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* [Bug middle-end/54759] New: [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris
@ 2012-09-30 10:36 ebotcazou at gcc dot gnu.org
  2012-09-30 19:05 ` [Bug middle-end/54759] " dehao at google dot com
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2012-09-30 10:36 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54759

             Bug #: 54759
           Summary: [4.8 regression] segfault for gcc.dg/vect/pr49093.c on
                    Solaris
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ebotcazou@gcc.gnu.org
                CC: dehao@gcc.gnu.org
              Host: sparc-sun-solaris2.10
            Target: sparc-sun-solaris2.10
             Build: sparc-sun-solaris2.10


We have a segfault for gcc.dg/vect/pr49093.c on SPARC/Solaris:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
0xff0ae9b0 in strlen () from /lib/libc.so.1
(gdb) bt
#0  0xff0ae9b0 in strlen () from /lib/libc.so.1
#1  0xff1134d8 in _ndoprnt () from /lib/libc.so.1
#2  0xff1154a0 in fprintf () from /lib/libc.so.1
#3  0x00743778 in vectorize_loops ()
    at /nile.build/botcazou/gcc-head/src/gcc/tree-vectorizer.c:198
#4  0x0067739c in tree_vectorize ()
    at /nile.build/botcazou/gcc-head/src/gcc/tree-ssa-loop.c:215

(gdb) frame 3
#3  0x00743778 in vectorize_loops ()
    at /nile.build/botcazou/gcc-head/src/gcc/tree-vectorizer.c:198
198                 LOC_FILE (vect_location), LOC_LINE (vect_location));
(gdb) list
193     
194             vect_location = find_loop_location (loop);
195             if (vect_location != UNKNOWN_LOC
196                 && vect_verbosity_level > REPORT_NONE)
197               fprintf (vect_dump, "\nAnalyzing loop at %s:%d\n",
198                 LOC_FILE (vect_location), LOC_LINE (vect_location));
199     
200             loop_vinfo = vect_analyze_loop (loop);
201             loop->aux = loop_vinfo;
202     
(gdb) p vect_location 
$1 = 2147483648
(gdb) call expand_location(vect_location)
$4 = {file = 0x0, line = 0, column = 0, data = 0xfb4a5ad0, sysp = false}

This is reproducible with a bare cross-compiler on x86_64-suse-linux:

gdb --args gcc/cc1 -quiet -O1 -ftree-vectorize -fdump-tree-vect-details
-fno-tree-fre -mcpu=v9 pr49093.c

(gdb) b tree-vectorizer.c:197

Breakpoint 1, vectorize_loops ()
    at /home/eric/svn/gcc/gcc/tree-vectorizer.c:198
198                 LOC_FILE (vect_location), LOC_LINE (vect_location));
(gdb) call expand_location(vect_location)
$4 = {file = 0x0, line = 0, column = 0, data = 0x7ffff68dfaa0, sysp = false}


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/54759] [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris
  2012-09-30 10:36 [Bug middle-end/54759] New: [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris ebotcazou at gcc dot gnu.org
@ 2012-09-30 19:05 ` dehao at google dot com
  2012-09-30 21:22 ` ebotcazou at gcc dot gnu.org
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: dehao at google dot com @ 2012-09-30 19:05 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54759

Dehao Chen <dehao at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dehao at google dot com

--- Comment #1 from Dehao Chen <dehao at google dot com> 2012-09-30 19:05:05 UTC ---
Thanks for reporting the bug. I prepared a patch to fix this:

http://gcc.gnu.org/ml/gcc-patches/2012-09/msg01997.html

Could you help verify if it is fixed by this?

Thanks,
Dehao


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/54759] [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris
  2012-09-30 10:36 [Bug middle-end/54759] New: [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris ebotcazou at gcc dot gnu.org
  2012-09-30 19:05 ` [Bug middle-end/54759] " dehao at google dot com
@ 2012-09-30 21:22 ` ebotcazou at gcc dot gnu.org
  2012-10-01 10:11 ` rguenth at gcc dot gnu.org
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2012-09-30 21:22 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54759

--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-09-30 21:22:35 UTC ---
> Thanks for reporting the bug. I prepared a patch to fix this:
> 
> http://gcc.gnu.org/ml/gcc-patches/2012-09/msg01997.html
> 
> Could you help verify if it is fixed by this?

The segfault disappears once the patch is applied, thanks!


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/54759] [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris
  2012-09-30 10:36 [Bug middle-end/54759] New: [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris ebotcazou at gcc dot gnu.org
  2012-09-30 19:05 ` [Bug middle-end/54759] " dehao at google dot com
  2012-09-30 21:22 ` ebotcazou at gcc dot gnu.org
@ 2012-10-01 10:11 ` rguenth at gcc dot gnu.org
  2012-10-01 16:33 ` dehao at gcc dot gnu.org
  2012-10-01 20:20 ` ebotcazou at gcc dot gnu.org
  4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-10-01 10:11 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54759

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.8.0


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/54759] [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris
  2012-09-30 10:36 [Bug middle-end/54759] New: [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris ebotcazou at gcc dot gnu.org
                   ` (2 preceding siblings ...)
  2012-10-01 10:11 ` rguenth at gcc dot gnu.org
@ 2012-10-01 16:33 ` dehao at gcc dot gnu.org
  2012-10-01 20:20 ` ebotcazou at gcc dot gnu.org
  4 siblings, 0 replies; 6+ messages in thread
From: dehao at gcc dot gnu.org @ 2012-10-01 16:33 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54759

--- Comment #3 from dehao at gcc dot gnu.org 2012-10-01 16:33:35 UTC ---
Author: dehao
Date: Mon Oct  1 16:33:23 2012
New Revision: 191931

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191931
Log:
2012-10-01  Dehao Chen  <dehao@google.com>

    PR middle-end/54759
    * gcc/tree-vect-loop-manip.c (slpeel_make_loop_iterate_ntimes): Use
    LOCATION_LOCUS to compare with UNKNOWN_LOCATION.
    (slpeel_tree_peel_loop_to_edge): Likewise.
    * gcc/tree-vectorizer.c (vectorize_loops): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-vect-loop-manip.c
    trunk/gcc/tree-vectorizer.c


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug middle-end/54759] [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris
  2012-09-30 10:36 [Bug middle-end/54759] New: [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris ebotcazou at gcc dot gnu.org
                   ` (3 preceding siblings ...)
  2012-10-01 16:33 ` dehao at gcc dot gnu.org
@ 2012-10-01 20:20 ` ebotcazou at gcc dot gnu.org
  4 siblings, 0 replies; 6+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2012-10-01 20:20 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54759

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED

--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-10-01 20:20:28 UTC ---
Thanks for the quick turn around.


^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-10-01 20:20 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-09-30 10:36 [Bug middle-end/54759] New: [4.8 regression] segfault for gcc.dg/vect/pr49093.c on Solaris ebotcazou at gcc dot gnu.org
2012-09-30 19:05 ` [Bug middle-end/54759] " dehao at google dot com
2012-09-30 21:22 ` ebotcazou at gcc dot gnu.org
2012-10-01 10:11 ` rguenth at gcc dot gnu.org
2012-10-01 16:33 ` dehao at gcc dot gnu.org
2012-10-01 20:20 ` ebotcazou at gcc dot gnu.org

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