prevent core dump when no args are given

diff --git a/util/cmisc/mkdep.c b/util/cmisc/mkdep.c
index 3826769..0fa5c7e 100644 (file)
--- a/util/cmisc/mkdep.c
+++ b/util/cmisc/mkdep.c
@@ -107,7 +107,7 @@ main(argc, argv)
        int err = 0;
 
        prog = *argv++;
-       if (**argv == '-') {
+       if (*argv && **argv == '-') {
                char *opt = &(*argv++)[1];
 
                if (*opt++ != 'd' || *opt) {