Tracking down a problem with a much more rigorous codebase. Using this
contrived example to demonstrate the issue:
#include
using namespace std;
// static link this with pthreads to test
int main()
{
// this will exit cleanly
cout << "std::cout" << endl;
// this will segfault, why?
--- Comment #10 from rakdver at gcc dot gnu dot org 2007-11-30 00:32
---
Subject: Bug 34244
Author: rakdver
Date: Fri Nov 30 00:32:04 2007
New Revision: 130527
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130527
Log:
PR tree-optimization/34244
* tree-vrp.c (ad
--- Comment #6 from jvdelisle at gcc dot gnu dot org 2007-11-30 04:04
---
I will get on this soon.
--
jvdelisle at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #12 from jvdelisle at gcc dot gnu dot org 2007-11-30 04:18
---
Subject: Bug 34230
Author: jvdelisle
Date: Fri Nov 30 04:18:05 2007
New Revision: 130532
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130532
Log:
2007-11-29 Steven G. Kargl <[EMAIL PROTECTED]>
--- Comment #22 from jvdelisle at gcc dot gnu dot org 2007-11-30 04:14
---
Subject: Bug 33583
Author: jvdelisle
Date: Fri Nov 30 04:14:01 2007
New Revision: 130531
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130531
Log:
2007-11-29 Steven G. Kargl <[EMAIL PROTECTED]>
--- Comment #11 from jvdelisle at gcc dot gnu dot org 2007-11-30 04:11
---
Subject: Bug 34230
Author: jvdelisle
Date: Fri Nov 30 04:10:47 2007
New Revision: 130530
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130530
Log:
2007-11-29 Steven G. Kargl <[EMAIL PROTECTED]>
--- Comment #2 from bonzini at gnu dot org 2007-11-30 05:41 ---
What were the benchmarks where the cost model was slower?
--
bonzini at gnu dot org changed:
What|Removed |Added
---
--- Comment #16 from bonzini at gnu dot org 2007-11-30 05:39 ---
One suspect is fwprop. Anyone can confirm?
--
bonzini at gnu dot org changed:
What|Removed |Added
--- Comment #7 from jvdelisle at gcc dot gnu dot org 2007-11-30 05:16
---
I have retitled this to reflect a bit more correctly. The workaround in Comment
#6 almost works, but it masks another problem. The patch that caused the
regression is r129016. The test case works fine on r129015
--- Comment #10 from jvdelisle at gcc dot gnu dot org 2007-11-30 04:11
---
Subject: Bug 34203
Author: jvdelisle
Date: Fri Nov 30 04:10:47 2007
New Revision: 130530
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130530
Log:
2007-11-29 Steven G. Kargl <[EMAIL PROTECTED]>
--- Comment #5 from ek dot kato at gmail dot com 2007-11-30 02:39 ---
Maybe I could find a reliable testcase for the problem. Following program will
crash while accessing dtp->u.p.line_buffer[dtp->u.p.item_count].
IMPLICIT NONE
CHARACTER(len=10), DIMENSION(2) :: var
NAMELIST /i
I'm not really sure how to explain this one, so I'll let the attached reduced
test case do the talking. The same code compiles fine on the same machine
running g++-4.1.2-20061115 (Debian prerelease 4.1.1-21)
Output of `g++ -v`:
Reading specs from /usr/lib/gcc/i486-linux-gnu/3.4.6/specs
Configured
--- Comment #3 from ubizjak at gmail dot com 2007-11-30 06:42 ---
(In reply to comment #1)
> w/ -fvect-cost-model:
> user0m46.439s
Looking a bit into generated code, it looks that -fect-cost-model effectively
disables all interesting vectorizations, effectively -fno-tree-vectorize.
--- Comment #1 from dweatherford at facebook dot com 2007-11-30 07:00
---
Created an attachment (id=14669)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14669&action=view)
Reduced test case
The two branches of the '#if' should be functionally identical, but the one
indicated as d
--- Comment #2 from jakub at gcc dot gnu dot org 2007-11-30 07:26 ---
Fixed on the trunk.
--
jakub at gcc dot gnu dot org changed:
What|Removed |Added
Summary|
--- Comment #4 from bonzini at gnu dot org 2007-11-30 07:17 ---
So -fvect-cost-model is doing its job. The vectorizations must not be
profitable, or are they?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32086
--- Comment #7 from pault at gcc dot gnu dot org 2007-11-30 07:49 ---
(In reply to comment #5)
> Erik, Paul, as authors of the original patch and testcases, can you confirm my
> conclusion that the code in comment #4 (and thus, the
> gfortran.dg/alloc_comp_constructor_1.f90 testcase) is
--- Comment #1 from jakub at gcc dot gnu dot org 2007-11-30 07:25 ---
Subject: Bug 34275
Author: jakub
Date: Fri Nov 30 07:24:54 2007
New Revision: 130533
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130533
Log:
PR c++/34275
* error.c (dump_expr): Handle OBJ_TY
--- Comment #11 from jakub at gcc dot gnu dot org 2007-11-30 07:20 ---
Fixed, thanks.
--
jakub at gcc dot gnu dot org changed:
What|Removed |Added
Status|ASSI
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