* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
@ 2011-03-09 11:37 ` rguenth at gcc dot gnu.org
2011-03-09 12:59 ` bero at arklinux dot org
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From: rguenth at gcc dot gnu.org @ 2011-03-09 11:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48042
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2011.03.09 11:37:32
Ever Confirmed|0 |1
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-09 11:37:32 UTC ---
Any chance you can reduce this to a managable testcase? LTO and debug
information are not exactly best friends, but we at least try to avoid ICEs
like this.
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
2011-03-09 11:37 ` [Bug lto/48042] " rguenth at gcc dot gnu.org
@ 2011-03-09 12:59 ` bero at arklinux dot org
2011-03-09 13:20 ` bero at arklinux dot org
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To: gcc-bugs
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--- Comment #2 from bero at arklinux dot org 2011-03-09 12:58:58 UTC ---
Somewhat reduced, still too large:
$ g++ -m64 -O2 -g -flto -o ../../../bin/uic3
.obj/release-static-emb-x86_64/widgetinfo.o -L/usr/src/ark/BUILD/qt/lib
-lQt3Support
lto1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: g++ returned 1 exit status
/usr/bin/ld: lto-wrapper failed
collect2: ld returned 1 exit status
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
2011-03-09 11:37 ` [Bug lto/48042] " rguenth at gcc dot gnu.org
2011-03-09 12:59 ` bero at arklinux dot org
@ 2011-03-09 13:20 ` bero at arklinux dot org
2011-03-09 13:27 ` bero at arklinux dot org
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From: bero at arklinux dot org @ 2011-03-09 13:20 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #3 from bero at arklinux dot org 2011-03-09 13:19:53 UTC ---
If I reduce widgetinfo.cpp to just say
#include <q3glist.h>
it still breaks and produces a different, potentially more useful error:
In file included from tools/q3glist.h:164:0,
from :88:
tools/q3gvector.cpp: In member function ‘write’:
tools/q3gvector.cpp:159:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: g++ returned 1 exit status
/usr/bin/ld: lto-wrapper failed
collect2: ld returned 1 exit status
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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From: bero at arklinux dot org @ 2011-03-09 13:27 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #4 from bero at arklinux dot org 2011-03-09 13:27:24 UTC ---
Created attachment 23598
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23598
Preprocessed source of remaining widgetinfo.cpp
Preprocessed source of remaining widgetinfo.cpp
$ g++ -g -O2 -flto -o test.o -c widgetinfo.i
$ g++ -g -O2 -flto -o test test.o -L/usr/src/ark/BUILD/qt/lib -lQt3Support
In file included from tools/q3glist.h:164:0,
from :88:
tools/q3gvector.cpp: In member function ‘write’:
tools/q3gvector.cpp:159:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: g++ returned 1 exit status
/usr/bin/ld: lto-wrapper failed
collect2: ld returned 1 exit status
Still requires a libQt3Support.so built with -flto to trigger the crash
though...
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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From: rguenth at gcc dot gnu.org @ 2011-03-09 13:31 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-09 13:31:13 UTC ---
Would be interesting to know if it also happens without -fwhole-program
(I am assuming you either use the gold or GNU ld linker-plugin).
You can also try linking to the libQT object files instead of the .so
and reduce the set of required files by incremental linking
(-r -nostdlib).
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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From: bero at arklinux dot org @ 2011-03-09 15:03 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #6 from bero at arklinux dot org 2011-03-09 15:02:55 UTC ---
Created attachment 23601
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23601
stripped down libQt3Support.a
Here's a stripped down version of libQt3Support.a -- linking the preprocessed
widgetinfo.cpp to it causes the crash.
I have both ld 2.21.51.0.6.20110118 with plugin support and gold 1.10
installed; not sure which gcc uses by default. /usr/bin/ld is ld.
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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From: bero at arklinux dot org @ 2011-03-09 16:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48042
bero at arklinux dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #23598|0 |1
is obsolete| |
Attachment #23601|0 |1
is obsolete| |
--- Comment #7 from bero at arklinux dot org 2011-03-09 16:27:45 UTC ---
Created attachment 23605
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23605
Much smaller test case
Small self-contained test case, source-only.
