There is a fascinating writeup on some problems that were caused by autoconf config file mistakes that didn't manifest themselves in gcc but showed up in the sw

There is a fascinating writeup on some problems that were caused by autoconf config file mistakes that didn't manifest themselves in gcc but showed up in the switch to clang: https://undeadly.org/cgi?action=article;sid=20170930133438 https://undeadly.org/cgi?action=article;sid=20170930133438