[Bug other/63505] New: [4.8/4.9 Regression] ICE with -fdebug-types-section in should_move_die_to_comdat, at dwarf2out.c:6702

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63505

            Bug ID: 63505
           Summary: [4.8/4.9 Regression] ICE with -fdebug-types-section in
                    should_move_die_to_comdat, at dwarf2out.c:6702
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org

this might be related to PR57664 and/or PR53860 (but the latter was closed),
seen on today's 4.8 and 4.9 branches, but not on trunk.

test case reduced from https://bugs.debian.org/764624

$ cat test.cc
template <typename _Predicate> struct A {
  _Predicate _M_pred;
  template <typename _Iterator> bool operator()(_Iterator) { return _M_pred; }
};
template <typename _Predicate> A<_Predicate> __pred_iter(_Predicate) {}

class B {
public:
  int begin();
  int end();
};
template <typename _ForwardIterator, typename _Predicate>
void __remove_if(_ForwardIterator, _Predicate p2) {
  _ForwardIterator __first;
  p2(__first);
}

template <typename _ForwardIterator, typename _Predicate>
void remove_if(_ForwardIterator, _ForwardIterator p2, _Predicate p3) {
  __remove_if(p2, __pred_iter(p3));
}

void tidy_container() {
  B env_container;
  if (false)
    remove_if(env_container.begin(), env_container.end(), [] {});
}

$ g++ -std=gnu++0x -c -g -fdebug-types-section test.cc 
test.cc:27:1: internal compiler error: in should_move_die_to_comdat, at
dwarf2out.c:6702
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.