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Re: GCC support for C++ noexcept
- From: Jonathan Wakely <jwakely dot gcc at gmail dot com>
- To: Jeffrey Walton <noloader at gmail dot com>
- Cc: "gcc-help at gcc dot gnu dot org" <gcc-help at gcc dot gnu dot org>
- Date: Mon, 27 Jul 2015 09:33:08 +0100
- Subject: Re: GCC support for C++ noexcept
- Authentication-results: sourceware.org; auth=none
- References: <CAH8yC8nchUG7WGQEkg-nD0jvG2sOCaZhmfUTxrVz7d=c7eZXmA at mail dot gmail dot com>
On 27 July 2015 at 02:10, Jeffrey Walton wrote:
> GCC does not appear to define __cplusplus under MinGW, so I can't
> perform the test __cpluplus >= 201103L.
It defines it unconditionally on all platforms.
> $ g++ -dM -E - < /dev/null | grep cplusplus
> $
>
> $ g++ -std=c++11 -dM -E - < /dev/null | grep cplusplus
> cc1.exe: warning: command line option '-std=c++11' is valid for
> C++/ObjC++ but not for C [enabled by default]=
This tells you you are running the C compiler not the C++ compiler.
When reading from stdin g++ doesn't set the default language to C++ (I
keep meaning to file an enhancement request in Bugzilla about this).
> How do I test for the noexcept feature?
Compile as C++ not C, using -x c++