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Re: [patch testsuite gcc.dg]: Turn of ms-extensions for mingw target

From: Jason Merrill <jason at redhat dot com>
To: Joseph Myers <joseph at codesourcery dot com>, Kai Tietz <ktietz70 at googlemail dot com>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Wed, 03 Dec 2014 12:23:32 -0500
Subject: Re: [patch testsuite gcc.dg]: Turn of ms-extensions for mingw target
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References: <CAEwic4azzVr9MVpoKp_P-bVSju5DLbE2mfNC4SBzOaYT6DDxYg at mail dot gmail dot com> <alpine dot DEB dot 2 dot 10 dot 1411281748310 dot 18562 at digraph dot polyomino dot org dot uk> <CAEwic4Yz4DAeHqJZVLrB4WtCHOvD78ctNtgXth+h0VSPFaxrKw at mail dot gmail dot com> <alpine dot DEB dot 2 dot 10 dot 1411281807040 dot 18562 at digraph dot polyomino dot org dot uk> <CAEwic4Ya-9MKpKYr_dAW4NwH=L+n53zvJW1a6FUayeTf+Vs70w at mail dot gmail dot com> <alpine dot DEB dot 2 dot 10 dot 1411282025380 dot 30652 at digraph dot polyomino dot org dot uk>

On 11/28/2014 03:35 PM, Joseph Myers wrote:

If you find you need -fno-ms-extensions as well, that's not a bug in the
documentation or the testcase, it's a bug in GCC, failing to give a
diagnostic for certain code for certain targets even though the standard
requires it to do so.  The testcase has shown up that GCC is behaving
incorrectly - it's done what testcases are meant to do.  Rather than
making the testcase incorrect to match the bug, you should fix the bug.

I agree, with -pedantic we should complain about use of MS extensionsoutside of system headers even if we then proceed to compile the program.


Jason

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