While not very pretty, this seems to work when added at the top of the test file: 

BEGIN { $^W = 0 }

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Test::Harness lets you add command-line switches by setting the HARNESS_PERL_SWITCHES environment variable. But that doesn't work for removing the warnings, because it is just added to the existing switches.

In reply to Re^3: Who is turning $^W on? by itub
in thread Who is turning $^W on? by dragonchild

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