[Bug c++/60390] New: [c++1y] ICE with declaring function with auto parameter as friend

[Bug c++/60390] New: [c++1y] ICE with declaring function with auto parameter as friend

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60390

            Bug ID: 60390
           Summary: [c++1y] ICE with declaring function with auto
                    parameter as friend
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org
                CC: abutcher at gcc dot gnu.org

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

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

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

bug.cc:8:26: internal compiler error: in poplevel_class, at
cp/name-lookup.c:2951
   friend void A::foo(auto);
                          ^
0x783a07 poplevel_class()
        ../../gcc/gcc/cp/name-lookup.c:2951
0x667d28 popclass()
        ../../gcc/gcc/cp/class.c:7129
0x66818a pop_nested_class()
        ../../gcc/gcc/cp/class.c:7275
0x6c2cf1 cp_parser_direct_declarator
        ../../gcc/gcc/cp/parser.c:17479
0x6c2cf1 cp_parser_declarator
        ../../gcc/gcc/cp/parser.c:16947
0x6ac38d cp_parser_member_declaration
        ../../gcc/gcc/cp/parser.c:20353
0x6afa74 cp_parser_member_specification_opt
        ../../gcc/gcc/cp/parser.c:20034
0x6afa74 cp_parser_class_specifier_1
        ../../gcc/gcc/cp/parser.c:19268
0x6afa74 cp_parser_class_specifier
        ../../gcc/gcc/cp/parser.c:19495
0x6afa74 cp_parser_type_specifier
        ../../gcc/gcc/cp/parser.c:14305
0x6c8f70 cp_parser_decl_specifier_seq
        ../../gcc/gcc/cp/parser.c:11547
0x6cfb49 cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:11137
0x6b2ff3 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:11086
0x6da2b2 cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10983
0x6d8fa8 cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10869
0x6da85a cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:4014
0x6da85a c_parse_file()
        ../../gcc/gcc/cp/parser.c:31595
0x7f9f53 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1060
Please submit a full bug report, [etc.]

This is similar to PR60064.
Adam, you might want to have a look.

[Bug c++/60390] [c++1y] ICE with declaring function with auto parameter as friend

[abutcher at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60390

Adam Butcher <abutcher at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-03-15
           Assignee|unassigned at gcc dot gnu.org      |abutcher at gcc dot gnu.org
   Target Milestone|---                         |4.9.0
     Ever confirmed|0                           |1

[Bug c++/60390] [c++1y] ICE with declaring function with auto parameter as friend

[abutcher at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60390

--- Comment #1 from Adam Butcher <abutcher at gcc dot gnu.org> ---
Author: abutcher
Date: Mon Mar 17 20:02:26 2014
New Revision: 208625

URL: http://gcc.gnu.org/viewcvs?rev=208625&root=gcc&view=rev
Log:
Fix PR c++/60390

    PR c++/60390
    * parser.c (cp_parser_member_declaration): Don't allow
    finish_fully_implicit_template to consider friend declarations to be
    class member templates.
    (synthesize_implicit_template_parm): Handling winding back through class
    scope to the class being defined in order to inject a template argument
    list.

    PR c++/60390
    * g++.dg/cpp1y/pr60390.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/pr60390.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/parser.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/60390] [c++1y] ICE with declaring function with auto parameter as friend

[abutcher at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60390

Adam Butcher <abutcher at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #2 from Adam Butcher <abutcher at gcc dot gnu.org> ---
Fixed in 4.9.