I wondered what in "use strict" might have caused a failed system call

Maybe you know this also but your quest for a failed system call suggests that maybe you don't or that there might be some confusion...

The fact that $! is non-zero is not an indication that any system call failed. If you know that the last system call failed then the value of $! has meaning, otherwise its value doesn't mean anything at all.

In reply to Re^3: "use strict" sets $! by ig
in thread "use strict" sets $! by rovf

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