Date: Tue, 20 May 2014 12:56:18 +0100 From: David Chisnall <theraven@FreeBSD.org> To: Shane Ambler <FreeBSD@ShaneWare.Biz> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: updating standard headers to meet c++11 standard Message-ID: <26E76B72-1746-48A5-B6A2-335DEDF2026C@FreeBSD.org> In-Reply-To: <537B2A57.5080801@ShaneWare.Biz> References: <537B2A57.5080801@ShaneWare.Biz>
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Hi, I thought I'd already fixed this a year or so ago. Looking at my system, I see this in cdefs.h: /* C++11 exposes a load of C99 stuff */ #if defined(__cplusplus) && __cplusplus >= 201103L #define __LONG_LONG_SUPPORTED #ifndef __STDC_LIMIT_MACROS #define __STDC_LIMIT_MACROS #endif #ifndef __STDC_CONSTANT_MACROS #define __STDC_CONSTANT_MACROS #endif #endif So, if you're compiling C++ and the C++ standard is C++11 or later, we define the __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS macros. If it's C++98, you can define them yourself. Do you have a test case where this doesn't work? David On 20 May 2014, at 11:11, Shane Ambler <FreeBSD@ShaneWare.Biz> wrote: > When including stdint.h in c++ we can #define __STDC_LIMIT_MACROS so > that we get macros like INT32_MAX defined. > > Also related is __STDC_CONSTANT_MACROS > > I have recently found that the need for these has been removed within > the c++11 standard. > > This year old bug report was to update glibc to this end - > https://sourceware.org/bugzilla/show_bug.cgi?id=15366 > > Also of note is that Apple removed the use of this macro from OSX with > the release of 10.9 over a year ago > http://www.opensource.apple.com/source/xnu/xnu-2422.1.72/EXTERNAL_HEADERS/stdint.h > > I believe as we push to use llvm's libc++ and support for c++11 we > should also make sure the rest of our sources are kept up to date as > well. > > Are there any other changes within c++11 or c++14 that we should be > looking to update? > > Shane > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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