The following invalid testcase causes an ICE since GCC 3.1:
========================================
template<int, int = 0> struct A;
template<int> struct A
{
A();
};
A<0> a;
========================================
bug.cc:1: error: previous declaration 'template<int <anonymous>, int
<anonymous> > struct A'
bug.cc:3: error: used 2 template parameter(s) instead of 1
bug.cc: In constructor 'A<<anonymous>, <anonymous> >::A() [with int <anonymous>
= 0]':
bug.cc:8: instantiated from here
bug.cc:5: internal compiler error: tree check: accessed elt 2 of tree_vec with
1 elts in tsubst, at cp/pt.c:7080
Please submit a full bug report, [etc.]
--
Summary: [4.0/4.1/4.2 regression] ICE with wrong number of
template parameters
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-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=26938
