Proc module App::snippet command perl6 -Ilib ./bin/snippet cpp -c clang -r Input void func() { } int main() { std::cout << func() << std::endl; } @@CODEEND Ouput Original Code Hang on Add code after https://github.com/araraloren/perl6-app-snippet/blob/master/lib/App/snippet.pm6#L120 say $proc.exitcode; print error message raised an exception