[Bug c/47043] New: allow deprecating enum values

[Bug c/47043] New: allow deprecating enum values

[drepper.fsp at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47043

           Summary: allow deprecating enum values
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: drepper.fsp@gmail.com


The deprecated is nice and it's use should be expanded.  Sometimes enum values
have to be deprecated and it would be useful if one could write this:

enum { newval, oldval __attribute__ ((deprecated)) };

Any use of 'oldval' should provoke the usual warning.

[Bug c/47043] allow deprecating enum values

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47043

Steven Bosscher <steven at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.12.22 18:34:01
                 CC|                            |steven at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Steven Bosscher <steven at gcc dot gnu.org> 2010-12-22 18:34:01 UTC ---
Interesting idea.

[Bug c/47043] allow deprecating enum values

[bangerth at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47043

Wolfgang Bangerth <bangerth at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |joseph.h.garvin at gmail
                   |                            |dot com

--- Comment #2 from Wolfgang Bangerth <bangerth at gmail dot com> 2013-01-05 23:31:11 UTC ---
*** Bug 45168 has been marked as a duplicate of this bug. ***

[Bug c/47043] allow deprecating enum values

[bangerth at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47043

Wolfgang Bangerth <bangerth at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bangerth at gmail dot com

--- Comment #3 from Wolfgang Bangerth <bangerth at gmail dot com> 2013-01-05 23:32:04 UTC ---
Indeed a good idea -- I'm missing it too. For the record, clang++ accepts the
code.

[Bug c/47043] allow deprecating enum values

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47043

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |mpolacek at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |mpolacek at gcc dot gnu.org
   Target Milestone|---                         |6.0

[Bug c/47043] allow deprecating enum values

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47043

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri May 22 09:07:31 2015
New Revision: 223527

URL: https://gcc.gnu.org/viewcvs?rev=223527&root=gcc&view=rev
Log:
        PR c/47043
        * c-common.c (handle_deprecated_attribute): Allow CONST_DECL.

        * c-parser.c (c_parser_enum_specifier): Parse and apply enumerator
        attributes.

        * cp-tree.h (build_enumerator): Update declaration.
        * decl.c (build_enumerator): Add attributes parameter.  Call
        cplus_decl_attributes.
        * init.c (constant_value_1): Pass tf_none to mark_used.
        * parser.c (cp_parser_enumerator_definition): Parse attributes and
        pass them down to build_enumerator.
        * pt.c (tsubst_enum): Pass decl attributes to build_enumerator.
        * semantics.c (finish_id_expression): Don't warn_deprecated_use here.

        * doc/extend.texi (Enumerator Attributes): New section.
        Document syntax of enumerator attributes.

        * c-c++-common/attributes-enum-1.c: New test.
        * c-c++-common/attributes-enum-2.c: New test.
        * g++.dg/cpp0x/attributes-enum-1.C: New test.
        * g++.dg/cpp1y/attributes-enum-1.C: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/attributes-enum-1.c
    trunk/gcc/testsuite/c-c++-common/attributes-enum-2.c
    trunk/gcc/testsuite/g++.dg/cpp0x/attributes-enum-1.C
    trunk/gcc/testsuite/g++.dg/cpp1y/attributes-enum-1.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-common.c
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-parser.c
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/init.c
    trunk/gcc/cp/parser.c
    trunk/gcc/cp/pt.c
    trunk/gcc/cp/semantics.c
    trunk/gcc/doc/extend.texi
    trunk/gcc/testsuite/ChangeLog

[Bug c/47043] allow deprecating enum values

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47043

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

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

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Done.