[Bug c++/31993] New: [4.3 regression] ICE with template class in variadic template class

[reichelt at gcc dot gnu dot org]

The following valid code snippet with variadic templates triggers an ICE
on mainline:

=============================================
template<typename...> struct A;

template<template<int> class... T> struct A<T<0>...>
{
  template<int> struct B {};
  B<0> b;
};
=============================================

bug.cc:6: internal compiler error: tree check: expected tree that contains
'decl non-common' structure, have 'template_template_parm' in
convert_template_argument, at cp/pt.c:4665
Please submit a full bug report, [etc.]


-- 
           Summary: [4.3 regression] ICE with template class in variadic
                    template class
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, 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=31993