icemulti: Check for negative alignment exponent

2017-07-11 17:32:14 +02:00 · 2017-07-11 17:32:14 +02:00 · a9c53a32c0
parent 395b36f293
commit a9c53a32c0
1 changed files with 2 additions and 0 deletions
--- a/icemulti/icemulti.cc
+++ b/icemulti/icemulti.cc
@ -241,6 +241,8 @@ int main(int argc, char **argv)
                align_bits = strtol(optarg, &endptr, 0);
                if (*endptr != '\0')
                    error("`%s' is not a valid number\n", optarg);
+                if (align_bits < 0)
+                    error("argument to `-%c' must be non-negative\n", c);
                break;
            case 'o':
                outfile_name = optarg;