$ tar xzf bug48042.tar.gz
$ cd bug48042
$ ./bug48042.sh
In file included from
../../../include/QtCore/../../src/corelib/global/qglobal.h:899:0,
from :10:
../../../include/Qt3Support/../../src/qt3support/tools/q3glist.h: In member
function ‘count’:
../../../include/Qt3Support/../../src/qt3support/tools/q3glist.h:161:1:
internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: g++ returned 1 exit status
/usr/bin/ld: lto-wrapper failed
collect2: ld returned 1 exit status
The problem goes away if -g is added to the first compiler invocation as well
-- lto seems to fall over some constructs if linking is done with -g but an
object file was built without -g.
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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2011-03-09 16:28 ` bero at arklinux dot org
@ 2011-03-09 16:33 ` rguenth at gcc dot gnu.org
2011-03-09 16:46 ` bero at arklinux dot org
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From: rguenth at gcc dot gnu.org @ 2011-03-09 16:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48042
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #8 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-09 16:32:51 UTC ---
(In reply to comment #7)
> Created attachment 23605 [details]
> Much smaller test case
>
> Small self-contained test case, source-only.
>
> $ tar xzf bug48042.tar.gz
> $ cd bug48042
> $ ./bug48042.sh
> In file included from
> ../../../include/QtCore/../../src/corelib/global/qglobal.h:899:0,
> from :10:
> ../../../include/Qt3Support/../../src/qt3support/tools/q3glist.h: In member
> function ‘count’:
> ../../../include/Qt3Support/../../src/qt3support/tools/q3glist.h:161:1:
> internal compiler error: Segmentation fault
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
> lto-wrapper: g++ returned 1 exit status
> /usr/bin/ld: lto-wrapper failed
> collect2: ld returned 1 exit status
>
>
> The problem goes away if -g is added to the first compiler invocation as well
> -- lto seems to fall over some constructs if linking is done with -g but an
> object file was built without -g.
Ah, yeah - that's a known problem (and hard to fix). What should work
is dropping -g at link time.
Basically to make your way reliably all conditional clearing in
free_lang_data_in_* based on debug_info_level checks have to be dropped.
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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@ 2011-03-09 16:46 ` bero at arklinux dot org
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From: bero at arklinux dot org @ 2011-03-09 16:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48042
bero at arklinux dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #23605|0 |1
is obsolete| |
--- Comment #9 from bero at arklinux dot org 2011-03-09 16:46:24 UTC ---
Created attachment 23607
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23607
Reduced test case
Reduced test case, comes down to 10 lines of code
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
` (8 preceding siblings ...)
2011-03-09 16:46 ` bero at arklinux dot org
@ 2011-03-09 16:56 ` rguenth at gcc dot gnu.org
2011-03-22 10:24 ` rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2011-03-09 16:56 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48042
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |lto
--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-09 16:56:31 UTC ---
Thanks. Quoted:
class A {
virtual int x() = 0;
};
class B:public A {
int x();
};
int B::x() {
}
rguenther@murzim:/tmp/bug48042> /space/rguenther/install/gcc-4.6.0/bin/g++ -c
test.cpp -flto
rguenther@murzim:/tmp/bug48042> /space/rguenther/install/gcc-4.6.0/bin/g++
test.o -flto -g
In file included from test.cpp:10:0,
from :5:
test.cpp: In member function 'x':
test.cpp:10:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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From: rguenth at gcc dot gnu.org @ 2011-03-22 10:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48042
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |d.g.gorbachev at gmail dot
| |com
--- Comment #11 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-22 10:17:08 UTC ---
*** Bug 48225 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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2011-03-22 10:24 ` rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2011-12-09 12:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48042
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
--- Comment #12 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-09 12:08:06 UTC ---
I have a patch.
^ permalink raw reply [flat|nested] 15+ messages in thread* [Bug lto/48042] lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program
2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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From: rguenth at gcc dot gnu.org @ 2011-12-09 13:50 UTC (permalink / raw)
To: gcc-bugs
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Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.7.0
--- Comment #14 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-09 13:49:48 UTC ---
Fixed.
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2011-03-09 11:23 [Bug lto/48042] New: lto segfaults while building Qt 4.7.2 with -g -flto -fwhole-program bero at arklinux dot org
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From: rguenth at gcc dot gnu.org @ 2011-12-09 14:06 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #13 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-09 13:49:28 UTC ---
Author: rguenth
Date: Fri Dec 9 13:49:22 2011
New Revision: 182163
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182163
Log:
2011-12-09 Richard Guenther <rguenther@suse.de>
PR lto/48042
* tree.c (free_lang_data_in_decl): Remove freeing conditional
on debuginfo level.
* g++.dg/lto/pr48042_0.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/lto/pr48042_0.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree.c
^ permalink raw reply [flat|nested] 15+ messages in thread