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* [Bug c++/14211] New: missing lvalue check ?
@ 2004-02-19 15:06 d dot binderman at virgin dot net
2004-02-20 21:30 ` [Bug c++/14211] " bangerth at dealii dot org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: d dot binderman at virgin dot net @ 2004-02-19 15:06 UTC (permalink / raw)
To: gcc-bugs
// Given the following C++ code
void f( char * str)
{
char * & m = const_cast<char *>( str);
}
/*
then g++ 332 says not a lot.
[dcb@localhost src]$ ~/gnu/gcc332/results/bin/g++ -c -g -O2 -Wall -ansi
-pedantic cc.cc
cc.cc: In function `void f(char*)':
cc.cc:7: warning: unused variable `char*&m'
[dcb@localhost src]$
But Intel C++ 8.0 says
[dcb@localhost src]$ icc cc.cc
cc.cc(7): error: initial value of reference to non-const must be an lvalue
char * & m = const_cast<char *>( str);
^
compilation aborted for cc.cc (code 2)
[dcb@localhost src]$
One compiler must be wrong.
*/
--
Summary: missing lvalue check ?
Product: gcc
Version: 3.3.2
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: d dot binderman at virgin dot net
CC: gcc-bugs at gcc dot gnu dot org
GCC host triplet: linux/i386
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] missing lvalue check ?
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
@ 2004-02-20 21:30 ` bangerth at dealii dot org
2004-02-23 1:42 ` [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast should return lvalues giovannibajo at libero dot it
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: bangerth at dealii dot org @ 2004-02-20 21:30 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From bangerth at dealii dot org 2004-02-20 21:30 -------
5.2.11/1 clearly states that the result of a const_cast<T> is of type T.
In your case, it is a char*, so it is not an lvalue. Thus, gcc must
be wrong. Note also 5.2.11/4.
W.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2004-02-20 21:30:30
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast should return lvalues
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
2004-02-20 21:30 ` [Bug c++/14211] " bangerth at dealii dot org
@ 2004-02-23 1:42 ` giovannibajo at libero dot it
2004-04-28 2:05 ` [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: giovannibajo at libero dot it @ 2004-02-23 1:42 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From giovannibajo at libero dot it 2004-02-23 01:42 -------
Agreed, GCC is wrong here.
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Known to fail| |3.3.3 3.4.0 3.5.0
Known to work| |3.2.3
Summary|missing lvalue check ? |[3.3/3.4/3.5 Regression]
| |const_cast should return
| |lvalues
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
2004-02-20 21:30 ` [Bug c++/14211] " bangerth at dealii dot org
2004-02-23 1:42 ` [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast should return lvalues giovannibajo at libero dot it
@ 2004-04-28 2:05 ` pinskia at gcc dot gnu dot org
2004-06-06 3:36 ` giovannibajo at libero dot it
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-04-28 2:05 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|[3.3/3.4/3.5 Regression] |[3.3/3.4/3.5 Regression]
|const_cast should return |const_cast returns lvalue
|lvalues |but should be rvalue
Target Milestone|--- |3.3.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
` (2 preceding siblings ...)
2004-04-28 2:05 ` [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue pinskia at gcc dot gnu dot org
@ 2004-06-06 3:36 ` giovannibajo at libero dot it
2004-06-09 19:11 ` mmitchel at gcc dot gnu dot org
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: giovannibajo at libero dot it @ 2004-06-06 3:36 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From giovannibajo at libero dot it 2004-06-06 03:36 -------
Retargeting to 3.4.1, being a regression on that release branch.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |gdr at gcc dot gnu dot org
Target Milestone|3.3.4 |3.4.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
` (3 preceding siblings ...)
2004-06-06 3:36 ` giovannibajo at libero dot it
@ 2004-06-09 19:11 ` mmitchel at gcc dot gnu dot org
2004-06-10 14:27 ` cvs-commit at gcc dot gnu dot org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-06-09 19:11 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-06-09 19:11 -------
Working on a fix.
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |mark at codesourcery dot com
|dot org |
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
` (4 preceding siblings ...)
2004-06-09 19:11 ` mmitchel at gcc dot gnu dot org
@ 2004-06-10 14:27 ` cvs-commit at gcc dot gnu dot org
2004-06-10 14:27 ` cvs-commit at gcc dot gnu dot org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-06-10 14:27 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-06-10 14:26 -------
Subject: Bug 14211
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: mmitchel@gcc.gnu.org 2004-06-10 14:26:23
Modified files:
gcc/cp : ChangeLog parser.c pt.c typeck.c
Added files:
gcc/testsuite/g++.dg/conversion: const1.C reinterpret1.C
gcc/testsuite/g++.dg/template: enum2.C error13.C
Log message:
PR c++/15227
* parser.c (cp_parser_direct_declarator): Robustify.
