[Bug testsuite/40829] New: gcc.dg/vect/no-scevccp-noreassoc-outer-2.c can segv

[Bug testsuite/40829] New: gcc.dg/vect/no-scevccp-noreassoc-outer-2.c can segv

[simon_baldwin at yahoo dot com]

>From gcc.dg/vect/no-scevccp-noreassoc-outer-2.c:

  6 #define N 40
  7 int a[200*N];
  8
  9 __attribute__ ((noinline)) void
 10 foo (){
 11   int i,j;
 12   int sum,s=0;
 13
 14   for (i = 0; i < 200*N; i++) {
 15     sum = 0;
 16     for (j = 0; j < N; j++) {
 17       sum += (i + j);
 18       i++;
 19     }
 20     a[i] = sum;  // i exceeds 8000, runs off array end
 21   }
 22 }

In function foo(), at line 20, variable 'i' can exceed the bounds of array 'a',
and segv is possible.

The fix may be as simple as padding array 'a', provided this does not affect
the other things that this test validates.


-- 
           Summary: gcc.dg/vect/no-scevccp-noreassoc-outer-2.c can segv
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: trivial
          Priority: P3
         Component: testsuite
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: simon_baldwin at yahoo dot com
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40829

[Bug testsuite/40829] gcc.dg/vect/no-scevccp-noreassoc-outer-2.c can segv

[simon_baldwin at yahoo dot com]

------- Comment #1 from simon_baldwin at yahoo dot com  2009-07-27 12:08 -------
Committed revision 150109.


-- 

simon_baldwin at yahoo dot com changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40829

[Bug testsuite/40829] gcc.dg/vect/no-scevccp-noreassoc-outer-2.c can segv

[hjl at gcc dot gnu dot org]

------- Comment #2 from hjl at gcc dot gnu dot org  2009-07-28 16:51 -------
Subject: Bug 40829

Author: hjl
Date: Tue Jul 28 16:51:19 2009
New Revision: 150169

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=150169
Log:
2009-07-28  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline:
        2009-07-27  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/40848
        * gfortran.dg/altreturn_7.f90: New.

        2009-07-27  Simon Baldwin  <simonb@google.com>

        PR testsuite/40829
        * gcc.dg/vect/no-scevccp-noreassoc-outer-2.c: Extended array 'a'
        so that indexing no longer runs off array end.

        2009-07-24  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/40822
        * gfortran.dg/char_length_16.f90: New.

Added:
    branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/altreturn_7.f90
      - copied unchanged from r150168,
trunk/gcc/testsuite/gfortran.dg/altreturn_7.f90
    branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/char_length_16.f90
      - copied unchanged from r150168,
trunk/gcc/testsuite/gfortran.dg/char_length_16.f90
Modified:
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
   
branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/vect/no-scevccp-noreassoc-outer-2.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40829