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* [Bug c++/50618] New: Virtual inheritance segfault
@ 2011-10-04 20:11 tomboshoven at gmail dot com
2011-10-04 20:46 ` [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] " pinskia at gcc dot gnu.org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: tomboshoven at gmail dot com @ 2011-10-04 20:11 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
Bug #: 50618
Summary: Virtual inheritance segfault
Classification: Unclassified
Product: gcc
Version: 4.6.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: tomboshoven@gmail.com
Created attachment 25417
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25417
A small program using multiple inheritance, segfaults when run.
Affected GCC Versions:
4.6.1 20110819 (prerelease) (Arch Linux package)
4.5.3 (Compiled using Arch defaults, --march=core2)
Both x64.
GCC 4.2 does not seem to be affected.
The attached source code, when compiled without any additional flags, segfaults
when executed.
The segfault occurs within the ostream.
I tried to further minimize the code, but all components of this code seem to
be required.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
@ 2011-10-04 20:46 ` pinskia at gcc dot gnu.org
2011-10-10 15:26 ` rguenth at gcc dot gnu.org
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu.org @ 2011-10-04 20:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |4.3.5
Keywords| |wrong-code
Last reconfirmed| |2011-10-04
Ever Confirmed|0 |1
Summary|Virtual inheritance |[4.4/4.5/4.6/4.7
|segfault |Regression] Virtual
| |inheritance segfault
Target Milestone|--- |4.4.7
Known to fail| |4.4.1, 4.5.1, 4.6.1, 4.7.0
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-10-04 20:45:50 UTC ---
Here is a simplier testcase:
struct Base
{
const int text;
Base():text(1) {}
Base(int aText)
: text(aText) {}
};
struct SubA : public virtual Base
{
protected:
int x;
public:
SubA(int aX)
: x(aX) {}
};
class SubB : public virtual Base
{};
struct Diamond : public SubA, public SubB
{
Diamond(int text)
: Base(text), SubA(5), SubB() {}
void printText()
{
if(text != 2)
__builtin_abort();
if(x!=5)
__builtin_abort();
}
};
int main(int, char**)
{
Diamond x(2);
x.printText();
}
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
2011-10-04 20:46 ` [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] " pinskia at gcc dot gnu.org
@ 2011-10-10 15:26 ` rguenth at gcc dot gnu.org
2011-10-11 19:42 ` jason at gcc dot gnu.org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-10 15:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
2011-10-04 20:46 ` [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] " pinskia at gcc dot gnu.org
2011-10-10 15:26 ` rguenth at gcc dot gnu.org
@ 2011-10-11 19:42 ` jason at gcc dot gnu.org
2011-10-13 18:02 ` jason at gcc dot gnu.org
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: jason at gcc dot gnu.org @ 2011-10-11 19:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |jason at gcc dot gnu.org
|gnu.org |
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
` (3 preceding siblings ...)
2011-10-13 18:02 ` jason at gcc dot gnu.org
@ 2011-10-13 18:02 ` jason at gcc dot gnu.org
2011-10-13 18:04 ` jason at gcc dot gnu.org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: jason at gcc dot gnu.org @ 2011-10-13 18:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-13 18:01:58 UTC ---
Author: jason
Date: Thu Oct 13 18:01:51 2011
New Revision: 179934
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179934
Log:
PR c++/50618
* init.c (expand_aggr_init_1): Don't zero-initialize virtual
bases of a base subobject.
Added:
trunk/gcc/testsuite/g++.dg/init/vbase1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/init.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
` (2 preceding siblings ...)
2011-10-11 19:42 ` jason at gcc dot gnu.org
@ 2011-10-13 18:02 ` jason at gcc dot gnu.org
2011-10-13 18:02 ` jason at gcc dot gnu.org
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: jason at gcc dot gnu.org @ 2011-10-13 18:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-13 18:02:15 UTC ---
Author: jason
Date: Thu Oct 13 18:02:10 2011
New Revision: 179935
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179935
Log:
PR c++/50618
* init.c (expand_aggr_init_1): Don't zero-initialize virtual
bases of a base subobject.
