Date: Fri, 26 Jul 2013 11:51:43 +0100 From: David Chisnall <theraven@FreeBSD.org> To: Tijl Coosemans <tijl@coosemans.org> Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: svn commit: r253563 - head/contrib/libstdc++/include/c_std Message-ID: <B2D786F9-E807-4F9D-89BA-A2B244B87C99@FreeBSD.org> In-Reply-To: <20130726122654.19448832@kalimero.tijl.coosemans.org> References: <201307231023.r6NANhGf065713@svn.freebsd.org> <20130725201948.2f5ae808@kalimero.tijl.coosemans.org> <7D9DA326-0F32-44D2-92F9-EED0751F9AE0@FreeBSD.org> <20130726122654.19448832@kalimero.tijl.coosemans.org>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] On 26 Jul 2013, at 11:26, Tijl Coosemans <tijl@coosemans.org> wrote: > On Fri, 26 Jul 2013 10:43:07 +0100 David Chisnall wrote: >> On 25 Jul 2013, at 19:19, Tijl Coosemans <tijl@coosemans.org> wrote: >>> This also >>> broke compilation of C code with -D_XOPEN_SOURCE=500. >> >> Do you have a test case for this? > > % cc -c test.c -D_XOPEN_SOURCE=500 -Wall -std=gnu89 > test.c:5:10: warning: implicit declaration of function 'isnan' > [-Wimplicit-function-declaration] > return( isnan( d )); > ^ > 1 warning generated. > > The isnan function is part of SUSv2: > http://pubs.opengroup.org/onlinepubs/7990989775/xsh/isnan.html > > _XOPEN_SOURCE is handled in sys/cdefs.h. It sets the following macros: > #define __XSI_VISIBLE 500 > #define __POSIX_VISIBLE 199506 > #define __ISO_C_VISIBLE 1990 So, isnan and isinf should be visible in functions when in __ISO_C_VISIBLE < 1999 and __XSI_VISIBLE < 600, and __XSI_VISIBLE >= 500? David [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.18 (Darwin) Comment: GPGTools - http://gpgtools.org iQIcBAEBAgAGBQJR8lTAAAoJEKx65DEEsqIdFyMQAJhOBfXumc2WG7MhHwFZZhAz 1Ue2dFCvFMQWhG+tI++XrL2B8GyN/Tk2HEbLbohxfMlOEzJmsxWFF92xnOQyZ5kF We2ACKUKRVtsB5SvmudZJWuqhahJSi++95D8D+Tballi08LSugpTSfgCsEV7TfqN AtKYLYd4Ao9F1xZBQ1Mcr0EcayKh40/2QkOSaKgXzWl6obaT40i4tie/EVgvGCJv VGGR1gNkZN1aXAsVJMNh1gIqKgL954Nq2z8pqAGmP+kvy1sdp6KgUIUnxN3hEC8B WjMJKgZijDgM7MXj+iVOhXS0XTtenHB51MxBr/l6GHpkd3Pnc+RwERDXdZHVQW3m 5KfYoYBnYPvnoT5uGTrYKMmboqBVeme4QZek5svEosOtiRnc6pks5KS6e4seXtCw 70oclQj92xxMqYNkiohyctpcpSIMaByn+/+91B8PLPsBzfVsjftopuuFnFNJXmyt 0SWnTnQqHWJN/XShTqSzGxKYiLlFosKKyhJBZESX0CwsfEgCCTHPBvClvv9I6HIB z8CEtJGT+CmR48X95GwgdkHnr7bRzp6uaKK6qhT2ggHviAk9JXGBNFQk5a6VI52w OFbotnMYj3UnqNvrZo9u3ERSQ+8+Ukiwrnmngjp72GEFYYsj02ZWT6AOfpZnmUO5 Hhj26Ipe1e8zX1ZwBWGx =Sh4z -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?B2D786F9-E807-4F9D-89BA-A2B244B87C99>