[Bug c++/59480] Missing error diagnostic: friend declaration specifying a default argument must be a definition

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59480

--- Comment #9 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Jul 18 10:27:12 2018
New Revision: 262851

URL: https://gcc.gnu.org/viewcvs?rev=262851&root=gcc&view=rev
Log:
/cp
2018-07-18  Paolo Carlini  <paolo.carl...@oracle.com>

        * class.c (note_name_declared_in_class): Prefer permerror + inform
        to a pair of permerrors; use DECL_SOURCE_LOCATION.

/testsuite
2018-07-18  Paolo Carlini  <paolo.carl...@oracle.com>

        * g++.dg/ext/uow-3.C: Adjust.
        * g++.dg/ext/uow-4.C: Likewise.
        * g++.dg/lookup/name-clash11.C: Likewise.
        * g++.dg/lookup/name-clash7.C: Likewise.
        * g++.dg/lookup/redecl1.C: Likewise.
        * g++.dg/warn/changes-meaning.C: Likewise.
        * g++.old-deja/g++.jason/scoping8.C: Likewise.
        * g++.old-deja/g++.law/nest1.C: Likewise.

/cp
2019-07-18  Paolo Carlini  <paolo.carl...@oracle.com>

        PR c++/59480, DR 136
        * decl.c (check_no_redeclaration_friend_default_args): New.
        (duplicate_decls): Use the latter; also check that a friend
        declaration specifying default arguments is a definition.

/testsuite
2019-07-18  Paolo Carlini  <paolo.carl...@oracle.com>

        PR c++/59480, DR 136
        * g++.dg/other/friend8.C: New.
        * g++.dg/other/friend9.C: Likewise.
        * g++.dg/other/friend10.C: Likewise.
        * g++.dg/other/friend11.C: Likewise.
        * g++.dg/other/friend12.C: Likewise.
        * g++.dg/parse/defarg4.C: Compile with -fpermissive -w.
        * g++.dg/parse/defarg8.C: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/other/friend10.C
    trunk/gcc/testsuite/g++.dg/other/friend11.C
    trunk/gcc/testsuite/g++.dg/other/friend12.C
    trunk/gcc/testsuite/g++.dg/other/friend8.C
    trunk/gcc/testsuite/g++.dg/other/friend9.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/class.c
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/ext/uow-3.C
    trunk/gcc/testsuite/g++.dg/ext/uow-4.C
    trunk/gcc/testsuite/g++.dg/lookup/name-clash11.C
    trunk/gcc/testsuite/g++.dg/lookup/name-clash7.C
    trunk/gcc/testsuite/g++.dg/lookup/redecl1.C
    trunk/gcc/testsuite/g++.dg/parse/defarg4.C
    trunk/gcc/testsuite/g++.dg/parse/defarg8.C
    trunk/gcc/testsuite/g++.dg/warn/changes-meaning.C
    trunk/gcc/testsuite/g++.old-deja/g++.jason/scoping8.C
    trunk/gcc/testsuite/g++.old-deja/g++.law/nest1.C