The following invalid code snippet triggers an ICE on mainline: ============================================================ template<int> struct A;
struct __attribute__((unused)) A<0<; ============================================================ bug.cc:3: error: template argument 1 is invalid bug.cc:3: internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in cp_parser_elaborated_type_specifier, at cp/parser.c:10245 Please submit a full bug report, [etc.] -- Summary: [4.2 regression] ICE on attribute for invalid template 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=28269