The following invalid code snippet triggers an ICE since GCC 3.4.0:
==================================================
template<typename class T, T = T()> struct A {};
template<int> void foo(A<int>);
==================================================
bug.cc:1: error: expected nested-name-specifier before 'class'
bug.cc:1: error: two or more data types in declaration of 'parameter'
bug.cc:1: error: 'struct T' is not a valid type for a template constant
parameter
bug.cc:3: error: type/value mismatch at argument 1 in template parameter list
for 'template<int <anonymous>, void <anonymous> > struct A'
bug.cc:3: error: expected a constant of type 'int', got 'int'
bug.cc:3: internal compiler error: in value_dependent_expression_p, at
cp/pt.c:12489
Please submit a full bug report, [etc.]
--
Summary: [4.0/4.1/4.2 regression] ICE with invalid template
parameter
Product: gcc
Version: 4.2.0
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=27668
