[Bug c++/56291] New: ICE for C++11 in output_constructor_regular_field, at varasm.c:4821

[freddie_chopin at op dot pl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56291



             Bug #: 56291

           Summary: ICE for C++11 in output_constructor_regular_field, at

                    varasm.c:4821

    Classification: Unclassified

           Product: gcc

           Version: 4.7.2

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: c++

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: freddie_cho...@op.pl





[freddie@arch ~]$ cat file.cpp

class Base

{

public:

 constexpr Base() : v(1) {};

 int v;

};



class Derived : public Base

{

public:

 constexpr Derived() : Base() {};

 virtual void function();

};



Derived d;[freddie@arch ~]$ g++ -std=c++11 -c file.cpp

file.cpp:15:10: internal compiler error: in output_constructor_regular_field,

at varasm.c:4821

Please submit a full bug report,

with preprocessed source if appropriate.

See <https://bugs.archlinux.org/> for instructions.

[freddie@arch ~]$ g++ -v

Using built-in specs.

COLLECT_GCC=g++

COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.2/lto-wrapper

Target: x86_64-unknown-linux-gnu

Configured with: /build/src/gcc-4.7.2/configure --prefix=/usr --libdir=/usr/lib

--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info

--with-bugurl=https://bugs.archlinux.org/

--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared

--enable-threads=posix --with-system-zlib --enable-__cxa_atexit

--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch

--enable-libstdcxx-time --enable-gnu-unique-object --enable-linker-build-id

--with-ppl --enable-cloog-backend=isl --disable-ppl-version-check

--disable-cloog-version-check --enable-lto --enable-gold --enable-ld=default

--enable-plugin --with-plugin-ld=ld.gold --with-linker-hash-style=gnu

--enable-multilib --disable-libssp --disable-build-with-cxx

--disable-build-poststage1-with-cxx --enable-checking=release

Thread model: posix

gcc version 4.7.2 (GCC) 



---------------



Each of the listed things makes the problem go away:

- making function() non-virtual (or removing it)

- making both or at least Derived's constructor non-constexpr

- removing the member field "v" from Base (along with the initializer in the

constructor)



I've tested with g++, x86_64-w64-mingw32-g++, i686-w64-mingw32-g++ (all on

Linux), arm-none-eabi-g++, mingw32-g++ (both on Windows), all the toolchains I

have are 4.7.2 and in each of them the problem is identical. I've also have the

same error with 4.6.2 arm-none-eabi-g++.



Is anything more needed? Maybe this is already fixed (and/or reported)?



Thx in advance!