https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79647
--- Comment #4 from Bernd Edlinger <bernd.edlinger at hotmail dot de> --- (In reply to Martin Sebor from comment #3) > @@ -19021,6 +19021,13 @@ > case OPT_ASYNCJOBS: > > async_jobs = atoi(opt_arg()); > + if (async_jobs < 0) { > + BIO_printf(bio_err, > + "%s: async_jobs must be non-negative\n", > + prog); > + goto opterr; > + } > + > if (!ASYNC_is_capable()) { > BIO_printf(bio_err, > "%s: async_jobs specified but async not Thanks for your suggestion, I took it verbatim and made a pull request: https://github.com/openssl/openssl/pull/2693