The following invalid code snippet causes an ICE since at least GCC 2.95.3:
================================= template<typename> void foo(); template<typename T> struct A { friend void foo<>(typename T::X); }; A<int> a; ================================= bug.cc: In instantiation of 'A<int>': bug.cc:8: instantiated from here bug.cc:5: error: 'int' is not a class, struct, or union type bug.cc:5: internal compiler error: tree check: expected function_type or method_type, have error_mark in determine_specialization, at cp/pt.c:1396 Please submit a full bug report, [etc.] Testing a patch. -- Summary: ICE with invalid friend in template class Product: gcc Version: 4.2.0 Status: UNCONFIRMED Keywords: ice-on-invalid-code, error-recovery, monitored Severity: normal Priority: P3 Component: c++ AssignedTo: reichelt at gcc dot gnu dot org ReportedBy: reichelt at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28111