Hi Peter, Could you take a look at this failure? http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-debian-fast/builds/35168/steps/test/logs/stdio Dmitri -- main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if (j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/