[Bug c++/32253] New: [4.3 regression] ICE with variadic templates and function pointers

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

The following invalid code snippet triggers an ICE on mainline:

==================================================
template<void (*... fp)()> struct A
{
  A() { fp(); }
};

void foo();

A<foo> a;
==================================================

bug.cc: In constructor 'A<fp>::A()':
bug.cc:3: error: parameter packs not expanded with `...':
bug.cc:3: note:         'fp'
bug.cc: In constructor 'A<fp>::A() [with void (* fp)() = foo]':
bug.cc:8:   instantiated from here
bug.cc:3: internal compiler error: in gimplify_expr, at gimplify.c:5961
Please submit a full bug report, [etc.]


-- 
           Summary: [4.3 regression] ICE with variadic templates and
                    function pointers
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32253