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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Preventing warnings in FIXNUM_OVERFLOW_P
Date: Fri, 19 Jan 2007 21:10:44 -0500
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    > I say let's leave my workaround alone until the GCC developers move
    > this warning into -Wextra.  When that version of GCC becomes
    > widespread, we can remove the workaround.

    Agreed,

That is a bad solution.  Turning off this warning globally risks
missing other places where there is a real problem.  The right
solution is a way to turn off the warning _only in this construct_.