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* [Bug tree-optimization/49916] New: matrix-reorg optimization segmentation fault
@ 2011-07-30 19:33 nbjensen at gmail dot com
2011-07-31 9:44 ` [Bug tree-optimization/49916] " rguenth at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: nbjensen at gmail dot com @ 2011-07-30 19:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49916
Summary: matrix-reorg optimization segmentation fault
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: nbjensen@gmail.com
Created attachment 24873
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24873
Source code to reproduce.
GCC 4.5.1, 4.5.2(.deb) and 4.6.0.
System: Ubuntu 11.04.
Compile options:
gcc -Wall -O3 -fwhole-program -fipa-matrix-reorg -fdump-ipa-matrix-reorg
-std=c99 double-2d-matrix.c
No errors or warnings when compiling. When running the program a segmentation
fault.
Valgrind was used to analyze memory the memory management and the memory write
A[1][0] was not allocated.
If the sizes of the matrix dimensions are changed the bug might disappear. It
seems a bit random.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug tree-optimization/49916] matrix-reorg optimization segmentation fault
2011-07-30 19:33 [Bug tree-optimization/49916] New: matrix-reorg optimization segmentation fault nbjensen at gmail dot com
@ 2011-07-31 9:44 ` rguenth at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-07-31 9:44 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49916
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-31 09:44:01 UTC ---
matrix-reorg is broken, don't use it.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-07-30 19:33 [Bug tree-optimization/49916] New: matrix-reorg optimization segmentation fault nbjensen at gmail dot com
2011-07-31 9:44 ` [Bug tree-optimization/49916] " rguenth at gcc dot gnu.org
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