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* [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression
@ 2006-05-08 19:36 mueller at gcc dot gnu dot org
2006-05-08 20:31 ` [Bug c++/27506] " mueller at gcc dot gnu dot org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: mueller at gcc dot gnu dot org @ 2006-05-08 19:36 UTC (permalink / raw)
To: gcc-bugs
the following testcase no longer compiles:
=== Cut ===
enum EBorderStyle
{
BNATIVE, BHIDDEN
};
class BorderValue
{
public:
EBorderStyle style:1;
};
struct CollapsedBorderValue
{
EBorderStyle style () const
{
return border ? border->style : BNATIVE;
}
const BorderValue *border;
};
=== Cut ===
--
Summary: [4.2 Regression] bitfield enum handling regression
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: critical
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: mueller at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27506
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/27506] [4.2 Regression] bitfield enum handling regression
2006-05-08 19:36 [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression mueller at gcc dot gnu dot org
@ 2006-05-08 20:31 ` mueller at gcc dot gnu dot org
2006-05-08 20:45 ` pinskia at gcc dot gnu dot org
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: mueller at gcc dot gnu dot org @ 2006-05-08 20:31 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from mueller at gcc dot gnu dot org 2006-05-08 20:31 -------
error message is:
bitfield-error-1.cc:14: error: invalid conversion from 'int' to 'EBorderStyle'
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27506
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/27506] [4.2 Regression] bitfield enum handling regression
2006-05-08 19:36 [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression mueller at gcc dot gnu dot org
2006-05-08 20:31 ` [Bug c++/27506] " mueller at gcc dot gnu dot org
@ 2006-05-08 20:45 ` pinskia at gcc dot gnu dot org
2006-05-09 6:17 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-08 20:45 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mmitchel at gcc dot gnu dot
| |org
Target Milestone|--- |4.2.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27506
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/27506] [4.2 Regression] bitfield enum handling regression
2006-05-08 19:36 [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression mueller at gcc dot gnu dot org
2006-05-08 20:31 ` [Bug c++/27506] " mueller at gcc dot gnu dot org
2006-05-08 20:45 ` pinskia at gcc dot gnu dot org
@ 2006-05-09 6:17 ` pinskia at gcc dot gnu dot org
2006-05-17 20:31 ` kazu at gcc dot gnu dot org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-09 6:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2006-05-09 06:17 -------
Confirmed, reduced testcase:
enum EBorderStyle
{
BNATIVE, BHIDDEN
};
struct BorderValue
{
enum EBorderStyle style:8;
};
enum EBorderStyle f(const struct BorderValue *border)
{
return border ? border->style : BNATIVE;
}
------------------------
I forgot if enum bitfields are a GNU extension for C++ (I know they are for C)
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2006-05-09 06:17:50
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27506
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/27506] [4.2 Regression] bitfield enum handling regression
2006-05-08 19:36 [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression mueller at gcc dot gnu dot org
` (2 preceding siblings ...)
2006-05-09 6:17 ` pinskia at gcc dot gnu dot org
@ 2006-05-17 20:31 ` kazu at gcc dot gnu dot org
2006-05-17 20:33 ` mmitchel at gcc dot gnu dot org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: kazu at gcc dot gnu dot org @ 2006-05-17 20:31 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from kazu at gcc dot gnu dot org 2006-05-17 20:31 -------
Reproduced as of svn revision 113870.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27506
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/27506] [4.2 Regression] bitfield enum handling regression
2006-05-08 19:36 [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression mueller at gcc dot gnu dot org
` (3 preceding siblings ...)
2006-05-17 20:31 ` kazu at gcc dot gnu dot org
@ 2006-05-17 20:33 ` mmitchel at gcc dot gnu dot org
2006-05-19 3:01 ` mmitchel at gcc dot gnu dot org
2006-05-19 3:06 ` mmitchel at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2006-05-17 20:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from mmitchel at gcc dot gnu dot org 2006-05-17 20:33 -------
Grumble. In my queue. I should have known better than to try to fix this the
right way. :-)
--
mmitchel at gcc dot gnu dot org changed:
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=27506
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/27506] [4.2 Regression] bitfield enum handling regression
2006-05-08 19:36 [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression mueller at gcc dot gnu dot org
` (4 preceding siblings ...)
2006-05-17 20:33 ` mmitchel at gcc dot gnu dot org
@ 2006-05-19 3:01 ` mmitchel at gcc dot gnu dot org
2006-05-19 3:06 ` mmitchel at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2006-05-19 3:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from mmitchel at gcc dot gnu dot org 2006-05-19 03:01 -------
Subject: Bug 27506
Author: mmitchel
Date: Fri May 19 03:01:14 2006
New Revision: 113902
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113902
Log:
PR c++/27471
PR c++/27506
* typeck.c (decay_conversion): Convert bitfields to their declared
types here. Improve documentation. Avoid use of cp_convert.
(default_conversion): Make it static. Perform integral promotions
before lvalue-to-rvalue, function-to-pointer, and array-to-pointer
conversions.
* init.c (build_init): Remove.
(expand_default_init): Do not call rvalue.
* call.c (null_ptr_cst_p): Robustify.
(build_conditional_expr): Tidy.
* except.c (build_throw): Do not perform lvalue-to-rvalue
conversion on operand before initializing temporary.
* tree.c (convert.h): Include it.
(convert_bitfield_to_declared_type): Use convert_to_integer, not
cp_convert.
(rvalue): Don't convert bitfields to their declared type here.
* cp-tree.h (build_init): Remove.
(default_conversion): Likewise.
* typeck2.c (build_m_component_ref): Do not perform
lvalue-to-rvalue, function-to-pointer, or array-to-pointer
conversions here. Correct error message.
PR c++/27471
PR c++/27506
* g++.dg/conversion/bitfield5.C: New test.
* g++.dg/conversion/bitfield6.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/conversion/bitfield5.C
trunk/gcc/testsuite/g++.dg/conversion/bitfield6.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/except.c
trunk/gcc/cp/init.c
trunk/gcc/cp/tree.c
trunk/gcc/cp/typeck.c
trunk/gcc/cp/typeck2.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27506
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/27506] [4.2 Regression] bitfield enum handling regression
2006-05-08 19:36 [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression mueller at gcc dot gnu dot org
` (5 preceding siblings ...)
2006-05-19 3:01 ` mmitchel at gcc dot gnu dot org
@ 2006-05-19 3:06 ` mmitchel at gcc dot gnu dot org
6 siblings, 0 replies; 8+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2006-05-19 3:06 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from mmitchel at gcc dot gnu dot org 2006-05-19 03:05 -------
Fixed in 4.2.
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27506
^ permalink raw reply [flat|nested] 8+ messages in thread
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2006-05-08 19:36 [Bug c++/27506] New: [4.2 Regression] bitfield enum handling regression mueller at gcc dot gnu dot org
2006-05-08 20:31 ` [Bug c++/27506] " mueller at gcc dot gnu dot org
2006-05-08 20:45 ` pinskia at gcc dot gnu dot org
2006-05-09 6:17 ` pinskia at gcc dot gnu dot org
2006-05-17 20:31 ` kazu at gcc dot gnu dot org
2006-05-17 20:33 ` mmitchel at gcc dot gnu dot org
2006-05-19 3:01 ` mmitchel at gcc dot gnu dot org
2006-05-19 3:06 ` mmitchel at gcc dot gnu dot org
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