[PATCH] Fix libstdc++-v3/include/math.h:66:1 2: error: 'constexpr bool std::isnan(double)' conflicts with a previous declaration

[John David Anglin]

On 2016-02-04 5:11 PM, Gerald Pfeifer wrote:
> In file included from .././../gcc-6-20160131/gcc/genautomata.c:116:0:
> /wrkdirs/usr/ports/lang/gcc6-devel/work/gcc-6-20160131/libstdc++-v3/include/c_compatibility/math.h:65:12:
> error: 'constexpr bool std::isinf(double)' conflicts with a previous declaration
>   using std::isinf;
>              ^~~~~
>
> See
> http://beefy2.nyi.freebsd.org/data/93amd64-default/408008/logs/gcc6-devel-6.0.0.s20160131.log  
> for a full log.
The checks for obsolete isinf(double) and isnan(double) are not run on 
freebsd.  Apparently,
the checks in acinclude.m4 need to be run on freebsd as well.  Maybe the 
checks should run almost
everywhere?

The problem wasn't introduced by my change but earlier by Jonathan. I 
added hpux to the list
of systems with obsolete defines.  The default is to assume there are no 
obsolete defines.

Dave

--
John David Anglin  dave.anglin@bell.net