The following invalid code snippet triggers an ICE on mainline:
============================================================
template <typename... T> struct A
{
static T &t;
static const int i = sizeof(++t);
};
int x[A<int>::i];
============================================================
bug.cc:3: error: parameter packs not expanded with `...':
bug.cc:3: note: 'T'
bug.cc: In instantiation of 'const int A<int>::i':
bug.cc:7: instantiated from here
bug.cc:4: error: invalid use of template type parameter 'T'
bug.cc:4: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in get_unwidened, at tree.c:5887
Please submit a full bug report, [etc.]
--
Summary: [4.3 regression] ICE on invalid use of parameter pack
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=32567
