[Bug c++/50473] New: [C++0x] ICE in type_has_nontrivial_copy_init, at cp/tree.c:2574

["y121516 at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50473

             Bug #: 50473
           Summary: [C++0x] ICE in type_has_nontrivial_copy_init, at
                    cp/tree.c:2574
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: y121516@gmail.com


ICE occured.

Codes (a.cpp):

template<unsigned N>
struct s
{};

template<class... Ts>
constexpr s<sizeof...(Ts)> f()
{
 return {};
}

template<class T>
struct test
{
 static constexpr auto&& value = f();
};

int main(){}


Compile error messages:

$ g++4.7 -std=c++0x -Wall -Wextra -pedantic a.cpp
a.cpp:14:36: internal compiler error: in type_has_nontrivial_copy_init, at
cp/tree.c:2574
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


Vesion info:

$ g++4.7 -v
Built by Equation Solution <http://www.Equation.com>.
Using built-in specs.
COLLECT_GCC=C:\cygwin\home\RiSK\misc\gcc4.7\bin\g++.exe
COLLECT_LTO_WRAPPER=c:/cygwin/home/risk/misc/gcc4.7/bin/../libexec/gcc/i686-pc-mingw32/4.7.0/lto-wrapper.exe
Target: i686-pc-mingw32
Configured with: ../gcc-4.7-20110917-mingw/configure --host=i686-pc-mingw32
--build=x86_64-unknown-linux-gnu --target
=i686-pc-mingw32
--prefix=/home/gfortran/gcc-home/binary/mingw32/native/x86_32/gcc/4.7-20110917
--with-gcc --with-gnu
-as --with-gnu-ld --with-host-libstdcxx='-lstdc++ -lsupc++ -lm'
--with-ppl=/home/gfortran/gcc-home/binary/mingw32/nat
ive/x86_32/ppl
--with-cloog=/home/gfortran/gcc-home/binary/mingw32/native/x86_32/cloog
--with-gmp=/home/gfortran/gcc-
home/binary/mingw32/native/x86_32/gmp
--with-mpfr=/home/gfortran/gcc-home/binary/mingw32/native/x86_32/mpfr --with-mp
c=/home/gfortran/gcc-home/binary/mingw32/native/x86_32/mpc
--with-sysroot=/home/gfortran/gcc-home/binary/mingw32/cros
s/x86_32/gcc/4.7-20110917 --disable-shared --disable-nls --disable-tls
--disable-win32-registry --enable-libquadmath-
support --enable-libquadmath --enable-languages=c,c++,fortran --enable-libgomp
--enable-threads=win32 --enable-lto --
enable-static --enable-shared=lto-plugin --enable-plugins --enable-ld=yes
--enable-cloog-backend=ppl
Thread model: win32
gcc version 4.7.0 20110917 (experimental) (GCC)