It seems that a similar idea has been applied to the Perl core for 5.11, and it'll be enabled through use 5.11;. It applies strict and warnings in a local scope instead of globally, so things that don't work with it don't break. As Rafael Garcia-Suarez points out, globally adding strict+warnings doesn't need a patch to Perl but only a source filter.

In reply to Re^4: [OT] Why I don't use Mysql for new projects (strictperl) by Corion
in thread [OT] Why I don't use Mysql for new projects by moritz

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