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* [Bug c++/15218] [DR 421] rvalue.field is not an lvalue [not found] <bug-15218-6528@http.gcc.gnu.org/bugzilla/> @ 2009-01-16 20:33 ` pinskia at gcc dot gnu dot org 2010-02-08 12:11 ` dibeas at ieee dot org 2010-04-23 16:01 ` wb at fnal dot gov 2 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2009-01-16 20:33 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from pinskia at gcc dot gnu dot org 2009-01-16 20:33 ------- *** Bug 38870 has been marked as a duplicate of this bug. *** -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |stefan dot constantin at | |gmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15218 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/15218] [DR 421] rvalue.field is not an lvalue [not found] <bug-15218-6528@http.gcc.gnu.org/bugzilla/> 2009-01-16 20:33 ` [Bug c++/15218] [DR 421] rvalue.field is not an lvalue pinskia at gcc dot gnu dot org @ 2010-02-08 12:11 ` dibeas at ieee dot org 2010-04-23 16:01 ` wb at fnal dot gov 2 siblings, 0 replies; 5+ messages in thread From: dibeas at ieee dot org @ 2010-02-08 12:11 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from dibeas at ieee dot org 2010-02-08 12:11 ------- Also related: dereferencing a data member pointer with an lvalue incorrectly yields an lvalue: struct X { int x; }; X f(); void g() { int X::*ptr = &X::x; f().*ptr = 5; // should not compile! } -- dibeas at ieee dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dibeas at ieee dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15218 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/15218] [DR 421] rvalue.field is not an lvalue [not found] <bug-15218-6528@http.gcc.gnu.org/bugzilla/> 2009-01-16 20:33 ` [Bug c++/15218] [DR 421] rvalue.field is not an lvalue pinskia at gcc dot gnu dot org 2010-02-08 12:11 ` dibeas at ieee dot org @ 2010-04-23 16:01 ` wb at fnal dot gov 2 siblings, 0 replies; 5+ messages in thread From: wb at fnal dot gov @ 2010-04-23 16:01 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from wb at fnal dot gov 2010-04-23 16:00 ------- Created an attachment (id=20472) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20472&action=view) test case; incorrectly compiles -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15218 ^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <bug-15218-4@http.gcc.gnu.org/bugzilla/>]
* [Bug c++/15218] [DR 421] rvalue.field is not an lvalue [not found] <bug-15218-4@http.gcc.gnu.org/bugzilla/> @ 2011-09-29 11:17 ` paolo.carlini at oracle dot com 0 siblings, 0 replies; 5+ messages in thread From: paolo.carlini at oracle dot com @ 2011-09-29 11:17 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15218 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC|gcc-bugs at gcc dot gnu.org | Resolution| |FIXED --- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-09-29 10:57:40 UTC --- All the snippets are rejected in mainline (would be 4.7), all but Comment 3 in 4.6.x too. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/15218] New: [DR 421] rvalue.field is not an lvalue
@ 2004-04-30 3:46 pinskia at gcc dot gnu dot org
2004-05-05 1:24 ` [Bug c++/15218] " bangerth at dealii dot org
0 siblings, 1 reply; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-04-30 3:46 UTC (permalink / raw)
To: gcc-bugs
>From DR 421 <http://anubis.dkuug.dk/jtc1/sc22/wg21/docs/cwg_defects.html#421>:
typedef
struct {
int a;
} A;
A f(void)
{
A a;
return a;
}
int main(void)
{
int* p = &f().a; // should reject as rvalue.field is still an rvalue
}
--
Summary: [DR 421] rvalue.field is not an lvalue
Product: gcc
Version: 3.5.0
Status: UNCONFIRMED
Keywords: accepts-invalid
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15218
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/15218] [DR 421] rvalue.field is not an lvalue 2004-04-30 3:46 [Bug c++/15218] New: " pinskia at gcc dot gnu dot org @ 2004-05-05 1:24 ` bangerth at dealii dot org 0 siblings, 0 replies; 5+ messages in thread From: bangerth at dealii dot org @ 2004-05-05 1:24 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From bangerth at dealii dot org 2004-05-05 01:24 ------- Confirmed. We don't even give a warning about taking the address of a temporary :-( This is what I get from icc: g/x> icc -Xc -ansi -c x.cc x.cc(9): warning #592: variable "a" is used before its value is set return a; ^ x.cc(14): error: expression must be an lvalue or a function designator int* p = &f().a; // should reject as rvalue.field is still an rvalue ^ compilation aborted for x.cc (code 2) W. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed| |1 Last reconfirmed|0000-00-00 00:00:00 |2004-05-05 01:24:54 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15218 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-09-29 10:59 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- [not found] <bug-15218-6528@http.gcc.gnu.org/bugzilla/> 2009-01-16 20:33 ` [Bug c++/15218] [DR 421] rvalue.field is not an lvalue pinskia at gcc dot gnu dot org 2010-02-08 12:11 ` dibeas at ieee dot org 2010-04-23 16:01 ` wb at fnal dot gov [not found] <bug-15218-4@http.gcc.gnu.org/bugzilla/> 2011-09-29 11:17 ` paolo.carlini at oracle dot com 2004-04-30 3:46 [Bug c++/15218] New: " pinskia at gcc dot gnu dot org 2004-05-05 1:24 ` [Bug c++/15218] " bangerth at dealii dot org
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