crepl | simple REPL | Code Editor library

The Segmentation fault (core dumped) message you sometimes see in the terminal is not produced by the process you launch but by the shell that launched this process.

When it launches a process, the shell waits for it with a system call similar to man 3 waitpid. Such a system-call tells if the process exited successfully (with return or _exit()) or was killed by a signal. In this last case, the shell displays a message specific to the signal that caused the early termination (man 3 strsignal).

In your specific case, this is not the shell that launches the process you wrote in C, but the perl interpreter. Your process being killed does not make perl be killed too, so your shell does not display such a message.

I cannot write perl but I'm certain that you can replace system $compiled_code; by something that does the equivalent of fork()/exec()/waitpid()/strsignal().

Using the end of this page, I think you can try this at the end of your script.