[Bug c++/6709] [DR743] decltype cannot be used with the :: operator
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6709 Jason Merrill jason at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED CC||jason at gcc dot gnu.org Resolution||FIXED AssignedTo|unassigned at gcc dot |jason at gcc dot gnu.org |gnu.org | Target Milestone|--- |4.7.0 --- Comment #20 from Jason Merrill jason at gcc dot gnu.org 2011-07-22 21:24:35 UTC --- Implemented for 4.7.
[Bug c++/6709] [DR743] decltype cannot be used with the :: operator
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6709 --- Comment #19 from Jason Merrill jason at gcc dot gnu.org 2011-07-20 14:21:09 UTC --- Author: jason Date: Wed Jul 20 14:21:05 2011 New Revision: 176513 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=176513 Log: PR c++/6709 (DR 743) PR c++/42603 (DR 950) gcc/cp/ * parser.c (token_is_decltype, cp_lexer_next_token_is_decltype): New. (cp_parser_nested_name_specifier_opt): Allow decltype. (cp_parser_qualifying_entity): Likewise. (cp_parser_decltype): Replace source tokens with CPP_DECLTYPE. (cp_parser_simple_type_specifier): Handle decltype as scope. (cp_parser_base_specifier): Allow decltype. (cp_parser_base_clause): Don't crash on null base. * parser.h (CPP_KEYWORD, CPP_TEMPLATE_ID): Move to c-common.h. (CPP_NESTED_NAME_SPECIFIER, N_CP_TTYPES): Likewise. gcc/c-family/ * c-common.h (CPP_KEYWORD, CPP_TEMPLATE_ID): Move from cp/parser.h. (CPP_NESTED_NAME_SPECIFIER, N_CP_TTYPES): Likewise. (CPP_DECLTYPE): New. * c-common.c (c_parse_error): Handle CPP_DECLTYPE. Added: trunk/gcc/testsuite/g++.dg/cpp0x/decltype21.C Modified: trunk/gcc/c-family/ChangeLog trunk/gcc/c-family/c-common.c trunk/gcc/c-family/c-common.h trunk/gcc/cp/ChangeLog trunk/gcc/cp/parser.c trunk/gcc/cp/parser.h trunk/gcc/testsuite/ChangeLog
[Bug c++/6709] [DR743] decltype cannot be used with the :: operator
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6709
cheburnae osa252 at mail dot ru changed:
What|Removed |Added
CC||osa252 at mail dot ru
--- Comment #18 from cheburnae osa252 at mail dot ru 2011-04-06 14:23:53 UTC
---
A simple workaround:
template class T
struct TypeEcho {
typedef T R;
};
#define TYPE_OF(expr) TypeEchotypeof (*expr)::R
template class T
void foo() {
typename TYPE_OF(std::vectorT())::value_type();
}
void foo2() {
TYPE_OF(std::vectorint())::value_type();
fooint();
}
[Bug c++/6709] [DR743] decltype cannot be used with the :: operator
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6709
Adam Butcher dev.lists at jessamine dot co.uk changed:
What|Removed |Added
CC||dev.lists at jessamine dot
||co.uk
--- Comment #17 from Adam Butcher dev.lists at jessamine dot co.uk 2011-01-20
22:03:31 UTC ---
I have the beginnings of a fix for this (see the patch at
http://gcc.gnu.org/ml/gcc-patches/2011-01/msg01392.html); currently there is a
bug with my impl where any name on the right of `decltype(x)::' at the front of
a nested-name-specifier is considered a non-type unless qualified with
typename.
I.e. given:
struct X { typedef int I; }
X x;
instead of:
decltype(x)::I i = 7;
the user must currently write:
typename decltype(x)::I i = 7;
as if decltype(x) was somehow dependent on a template parameter -- which it
obviously isn't as there is no template it sight.
Otherwise the patch seems close.
[Bug c++/6709] [DR743] decltype cannot be used with the :: operator
--- Comment #16 from redi at gcc dot gnu dot org 2010-04-19 09:38 --- Unsuspending, DR743 was recently resolved -- redi at gcc dot gnu dot org changed: What|Removed |Added Status|SUSPENDED |NEW Last reconfirmed|2009-04-16 18:10:10 |2010-04-19 09:38:32 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6709
[Bug c++/6709] [DR743] decltype cannot be used with the :: operator
--- Comment #14 from pinskia at gcc dot gnu dot org 2010-04-18 06:48 --- *** Bug 43780 has been marked as a duplicate of this bug. *** -- pinskia at gcc dot gnu dot org changed: What|Removed |Added CC||faisalv at yahoo dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6709
[Bug c++/6709] [DR743] decltype cannot be used with the :: operator
--- Comment #15 from faisalv at yahoo dot com 2010-04-18 12:56 --- I had (In reply to comment #14) *** Bug 43780 has been marked as a duplicate of this bug. *** The DR 743 has been voted into FCD (CD2) - shouldn't this be unsuspended? thanks! -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=6709
