The following invalid code snippet triggers an ICE on mainline:
=====================================================================
template <typename...T> struct A
{
typedef T X;
};
A<int> a;
=====================================================================
bug.cc:3: error: parameter packs not expanded with `...':
bug.cc:3: note: 'T'
bug.cc:3: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in handle_vector_size_attribute, at c-common.c:6039
Please submit a full bug report, [etc.]
The testcase didn't crash before 2007-11-03, so it's probably fallout from
http://gcc.gnu.org/ml/gcc-cvs/2007-11/msg00120.html
--
Summary: [4.3 regression] ICE with variadic template and typedef
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=34058
