[Bug tree-optimization/52721] New: segfault in vect_init_vector

[Bug tree-optimization/52721] New: segfault in vect_init_vector

[amodra at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52721

             Bug #: 52721
           Summary: segfault in vect_init_vector
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: amodra@gmail.com


Created attachment 26996
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26996
preprocessed source

gcc.dg/vect/pr22480.c is failing on powerpc-linux due to the call from
tree-vect-stmts.c:3167 passing a non-vector type for vector_type.

compile with cc1 -fpreprocessed pr22480.i -msecure-plt -quiet -dumpbase
pr22480.c -maltivec -mvsx -mno-allow-movmisalign -m32 -auxbase-strip pr22480.s
-O2 -version -ftree-vectorize -fno-vect-cost-model -fdump-tree-vect-details -o
pr22480.s

[Bug tree-optimization/52721] segfault in vect_init_vector

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52721

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-03-26
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-03-26 11:17:02 UTC ---
Created attachment 26997
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26997
patch

I can't seem to reproduce it with a cross.  Can you check if the following
fixes it?

[Bug tree-optimization/52721] segfault in vect_init_vector

[amodra at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52721

Alan Modra <amodra at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |UNCONFIRMED
     Ever Confirmed|1                           |0

--- Comment #2 from Alan Modra <amodra at gmail dot com> 2012-03-26 12:34:52 UTC ---
Yes, that patch cures the segfaults.

[Bug tree-optimization/52721] segfault in vect_init_vector

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52721

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-03-26 14:13:43 UTC ---
Author: rguenth
Date: Mon Mar 26 14:13:35 2012
New Revision: 185799

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=185799
Log:
2012-03-26  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/52721
    * tree-vect-stmts.c (vect_init_vector): Handle scalars.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-vect-stmts.c

[Bug tree-optimization/52721] segfault in vect_init_vector

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52721

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

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

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-03-26 14:16:02 UTC ---
Fixed.