protect against empty -N command-line argument

2011-03-29 11:12:07 -06:00 · 2011-03-29 11:12:07 -06:00 · 05b777d382
commit 05b777d382
parent 0839f763ec
1 changed files with 6 additions and 0 deletions
--- a/src/racket/cmdline.inc
+++ b/src/racket/cmdline.inc
@ -979,6 +979,12 @@ static int run_from_cmd_line(int argc, char *_argv[],
 	  argv++;
 	  --argc;
 	  sprog = argv[0];
+          if (!*sprog) {
+            PRINTF("%s: empty path after %s switch\n", 
+		   prog, 
+		   real_switch);
+	    goto show_need_help;
+          }
          was_config_flag = 1;
 	  break;
 	case 'q':