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How do I temporarily block warnings?

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How do I temporarily block warnings?

The $^W variable (documented in the perlvar manpage) controls runtime warnings for a block:

    {
        local $^W = 0;        # temporarily turn off warnings
        $a = $b + $c;         # I know these might be undef
    }

Note that like all the punctuation variables, you cannot currently use my() on $^W, only local().

A new use warnings pragma is in the works to provide finer control over all this. The curious should check the perl5-porters mailing list archives for details.

Source: Perl FAQ: Perl Language Issues
Copyright: Copyright (c) 1997 Tom Christiansen and Nathan Torkington.

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