CL.exe exit codes

Question

Anyone know where I can get a list of CL.exe exit codes and what they mean? Google is not my friend on this and the particular code I'm getting (4) also doesn't seem to get any hits.

Although the meaning to code 4 would be nice, I'd prefer a site that actually lists them all.

Answer 1

Undocumented. But it isn't unusual for a process to return the Windows error, COM failure HRESULT or exception code. Which explains why it isn't documented.

Windows error code 4 is "Too many open files". Got deeply nested .h files or recursive #includes without a guard?