[Bug c++/60064] New: [c++1y] ICE with auto as parameter of friend function

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60064

            Bug ID: 60064
           Summary: [c++1y] ICE with auto as parameter of friend function
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org

The following valid code snippet (compiled with "-std=c++1y") triggers an ICE
on trunk:

===========================================
struct A
{
  friend void foo(auto) {}
};
===========================================

bug.cc:4:1: internal compiler error: in poplevel_class, at
cp/name-lookup.c:2951
 };
 ^
0x77ff17 poplevel_class()
        ../../gcc/gcc/cp/name-lookup.c:2951
0x665008 popclass()
        ../../gcc/gcc/cp/class.c:7127
0x679edd finish_struct(tree_node*, tree_node*)
        ../../gcc/gcc/cp/class.c:6808
0x6ac14a cp_parser_class_specifier_1
        ../../gcc/gcc/cp/parser.c:19218
0x6ac14a cp_parser_class_specifier
        ../../gcc/gcc/cp/parser.c:19437
0x6ac14a cp_parser_type_specifier
        ../../gcc/gcc/cp/parser.c:14302
0x6c5540 cp_parser_decl_specifier_seq
        ../../gcc/gcc/cp/parser.c:11547
0x6cc139 cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:11137
0x6af5f3 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:11086
0x6d68f2 cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10983
0x6d55e8 cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10869
0x6d6eca cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:4014
0x6d6eca c_parse_file()
        ../../gcc/gcc/cp/parser.c:31528
0x7f6973 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1060
Please submit a full bug report, [etc.]