Add a missing sanity check on startup to disallow the use of increment

in combination with -s and -l
Fixes hashcat#8

CHANGES

@@ -1,8 +1,12 @@
-* v0.72 -> v0.73:
-
-- Open Source the project
-- License is MIT
-- Moved repository to github: https://github.com/jsteube/maskprocessor
-- Added CHANGES
-- Added LICENSE
-- Added README.md
+* v0.73 -> xxx:
+
+- Add a missing sanity check on startup to disallow the use of increment in combination with -s and -l
+
+* v0.72 -> v0.73:
+
+- Open Source the project
+- License is MIT
+- Moved repository to github: https://github.com/jsteube/maskprocessor
+- Added CHANGES
+- Added LICENSE
+- Added README.md

src/mp.c

@@ -490,6 +490,20 @@ int main (int argc, char *argv[])
     return (-1);
   }
 
+  if (increment && start_at)
+  {
+    fprintf (stderr, "--increment can not be used with --start-at\n");
+
+    return (-1);
+  }
+
+  if (increment && stop_at)
+  {
+    fprintf (stderr, "--increment can not be used with --stop-at\n");
+
+    return (-1);
+  }
+
   /* buffers */
 
   char *mp_sys[6];