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

[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.]

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

[mpolacek at gcc dot gnu.org]

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

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-02-18
                 CC|                            |mpolacek at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started ICEing with r202540, the disappeared with revert in r202570, then
started ICEing again with r202612.

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

[abutcher at gcc dot gnu.org]

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

--- Comment #2 from Adam Butcher <abutcher at gcc dot gnu.org> ---
Author: abutcher
Date: Tue Feb 18 22:29:56 2014
New Revision: 207856

URL: http://gcc.gnu.org/viewcvs?rev=207856&root=gcc&view=rev
Log:
Fix PR c++/60064.

    PR c++/60064
    * parser.c (cp_parser_member_declaration): Pop fully implicit template
    scope for generic friend declarations as well as for non-friends.

    PR c++/60064
    * g++.dg/cpp1y/pr60064.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/pr60064.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/parser.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/60064] [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

Volker Reichelt <reichelt at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |4.9.0

--- Comment #3 from Volker Reichelt <reichelt at gcc dot gnu.org> ---
Fixed with Adam's patch.