Compiler return codes

At the end of compilation, the compiler sets the return code to zero when no messages are issued.

Otherwise, the compiler sets the return code to one of the following values:

Return code	Error type
1	Any error with a severity level higher than the setting of the -qhalt compiler option has been detected.
40	An option error or an unrecoverable error has been detected.
41	A configuration file error has been detected.
249	A no-files-specified error has been detected.
250	An out-of-memory error has been detected. The compiler cannot allocate any more memory for its use.
251	A signal-received error has been detected. That is, an unrecoverable error or interrupt signal has occurred.
252	A file-not-found error has been detected.
253	An input/output error has been detected: files cannot be read or written to.
254	A fork error has been detected. A new process cannot be created.
255	An error has been detected while the process was running.

Note: Return codes can also be displayed for runtime errors.