[Bug c++/58548] New: ICE with local struct in function with auto parameter

["reichelt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58548

            Bug ID: 58548
           Summary: ICE with local struct in function with auto parameter
           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 code snippet triggers an ICE on trunk (4.9.0 20130926) when
compiled with "-std=gnu++1y":

===========================
void foo(auto)
{
  struct A { int i; };
}
===========================

bug.cc: In function 'void foo(<auto1>)':
bug.cc:3:18: error: data member 'i' cannot be a member template
   struct A { int i; };
                  ^
neu40.cc:6:18: internal compiler error: in poplevel, at cp/decl.c:560
0x554850 poplevel(int, int, int)
        ../../gcc/gcc/cp/decl.c:560
0x58e568 end_template_decl()
        ../../gcc/gcc/cp/pt.c:3786
0x62ed7b finish_fully_implicit_template
        ../../gcc/gcc/cp/parser.c:29040
0x637ad1 cp_parser_member_declaration
        ../../gcc/gcc/cp/parser.c:20086
0x6381ee cp_parser_member_specification_opt
        ../../gcc/gcc/cp/parser.c:19630
0x6381ee cp_parser_class_specifier_1
        ../../gcc/gcc/cp/parser.c:18885
0x63ab90 cp_parser_class_specifier
        ../../gcc/gcc/cp/parser.c:19101
0x63ab90 cp_parser_type_specifier
        ../../gcc/gcc/cp/parser.c:14080
0x6500a9 cp_parser_decl_specifier_seq
        ../../gcc/gcc/cp/parser.c:11328
0x654139 cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:10918
0x656140 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:10867
0x657230 cp_parser_declaration_statement
        ../../gcc/gcc/cp/parser.c:10514
0x63fad7 cp_parser_statement
        ../../gcc/gcc/cp/parser.c:9274
0x640dde cp_parser_statement_seq_opt
        ../../gcc/gcc/cp/parser.c:9552
0x640f26 cp_parser_compound_statement
        ../../gcc/gcc/cp/parser.c:9506
0x6522db cp_parser_function_body
        ../../gcc/gcc/cp/parser.c:18318
0x6522db cp_parser_ctor_initializer_opt_and_function_body
        ../../gcc/gcc/cp/parser.c:18354
0x65331f cp_parser_function_definition_after_declarator
        ../../gcc/gcc/cp/parser.c:22338
0x654027 cp_parser_function_definition_from_specifiers_and_declarator
        ../../gcc/gcc/cp/parser.c:22259
0x654027 cp_parser_init_declarator
        ../../gcc/gcc/cp/parser.c:16347
Please submit a full bug report, [etc.]

Furthermore, IMHO the error message is bogus and the code should be accepted.