Date: Sat, 13 Jul 2013 15:19:24 +0300 From: Pasi Parviainen <pasi.parviainen@iki.fi> To: David Chisnall <theraven@freebsd.org> Cc: Scot Hetzel <swhetzel@gmail.com>, "freebsd-standards@FreeBSD.org" <freebsd-standards@freebsd.org>, "freebsd-toolchain@FreeBSD.org" <freebsd-toolchain@freebsd.org>, Garrett Wollman <wollman@csail.mit.edu>, FreeBSD Current <freebsd-current@freebsd.org>, Bruce Evans <brde@optusnet.com.au>, Tijl Coosemans <tijl@freebsd.org> Subject: Re: CURRENT: CLANG 3.3 and -stad=c++11 and -stdlib=libc++: isnan()/isninf() oddity Message-ID: <51E145CC.8080900@iki.fi> In-Reply-To: <9B0A6D14-640E-4ADD-8E58-0B7867C7C674@FreeBSD.org> References: <20130710155809.0f589c22@thor.walstatt.dyndns.org> <CD51F125-AE9E-4461-916D-CF583002B47D@FreeBSD.org> <20130710183315.725dfde0@thor.walstatt.dyndns.org> <C8C94CF2-7D5A-471B-AD63-8E961AED6274@FreeBSD.org> <20130710203200.5359fd18@thor.walstatt.dyndns.org> <51DDC04B.6040209@FreeBSD.org> <20957.49978.73666.392417@khavrinen.csail.mit.edu> <20130711130043.R920@besplex.bde.org> <FD768A6B-8B72-44A1-BC1C-14FF44CB4643@FreeBSD.org> <20130711202908.L84170@besplex.bde.org> <C00DFA94-6182-4334-9C90-8012E576E475@FreeBSD.org> <CACdU%2Bf9RmwxSiMEjOwSXHtnDwKk4xY8fmA3aBE5mzrVUkrc1Nw@mail.gmail.com> <CACdU%2Bf-LKsHsPayUYAT-cip91O=CfQg2aJ1BKC5PRd6G9Kf28w@mail.gmail.com> <20130712234749.5afa3c9b@thor.walstatt.dyndns.org> <9B0A6D14-640E-4ADD-8E58-0B7867C7C674@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On 13.7.2013 13:12, David Chisnall wrote: > On 12 Jul 2013, at 22:47, "O. Hartmann" <ohartman@zedat.fu-berlin.de> wrote: > >> Obviously not really fixed, but even worse: >> >> if I use in C code (C99, using clang 3.3 on FreeBSD 10.0-CURRENT/amd64 >> revision 253287) isnan(x) where x is a "const double", I receive now >> the following error (which doesn't appear on previous versions): > > Thanks. This is now fixed, however the _Generic() usage that we had there is also present in tgmath.h, and so this file will also need to be fixed in the same way. > > I've now tested the macros with clang/c99, clang/c11, clang/c++98 and clang/c++11, and gcc/c89 and they all seem to work for unqualified, const, volatile, and const-volatile qualified types. > > I've added Ed to the cc: list, as he wrote this code in tgmath.h. > > David > Instead of listing all possible type qualifier combinations (like in r253319), how about using a comma operator to strip away type qualifiers? Since only the result type of the expression matters and it isn't evaluated at all. like: #define __fp_type_select(x, f, d, ld) _Generic((0,(x)), Pasi
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?51E145CC.8080900>