[Bug libstdc++/85672] New: error: redefinition of 'constexpr long double std::abs(long double)'

["danglin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85672

            Bug ID: 85672
           Summary: error: redefinition of 'constexpr long double
                    std::abs(long double)'
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: danglin at gcc dot gnu.org
  Target Milestone: ---
              Host: hppa2.0w-hp-hpux11.11
            Target: hppa2.0w-hp-hpux11.11
             Build: hppa2.0w-hp-hpux11.11

libtool: compile:  /test/gnu/gcc/objdir/./gcc/xgcc -shared-libgcc
-B/test/gnu/gc
c/objdir/./gcc -nostdinc++
-L/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc+
+-v3/src -L/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/src/.libs
-L/
test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/libsupc++/.libs
-B/opt/gn
u/gcc/gcc-9/hppa2.0w-hp-hpux11.11/bin/
-B/opt/gnu/gcc/gcc-9/hppa2.0w-hp-hpux11.1
1/lib/ -isystem /opt/gnu/gcc/gcc-9/hppa2.0w-hp-hpux11.11/include -isystem
/opt/g
nu/gcc/gcc-9/hppa2.0w-hp-hpux11.11/sys-include -fno-checking
-I/test/gnu/gcc/gcc
/libstdc++-v3/../libgcc
-I/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v
3/include/hppa2.0w-hp-hpux11.11
-I/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/lib
stdc++-v3/include -I/test/gnu/gcc/gcc/libstdc++-v3/libsupc++ -D_GLIBCXX_SHARED
-
fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi
-fdiagnos
tics-show-location=once -frandom-seed=atexit_thread.lo -g -O2 -c
../../../../gcc
/libstdc++-v3/libsupc++/atexit_thread.cc  -fPIC -DPIC -D_GLIBCXX_SHARED -o
atexi
t_thread.o
In file included from
/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/cstdlib:77,
                 from
../../../../gcc/libstdc++-v3/libsupc++/atexit_thread.cc:25:
/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/bits/std_abs.h:102:3:
error: redefinition of 'constexpr long double std::abs(long double)'
   abs(__float128 __x)
   ^~~
/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/bits/std_abs.h:78:3:
note: 'constexpr long double std::abs(long double)' previously defined here
   abs(long double __x)
   ^~~
In file included from
/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/bits/move.h:55,
                 from
/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/bits/nested_exception.h:40,
                 from /test/gnu/gcc/gcc/libstdc++-v3/libsupc++/exception:144,
                 from /test/gnu/gcc/gcc/libstdc++-v3/libsupc++/new:40,
                 from
../../../../gcc/libstdc++-v3/libsupc++/atexit_thread.cc:26:
/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/type_traits:347:12:
error: redefinition of 'struct std::__is_floating_point_helper<long double>'
     struct __is_floating_point_helper<__float128>
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/type_traits:342:12:
note: previous definition of 'struct std::__is_floating_point_helper<long
double>'
     struct __is_floating_point_helper<long double>
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~