parse_options(): Avoid passing NULL as a string arg to fprintf

14 years ago · f6d28cf029
parent f925b24381
commit f6d28cf029
1 changed files with 1 additions and 1 deletions
--- a/cmdutils.c
+++ b/cmdutils.c
@ -281,7 +281,7 @@ unknown_opt:
                *po->u.float_arg = parse_number_or_die(opt, arg, OPT_FLOAT, -INFINITY, INFINITY);
            } else if (po->u.func_arg) {
                if (po->u.func_arg(opt, arg) < 0) {
-                    fprintf(stderr, "%s: failed to set value '%s' for option '%s'\n", argv[0], arg, opt);
+                    fprintf(stderr, "%s: failed to set value '%s' for option '%s'\n", argv[0], arg ? arg : "[null]", opt);
                    exit(1);
                }
            }