http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51633

             Bug #: 51633
           Summary: [c++0x] [4.6/4.7 Regression] ICE with invalid
                    constexpr constructor
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: reich...@gcc.gnu.org


The following invalid code snippet triggers an ICE since GCC 4.6.0:

==========================
struct A
{
  ~A();
};

struct B
{
  A a;
  constexpr B() {}
};
==========================

bug.cc: In constructor 'constexpr B::B()':
bug.cc:9:18: internal compiler error: in
build_constexpr_constructor_member_initializers, at cp/semantics.c:5908
Please submit a full bug report, [etc.]

A slightly different code snippet triggers an ICE in a different place:

==========================
struct A
{
  constexpr A() {}
  ~A();
};

struct B
{
  A a;
  constexpr B() { return; }
};
==========================

bug.cc: In constructor 'constexpr B::B()':
bug.cc:10:27: internal compiler error: in build_data_member_initialization, at
cp/semantics.c:5782
Please submit a full bug report, [etc.]

This looks related to PR51612 where the ICE happens in the same place.

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