The following invalid code snippet causes an ICE on mainline:
=============================
template<int(> struct A;
=============================
bugA.cc:1: error: expected `)' before '>' token
bugA.cc:1: internal compiler error: tree check: accessed elt 1 of tree_vec with
0 elts in get_innermost_template_args, at cp/pt.c:490
Please submit a full bug report, [etc.]
A similar testcase causes an ICE in a different function:
=============================
template<typename> struct A
{
template<int(> struct B;
};
A<char> a;
=============================
bugB.cc:3: error: expected `)' before '>' token
bugB.cc: In instantiation of 'A<char>':
bugB.cc:6: instantiated from here
bugB.cc:3: internal compiler error: tree check: accessed elt 1 of tree_vec with
0 elts in add_outermost_template_args, at cp/pt.c:459
Please submit a full bug report, [etc.]
The second testcase also ICEd before GCC 3.4.0.
--
Summary: [4.2 regression] ICE on invalid template argument
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=27397
