[Bug c++/58561] New: [c++0x] ICE using declaration of function with auto in return type

[Bug c++/58561] New: [c++0x] ICE using declaration of function with auto in return type

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58561

            Bug ID: 58561
           Summary: [c++0x] ICE using declaration of function with auto in
                    return type
           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++0x -g") triggers an
ICE since GCC 4.8.0:

=================
auto foo();

namespace N
{
  using ::foo;
}
=================

bug.cc:1:10: warning: 'foo' function uses 'auto' type specifier without
trailing return type [enabled by default]
 auto foo();
          ^
bug.cc:5:11: internal compiler error: in is_base_type, at dwarf2out.c:10146
   using ::foo;
           ^
0x86a0f6 is_base_type
        ../../gcc/gcc/dwarf2out.c:10146
0x86a0f6 modified_type_die
        ../../gcc/gcc/dwarf2out.c:10337
0x86b58a add_type_attribute
        ../../gcc/gcc/dwarf2out.c:16702
0x861250 gen_subprogram_die
        ../../gcc/gcc/dwarf2out.c:17895
0x86a42a force_decl_die
        ../../gcc/gcc/dwarf2out.c:19955
0x87b0e2 dwarf2out_imported_module_or_decl_1
        ../../gcc/gcc/dwarf2out.c:20398
0x70bcf6 cp_emit_debug_info_for_using(tree_node*, tree_node*)
        ../../gcc/gcc/cp/name-lookup.c:6206
0x70be53 do_toplevel_using_decl(tree_node*, tree_node*, tree_node*)
        ../../gcc/gcc/cp/name-lookup.c:3939
0x655204 cp_parser_using_declaration
        ../../gcc/gcc/cp/parser.c:15771
0x6559ec cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:10848
0x65e7fe cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10764
0x65d55d cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10650
0x65d770 cp_parser_namespace_body
        ../../gcc/gcc/cp/parser.c:15568
0x65d770 cp_parser_namespace_definition
        ../../gcc/gcc/cp/parser.c:15549
0x65e8f1 cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10752
0x65d55d cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10650
0x65ee46 cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:3939
0x65ee46 c_parse_file()
        ../../gcc/gcc/cp/parser.c:28898
0x772524 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1046
Please submit a full bug report, [etc.]

[Bug c++/58561] [4.8/4.9 Regression] [c++11] ICE using declaration of function with auto in return type

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58561

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-09-30
                 CC|                            |jason at gcc dot gnu.org,
                   |                            |mpolacek at gcc dot gnu.org
            Summary|[c++11] ICE using           |[4.8/4.9 Regression]
                   |declaration of function     |[c++11] ICE using
                   |with auto in return type    |declaration of function
                   |                            |with auto in return type
     Ever confirmed|0                           |1

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r185768.

[Bug c++/58561] [4.8/4.9 Regression] [c++11] ICE using declaration of function with auto in return type

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58561

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2

[Bug c++/58561] [4.8/4.9 Regression] [c++11] ICE using declaration of function with auto in return type

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58561

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.8.3

[Bug c++/58561] [4.8/4.9 Regression] [c++11] ICE using declaration of function with auto in return type

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58561

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |paolo.carlini at oracle dot com

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.

[Bug c++/58561] [4.8/4.9 Regression] [c++11] ICE using declaration of function with auto in return type

[paolo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58561

--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Jan 29 20:54:09 2014
New Revision: 207282

URL: http://gcc.gnu.org/viewcvs?rev=207282&root=gcc&view=rev
Log:
2014-01-29  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/58561
    * dwarf2out.c (is_cxx_auto): New.
    (is_base_type): Use it.
    (gen_type_die_with_usage): Likewise.

/testsuite
2014-01-29  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/58561
    * g++.dg/cpp1y/auto-fn23.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/auto-fn23.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dwarf2out.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/58561] [4.8 Regression] [c++11] ICE using declaration of function with auto in return type

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58561

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
           Assignee|paolo.carlini at oracle dot com    |unassigned at gcc dot gnu.org
   Target Milestone|4.8.3                       |4.9.0
            Summary|[4.8/4.9 Regression]        |[4.8 Regression] [c++11]
                   |[c++11] ICE using           |ICE using declaration of
                   |declaration of function     |function with auto in
                   |with auto in return type    |return type

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed for 4.9.0.

[Bug c++/58561] [4.8 Regression] [c++11] ICE using declaration of function with auto in return type

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58561

--- Comment #6 from David Edelsohn <dje at gcc dot gnu.org> ---
Author: dje
Date: Mon Nov 24 14:59:52 2014
New Revision: 218020

URL: https://gcc.gnu.org/viewcvs?rev=218020&root=gcc&view=rev
Log:
        PR c++/58561
        * dbxout.c: Include stringpool.h
        (dbxout_type) [default]: Ignore auto type.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dbxout.c