271711b030
Recent MSVS 2017 versions (15.9.x) as well as MSVS 2019 give warning C4548 about "expression before comma having no effect" when including standard CRT headers. This happens because when building projects targeting 8.1 SDK, as the IDE uses the hard coded 10.0.240.0 version of UCRT headers in this case (see \Common7\IDE\VC\VCTargets\Microsoft.Cpp.Common.props), and the headers in this version haven't been, and will never be, updated to avoid this warning, as was done in later 10.0.x UCRT versions. Fix this by explicitly disabling the warning in wx/beforestd.h, as even setting the warning level to 1 for the standard headers somehow isn't enough to suppress it if it's enabled.
45 lines
1.9 KiB
C
45 lines
1.9 KiB
C
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/beforestd.h
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// Purpose: #include before STL headers
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 07/07/03
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// Copyright: (c) 2003 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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/**
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Unfortunately, when compiling at maximum warning level, the standard
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headers themselves may generate warnings -- and really lots of them. So
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before including them, this header should be included to temporarily
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suppress the warnings and after this the header afterstd.h should be
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included to enable them back again.
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Note that there are intentionally no inclusion guards in this file, because
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it can be included several times.
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*/
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#if defined(__VISUALC__) && __VISUALC__ >= 1910
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#pragma warning(push, 1)
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// This warning, given when a malloc.h from 10.0.240.0 version of UCRT,
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// which is used when building projects targeting 8.1 SDK, compiled by MSVS
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// 2017 or later, is still given even at warning level 1, in spite of it
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// being level 4, so we have to explicitly disable it here (as we do it
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// after the warning push pragma, it will be restored after pop).
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//
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// expression before comma has no effect; expected expression with side-effect
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#pragma warning(disable:4548)
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#endif // VC++ >= 14.1
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/**
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GCC's visibility support is broken for libstdc++ in some older versions
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(namely Debian/Ubuntu's GCC 4.1, see
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https://bugs.launchpad.net/ubuntu/+source/gcc-4.1/+bug/109262). We fix it
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here by mimicking newer versions' behaviour of using default visibility
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for libstdc++ code.
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*/
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#if defined(HAVE_VISIBILITY) && defined(HAVE_BROKEN_LIBSTDCXX_VISIBILITY)
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#pragma GCC visibility push(default)
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#endif
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