PR c++/15877
* pt.c (tsubst_copy): Use decl_constant_value on enumeration
constants in non-dependent contexts.
PR c++/14211
PR c++/15076
* typeck.c (build_static_cast): Wrap casts in NON_LVALUE_EXPR when
necessary.
PR c++/14211
* g++.dg/conversion/const1.C: New test.
PR c++/15076
* g++.dg/conversion/reinterpret1.C: New test.
PR c++/15877
* g++.dg/template/enum2.C: New test.
PR c++/15227
* g++.dg/template/error13.C: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4089&r2=1.4090
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/parser.c.diff?cvsroot=gcc&r1=1.202&r2=1.203
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&r1=1.860&r2=1.861
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/typeck.c.diff?cvsroot=gcc&r1=1.548&r2=1.549
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/conversion/const1.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/conversion/reinterpret1.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/enum2.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/error13.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
` (5 preceding siblings ...)
2004-06-10 14:27 ` cvs-commit at gcc dot gnu dot org
@ 2004-06-10 14:27 ` cvs-commit at gcc dot gnu dot org
2004-06-10 14:30 ` mmitchel at gcc dot gnu dot org
2004-06-10 14:30 ` mmitchel at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-06-10 14:27 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-06-10 14:26 -------
Subject: Bug 14211
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-3_4-branch
Changes by: mmitchel@gcc.gnu.org 2004-06-10 14:26:50
Modified files:
gcc/cp : ChangeLog parser.c pt.c typeck.c
Added files:
gcc/testsuite/g++.dg/conversion: const1.C reinterpret1.C
gcc/testsuite/g++.dg/template: enum2.C error13.C
Log message:
PR c++/15227
* parser.c (cp_parser_direct_declarator): Robustify.
PR c++/15877
* pt.c (tsubst_copy): Use decl_constant_value on enumeration
constants in non-dependent contexts.
PR c++/14211
PR c++/15076
* typeck.c (build_static_cast): Wrap casts in NON_LVALUE_EXPR when
necessary.
PR c++/14211
* g++.dg/conversion/const1.C: New test.
PR c++/15076
* g++.dg/conversion/reinterpret1.C: New test.
PR c++/15877
* g++.dg/template/enum2.C: New test.
PR c++/15227
* g++.dg/template/error13.C: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.3892.2.119&r2=1.3892.2.120
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/parser.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.157.2.32&r2=1.157.2.33
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.816.2.29&r2=1.816.2.30
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/typeck.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.519.2.19&r2=1.519.2.20
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/conversion/const1.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/conversion/reinterpret1.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/enum2.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/error13.C.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=NONE&r2=1.1.2.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
` (7 preceding siblings ...)
2004-06-10 14:30 ` mmitchel at gcc dot gnu dot org
@ 2004-06-10 14:30 ` mmitchel at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-06-10 14:30 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-06-10 14:30 -------
Fixed in GCC 3.4.1.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
` (6 preceding siblings ...)
2004-06-10 14:27 ` cvs-commit at gcc dot gnu dot org
@ 2004-06-10 14:30 ` mmitchel at gcc dot gnu dot org
2004-06-10 14:30 ` mmitchel at gcc dot gnu dot org
8 siblings, 0 replies; 10+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-06-10 14:30 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-06-10 14:30 -------
*** Bug 15076 has been marked as a duplicate of this bug. ***
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |niemayer at isg dot de
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14211
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2004-06-10 14:30 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-02-19 15:06 [Bug c++/14211] New: missing lvalue check ? d dot binderman at virgin dot net
2004-02-20 21:30 ` [Bug c++/14211] " bangerth at dealii dot org
2004-02-23 1:42 ` [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast should return lvalues giovannibajo at libero dot it
2004-04-28 2:05 ` [Bug c++/14211] [3.3/3.4/3.5 Regression] const_cast returns lvalue but should be rvalue pinskia at gcc dot gnu dot org
2004-06-06 3:36 ` giovannibajo at libero dot it
2004-06-09 19:11 ` mmitchel at gcc dot gnu dot org
2004-06-10 14:27 ` cvs-commit at gcc dot gnu dot org
2004-06-10 14:27 ` cvs-commit at gcc dot gnu dot org
2004-06-10 14:30 ` mmitchel at gcc dot gnu dot org
2004-06-10 14:30 ` mmitchel at gcc dot gnu dot org
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