[Bug c++/61647] New: internal compiler error: in push_access_scope, at cp/pt.c:219 for a c++ header, clang++ 3.4 generate .pch without error

[blancesnow at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61647

            Bug ID: 61647
           Summary: internal compiler error: in push_access_scope, at
                    cp/pt.c:219 for a c++ header, clang++ 3.4 generate
                    .pch without error
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: blancesnow at gmail dot com

Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.9.0/configure --prefix=/usr --libdir=/usr/lib
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --disable-multilib --with-system-zlib
--enable-languages=c,c++,fortran,ada,go,java,objc,obj-c++
Thread model: posix
gcc version 4.9.0 (GCC) 
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1plus -E -quiet -v
-D_GNU_SOURCE luamm.hpp -mtune=generic -march=x86-64 -fpch-preprocess -o
luamm.ii
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../include/c++/4.9.0

/usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../include/c++/4.9.0/x86_64-unknown-linux-gnu

/usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../include/c++/4.9.0/backward
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/include
 /usr/local/include
 /usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/include-fixed

/usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../x86_64-unknown-linux-gnu/include
 /usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1plus -fpreprocessed
luamm.ii -quiet -dumpbase luamm.hpp -mtune=generic -march=x86-64 -auxbase luamm
-version -o luamm.s --output-pch=luamm.hpp.gch
GNU C++ (GCC) version 4.9.0 (x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.9.0, GMP version 5.0.2, MPFR version 3.1.0, MPC
version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++ (GCC) version 4.9.0 (x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.9.0, GMP version 5.0.2, MPFR version 3.1.0, MPC
version 0.9
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 79c268e344b7141bdf3e34d481426ed5
luamm.hpp: In member function ‘AutoCleanVariant::operator T() const’:
luamm.hpp:26:47: internal compiler error: in push_access_scope, at cp/pt.c:219
          return Variant<XX*, int>::operator T();
                                               ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

file 'luamm.ii':

# 1 "luamm.hpp"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 1 "<command-line>" 2
# 1 "luamm.hpp"
class XX;

template<typename Container, typename Key>
struct Accessor;

template<typename Container, typename Key, typename KeyStore = Key>
class Variant {
protected:
    KeyStore index;
    Container state;
public:
    Variant(Container st, const Key& i) : index(i), state(st) {}

    template<typename T>
    operator T() const {
        return Accessor<Container, KeyStore>::template get<T>(state, index);
    }
};

class AutoCleanVariant : public Variant<XX*, int> {
public:
    AutoCleanVariant(XX* st, int i) : Variant<XX*,int>(st,i) {}

    template<typename T>
    operator T() const {
         return Variant<XX*, int>::operator T();
    }
};