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* [Bug c++/34935] [4.3 regression] ICE with attribute may_alias
2008-01-23 7:47 [Bug c++/34935] New: [4.3 regression] ICE with attribute may_alias reichelt at gcc dot gnu dot org
@ 2008-01-23 7:47 ` reichelt at gcc dot gnu dot org
2008-01-23 10:57 ` rguenth at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2008-01-23 7:47 UTC (permalink / raw)
To: gcc-bugs
--
reichelt at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34935
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/34935] New: [4.3 regression] ICE with attribute may_alias
@ 2008-01-23 7:47 reichelt at gcc dot gnu dot org
2008-01-23 7:47 ` [Bug c++/34935] " reichelt at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2008-01-23 7:47 UTC (permalink / raw)
To: gcc-bugs
The following valid code snippet triggers an ICE on mainline:
============================================
typedef int X __attribute((may_alias));
void foo(X);
void foo(int,int);
============================================
bug.cc:4: internal compiler error: same canonical type node for different types
int and X
Please submit a full bug report, [etc.]
--
Summary: [4.3 regression] ICE with attribute may_alias
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, monitored
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34935
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/34935] [4.3 regression] ICE with attribute may_alias
2008-01-23 7:47 [Bug c++/34935] New: [4.3 regression] ICE with attribute may_alias reichelt at gcc dot gnu dot org
2008-01-23 7:47 ` [Bug c++/34935] " reichelt at gcc dot gnu dot org
@ 2008-01-23 10:57 ` rguenth at gcc dot gnu dot org
2008-01-23 16:45 ` steven at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-01-23 10:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-01-23 10:46 -------
Confirmed. They should not have the same canonical type.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |ice-checking, wrong-code
Priority|P3 |P2
Last reconfirmed|0000-00-00 00:00:00 |2008-01-23 10:46:20
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34935
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/34935] [4.3 regression] ICE with attribute may_alias
2008-01-23 7:47 [Bug c++/34935] New: [4.3 regression] ICE with attribute may_alias reichelt at gcc dot gnu dot org
2008-01-23 7:47 ` [Bug c++/34935] " reichelt at gcc dot gnu dot org
2008-01-23 10:57 ` rguenth at gcc dot gnu dot org
@ 2008-01-23 16:45 ` steven at gcc dot gnu dot org
2008-01-25 21:36 ` dgregor at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: steven at gcc dot gnu dot org @ 2008-01-23 16:45 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from steven at gcc dot gnu dot org 2008-01-23 16:20 -------
CCing the canonical type expert.
--
steven at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dgregor at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34935
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/34935] [4.3 regression] ICE with attribute may_alias
2008-01-23 7:47 [Bug c++/34935] New: [4.3 regression] ICE with attribute may_alias reichelt at gcc dot gnu dot org
` (2 preceding siblings ...)
2008-01-23 16:45 ` steven at gcc dot gnu dot org
@ 2008-01-25 21:36 ` dgregor at gcc dot gnu dot org
2008-01-31 21:21 ` dgregor at gcc dot gnu dot org
2008-01-31 22:19 ` dgregor at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: dgregor at gcc dot gnu dot org @ 2008-01-25 21:36 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from dgregor at gcc dot gnu dot org 2008-01-25 21:15 -------
It turns out that the canonical types system is doing the right thing, and that
the older type-comparison mechanisms are getting the wrong answer. This is
still my bug, and it is a regression. Patch here:
http://gcc.gnu.org/ml/gcc-patches/2008-01/msg01161.html
--
dgregor at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |dgregor at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2008-01-23 10:46:20 |2008-01-25 21:15:54
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34935
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/34935] [4.3 regression] ICE with attribute may_alias
2008-01-23 7:47 [Bug c++/34935] New: [4.3 regression] ICE with attribute may_alias reichelt at gcc dot gnu dot org
` (3 preceding siblings ...)
2008-01-25 21:36 ` dgregor at gcc dot gnu dot org
@ 2008-01-31 21:21 ` dgregor at gcc dot gnu dot org
2008-01-31 22:19 ` dgregor at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: dgregor at gcc dot gnu dot org @ 2008-01-31 21:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from dgregor at gcc dot gnu dot org 2008-01-31 20:07 -------
Subject: Bug 34935
Author: dgregor
Date: Thu Jan 31 20:06:33 2008
New Revision: 131984
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=131984
Log:
2008-01-31 Douglas Gregor <doug.gregor@gmail.com>
Jakub Jelinek <jakub@redhat.com>
PR c++/34935
PR c++/34936
* typeck.c (structural_comptypes): Handle comparisons of
VOID_TYPE, BOOLEAN_TYPE, INTEGER_TYPE, FIXED_POINT_TYPE, and
REAL_TYPE nodes.
* mangle.c (write_builtin_type): Map down to the canonical type,
which will be one of the predefined type nodes.
2008-01-31 Douglas Gregor <doug.gregor@gmail.com>
Jakub Jelinek <jakub@redhat.com>
PR c++/34935
PR c++/34936
* g++.dg/ext/alias-canon.C: New.
* g++.dg/ext/alias-mangle.C: New.
Added:
trunk/gcc/testsuite/g++.dg/ext/alias-canon.C
trunk/gcc/testsuite/g++.dg/ext/alias-mangle.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/mangle.c
trunk/gcc/cp/typeck.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34935
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/34935] [4.3 regression] ICE with attribute may_alias
2008-01-23 7:47 [Bug c++/34935] New: [4.3 regression] ICE with attribute may_alias reichelt at gcc dot gnu dot org
` (4 preceding siblings ...)
2008-01-31 21:21 ` dgregor at gcc dot gnu dot org
@ 2008-01-31 22:19 ` dgregor at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: dgregor at gcc dot gnu dot org @ 2008-01-31 22:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from dgregor at gcc dot gnu dot org 2008-01-31 20:07 -------
Fixed on mainline
--
dgregor at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34935
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2008-01-31 20:08 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2008-01-23 7:47 [Bug c++/34935] New: [4.3 regression] ICE with attribute may_alias reichelt at gcc dot gnu dot org
2008-01-23 7:47 ` [Bug c++/34935] " reichelt at gcc dot gnu dot org
2008-01-23 10:57 ` rguenth at gcc dot gnu dot org
2008-01-23 16:45 ` steven at gcc dot gnu dot org
2008-01-25 21:36 ` dgregor at gcc dot gnu dot org
2008-01-31 21:21 ` dgregor at gcc dot gnu dot org
2008-01-31 22:19 ` dgregor at gcc dot gnu dot org
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