[Bug libstdc++/69450] [6 Regression] libstdc++-v3/include/math.h:66:1 2: error: 'constexpr bool std::isnan(double)' conflicts with a previous declaration

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69450

--- Comment #11 from John David Anglin <danglin at gcc dot gnu.org> ---
Author: danglin
Date: Thu Jan 28 13:09:23 2016
New Revision: 232925

URL: https://gcc.gnu.org/viewcvs?rev=232925&root=gcc&view=rev
Log:
        PR libstdc++/69450
        * acinclude.m4 (GLIBCXX_CHECK_MATH11_PROTO): Split check for obsolete
        isinf and isnan functions into two independent checks.  Check on hpux.
        * config.h.in: Regenerate.
        * configure: Regenerate.
        * include/c_global/cmath (isinf(double), isnan(double)): Use
        _GLIBCXX_HAVE_OBSOLETE_ISINF and _GLIBCXX_HAVE_OBSOLETE_ISNAN,
        respectively.


Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/acinclude.m4
    trunk/libstdc++-v3/config.h.in
    trunk/libstdc++-v3/configure
    trunk/libstdc++-v3/include/c_global/cmath