[Bug middle-end/79647] bogus warning when building openssl

[bernd.edlinger at hotmail dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79647

--- Comment #5 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
When I tried to limit the memory allocation to reasonable size,
I triggered the warning again, with this modified check:

@@ -1393,6 +1393,12 @@ int speed_main(int argc, char **argv)
                            prog);
                 goto opterr;
             }
+            if (async_jobs < 0 || async_jobs > 99999) {
+                BIO_printf(bio_err,
+                           "%s: too many async_jobs\n",
+                           prog);
+                goto opterr;
+            }
 #endif
             break;
         case OPT_MISALIGN:

Why is it not clear that async_jobs can't be negative?