Added:
branches/gcc-4_6-branch/gcc/testsuite/g++.dg/init/vbase1.C
Modified:
branches/gcc-4_6-branch/gcc/cp/ChangeLog
branches/gcc-4_6-branch/gcc/cp/init.c
branches/gcc-4_6-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
` (4 preceding siblings ...)
2011-10-13 18:02 ` jason at gcc dot gnu.org
@ 2011-10-13 18:04 ` jason at gcc dot gnu.org
2011-10-13 18:09 ` jason at gcc dot gnu.org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: jason at gcc dot gnu.org @ 2011-10-13 18:04 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-13 18:03:13 UTC ---
Author: jason
Date: Thu Oct 13 18:03:06 2011
New Revision: 179938
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179938
Log:
PR c++/50618
* init.c (expand_aggr_init_1): Don't zero-initialize virtual
bases of a base subobject.
Added:
branches/gcc-4_4-branch/gcc/testsuite/g++.dg/init/vbase1.C
Modified:
branches/gcc-4_4-branch/gcc/cp/ChangeLog
branches/gcc-4_4-branch/gcc/cp/init.c
branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
` (5 preceding siblings ...)
2011-10-13 18:04 ` jason at gcc dot gnu.org
@ 2011-10-13 18:09 ` jason at gcc dot gnu.org
2011-10-13 18:09 ` jason at gcc dot gnu.org
2011-11-29 7:01 ` pinskia at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: jason at gcc dot gnu.org @ 2011-10-13 18:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-13 18:02:34 UTC ---
Author: jason
Date: Thu Oct 13 18:02:27 2011
New Revision: 179936
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179936
Log:
PR c++/50618
* init.c (expand_aggr_init_1): Don't zero-initialize virtual
bases of a base subobject.
Added:
branches/gcc-4_5-branch/gcc/testsuite/g++.dg/init/vbase1.C
Modified:
branches/gcc-4_5-branch/gcc/cp/ChangeLog
branches/gcc-4_5-branch/gcc/cp/init.c
branches/gcc-4_5-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
` (6 preceding siblings ...)
2011-10-13 18:09 ` jason at gcc dot gnu.org
@ 2011-10-13 18:09 ` jason at gcc dot gnu.org
2011-11-29 7:01 ` pinskia at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: jason at gcc dot gnu.org @ 2011-10-13 18:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> 2011-10-13 18:05:57 UTC ---
Fixed for 4.4.7.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] Virtual inheritance segfault
2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
` (7 preceding siblings ...)
2011-10-13 18:09 ` jason at gcc dot gnu.org
@ 2011-11-29 7:01 ` pinskia at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: pinskia at gcc dot gnu.org @ 2011-11-29 7:01 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50618
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |zhezherun at yandex dot ru
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-11-29 05:01:12 UTC ---
*** Bug 51331 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2011-11-29 5:03 UTC | newest]
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2011-10-04 20:11 [Bug c++/50618] New: Virtual inheritance segfault tomboshoven at gmail dot com
2011-10-04 20:46 ` [Bug c++/50618] [4.4/4.5/4.6/4.7 Regression] " pinskia at gcc dot gnu.org
2011-10-10 15:26 ` rguenth at gcc dot gnu.org
2011-10-11 19:42 ` jason at gcc dot gnu.org
2011-10-13 18:02 ` jason at gcc dot gnu.org
2011-10-13 18:02 ` jason at gcc dot gnu.org
2011-10-13 18:04 ` jason at gcc dot gnu.org
2011-10-13 18:09 ` jason at gcc dot gnu.org
2011-10-13 18:09 ` jason at gcc dot gnu.org
2011-11-29 7:01 ` pinskia at gcc dot gnu.org
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