Check type of -V option to be a number

diff --git a/drill/drill.c b/drill/drill.c
index abd0ff630038a4166f5a055b0eb33ea66d83fcff..9077cd69bfb33fa6e6449efde0acc88e5ac68b33 100644 (file)
--- a/drill/drill.c
+++ b/drill/drill.c
@@ -221,6 +221,10 @@ main(int argc, char *argv[])
                                break;
 #endif /* HAVE_SSL */
                        case 'V':
+                               if (strtok(optarg, "0123456789") != NULL) {
+                                       fprintf(stderr, "-V expects an number as an argument.\n");
+                                       exit(EXIT_FAILURE);
+                               }
                                verbosity = atoi(optarg);
                                break;
                        case 'Q':