Add a usage statement if an unrecognized option is given.

diff --git a/gprof/gprof.c b/gprof/gprof.c
index 6994d8f..169e2ec 100644 (file)
--- a/gprof/gprof.c
+++ b/gprof/gprof.c
@@ -111,6 +111,13 @@ main(argc, argv)
        case 'z':
            zflag = TRUE;
            break;
+       default:
+           fprintf (stderr, "usage:  gproff [-a] [-b] [-c] [-d[num]] \
+[-E function-name] [-e function-name] \
+[-F function-name] [-f function-name] \
+[-k from to] [-s] [-T] [-z] [image-file] \
+[profile file]\n");
+           exit (1);
        }
        argv++;
     }