[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
Elias Pipping pipping at exherbo dot org changed:
What|Removed |Added
CC||pipping at exherbo dot org
--- Comment #18 from Elias Pipping pipping at exherbo dot org ---
I'm a bit confused here. Please consider the following piece of code:
SNIP
template typename T struct A {
typedef int type;
};
template typename T struct B : public AT {
using typename AT::type;
static const int block_size = type::block_size;
};
SNAP
Compiling it with gcc 4.8.2 yields
foo.hh:9:33: error: ‘type’ is not a class, namespace, or enumeration
whereas clang 3.4 will happily accept it(*).
At a first glance, this bug appears to address issues such as this, so that gcc
4.8.2 should be fine. This does not seem to be the case, however -- the test
case provided by Jim Apple compiles but the one above does not; I'll have to
assume the bug was only partly fixed?
(*) I orginally thought this was not valid and filed a clang bug:
http://llvm.org/bugs/show_bug.cgi?id=18574
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 --- Comment #19 from Jonathan Wakely redi at gcc dot gnu.org --- That example's a bit misleading, because 'int' really isn't a class, namespace or enumeration, but the error's wrong because there could be a specialization of A, and the same error is produced even if AT::type is a class type. Fabien, the fix doesn't seem to work with nested-name-specifiers, do you remember if there's another bug report about that case?
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 --- Comment #20 from fabien at gcc dot gnu.org --- (In reply to Jonathan Wakely from comment #19) Fabien, the fix doesn't seem to work with nested-name-specifiers, do you remember if there's another bug report about that case? Yes, it's probably PR58047.
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
--- Comment #21 from Elias Pipping pipping at exherbo dot org ---
(In reply to Jonathan Wakely from comment #19)
That example's a bit misleading, because 'int' really isn't a class,
namespace or enumeration, but the error's wrong because there could be a
specialization of A, and the same error is produced even if AT::type is
a class type.
You're right. This will reproduce the problem, too:
SNIP
struct C;
template typename T struct A {
typedef C type;
};
template typename T struct B : public AT {
using typename AT::type;
static const int block_size = type::block_size;
};
SNAP
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 --- Comment #22 from Elias Pipping pipping at exherbo dot org --- I guess my test case is a reduction/duplicate of PR37140.
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 Jonathan Wakely redi at gcc dot gnu.org changed: What|Removed |Added CC||akim.demaille at gmail dot ||com --- Comment #17 from Jonathan Wakely redi at gcc dot gnu.org 2012-03-19 16:31:04 UTC --- *** Bug 52620 has been marked as a duplicate of this bug. ***
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 fabien at gcc dot gnu.org changed: What|Removed |Added Target Milestone|--- |4.7.0
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 --- Comment #15 from fabien at gcc dot gnu.org 2011-12-13 18:47:04 UTC --- Author: fabien Date: Tue Dec 13 18:46:58 2011 New Revision: 182292 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=182292 Log: gcc/testsuite/ChangeLog 2011-12-11 Fabien Chene fab...@gcc.gnu.org PR c++/14258 * g++.dg/template/using16.C: New. * g++.dg/template/using17.C: New. gcc/cp/ChangeLog 2011-12-11 Fabien Chene fab...@gcc.gnu.org PR c++/14258 * cp-tree.h (USING_DECL_TYPENAME_P): New macro. * parser.c (cp_parser_nonclass_name): Handle using declarations that refer to a dependent type. (cp_parser_using_declaration): Set USING_DECL_TYPENAME_P to 1 if the using declaration refers to a dependent type. Added: trunk/gcc/testsuite/g++.dg/template/using16.C trunk/gcc/testsuite/g++.dg/template/using17.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/cp-tree.h trunk/gcc/cp/parser.c trunk/gcc/testsuite/ChangeLog
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 fabien at gcc dot gnu.org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED Known to fail|| --- Comment #16 from fabien at gcc dot gnu.org 2011-12-13 19:29:26 UTC --- Fixed.
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 Andrew Pinski pinskia at gcc dot gnu.org changed: What|Removed |Added CC||ian at airs dot com --- Comment #14 from Andrew Pinski pinskia at gcc dot gnu.org 2010-12-01 15:46:29 UTC --- *** Bug 46748 has been marked as a duplicate of this bug. ***
[Bug c++/14258] typename in a using declaration not supported
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258 Andrew Pinski pinskia at gcc dot gnu.org changed: What|Removed |Added CC||ilpoilves at hotmail dot ||com --- Comment #13 from Andrew Pinski pinskia at gcc dot gnu.org 2010-11-29 19:13:27 UTC --- *** Bug 46690 has been marked as a duplicate of this bug. ***
[Bug c++/14258] typename in a using declaration not supported
-- fabien at gcc dot gnu dot org changed: What|Removed |Added AssignedTo|unassigned at gcc dot gnu |fabien at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2006-09-03 21:39:11 |2010-06-07 12:43:20 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
[Bug c++/14258] typename in a using declaration not supported
--- Comment #12 from pinskia at gcc dot gnu dot org 2008-08-16 20:03 --- *** Bug 37141 has been marked as a duplicate of this bug. *** -- pinskia at gcc dot gnu dot org changed: What|Removed |Added CC||joao dot eiras at gmail dot ||com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
[Bug c++/14258] typename in a using declaration not supported
--- Comment #11 from starlight at binnacle dot cx 2008-02-16 19:28 --- Also fails with GCC 4.2.3. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
[Bug c++/14258] typename in a using declaration not supported
--- Comment #10 from rleigh at debian dot org 2007-05-07 13:04 --- Also fails with GCC 4.1.3. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
[Bug c++/14258] typename in a using declaration not supported
--- Comment #9 from pinskia at gcc dot gnu dot org 2007-05-06 23:31 --- *** Bug 15260 has been marked as a duplicate of this bug. *** -- pinskia at gcc dot gnu dot org changed: What|Removed |Added CC||jbeulich at novell dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
[Bug c++/14258] typename in a using declaration not supported
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-05-10 17:42 --- *** Bug 21484 has been marked as a duplicate of this bug. *** -- What|Removed |Added CC||smelkov at mph1 dot phys dot ||spbu dot ru http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
[Bug c++/14258] typename in a using declaration not supported
--- Additional Comments From pinskia at gcc dot gnu dot org 2004-11-18 12:25 --- *** Bug 18541 has been marked as a duplicate of this bug. *** -- What|Removed |Added CC||igodard at pacbell dot net http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14258
