I've tried on some of the systems I have at hand, and it looks like a v5.8.8 bug :

SystemPerl versioncorrect
Linux Slackware 11.0 v5.8.8 i486-linuxNo
Linux Debian Sargev5.8.4 i386-linux-thread-multiYes
Linux Debian Etchv5.8.8 i486-linux-thread-multiNo
Mac OS X 10.4v5.8.6 darwin-thread-multi-2levelYes
IRIX 6.5.22 v5.6.1 irix-n32Yes

In reply to Re: Strange warn behavior in loop by wazoox
in thread Strange warn behavior in loop by deibyz

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