d653588e 100644 (file)
--- a/builtin-diff-index.c
+++ b/builtin-diff-index.c
@@ -14,6 +14,7 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
        struct rev_info rev;
        int cached = 0;
        int i;
+       int result;
 
        init_revisions(&rev, prefix);
        git_config(git_default_config); /* no "diff" UI options */
@@ -22,7 +23,7 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
        argc = setup_revisions(argc, argv, &rev, NULL);
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
-                       
+
                if (!strcmp(arg, "--cached"))
                        cached = 1;
                else
@@ -42,5 +43,6 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
                perror("read_cache");
                return -1;
        }
-       return run_diff_index(&rev, cached);
+       result = run_diff_index(&rev, cached);
+       return rev.diffopt.exit_with_status ? rev.diffopt.has_changes: result;
 }