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* [Bug middle-end/50700] New: [4.6/4.7 Regression] __builtin_object_size computed wrong
@ 2011-10-12  9:56 rguenth at gcc dot gnu.org
  2011-10-12  9:57 ` [Bug middle-end/50700] " rguenth at gcc dot gnu.org
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-12  9:56 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50700

             Bug #: 50700
           Summary: [4.6/4.7 Regression] __builtin_object_size computed
                    wrong
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: rguenth@gcc.gnu.org


extern void abort (void);
struct S {
    int len;
    char s[0];
};
int main()
{
  char buf[sizeof (struct S) + 32];
  if (__builtin_object_size (((struct S *)&buf[0])->s, 1) != 32)
    abort ();
  return 0;
}


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug middle-end/50700] [4.6/4.7 Regression] __builtin_object_size computed wrong
  2011-10-12  9:56 [Bug middle-end/50700] New: [4.6/4.7 Regression] __builtin_object_size computed wrong rguenth at gcc dot gnu.org
@ 2011-10-12  9:57 ` rguenth at gcc dot gnu.org
  2011-10-12 13:20 ` rguenth at gcc dot gnu.org
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-12  9:57 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50700

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011-10-12
      Known to work|                            |4.5.3
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.6.2
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-12 09:56:33 UTC ---
I have a patch.


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug middle-end/50700] [4.6/4.7 Regression] __builtin_object_size computed wrong
  2011-10-12  9:56 [Bug middle-end/50700] New: [4.6/4.7 Regression] __builtin_object_size computed wrong rguenth at gcc dot gnu.org
  2011-10-12  9:57 ` [Bug middle-end/50700] " rguenth at gcc dot gnu.org
@ 2011-10-12 13:20 ` rguenth at gcc dot gnu.org
  2011-10-12 13:22 ` rguenth at gcc dot gnu.org
  2011-10-12 14:27 ` rguenth at gcc dot gnu.org
  3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-12 13:20 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50700

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-12 13:19:38 UTC ---
Author: rguenth
Date: Wed Oct 12 13:19:34 2011
New Revision: 179850

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179850
Log:
2011-10-12  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/50700
    * tree-object-size.c (addr_object_size): Simplify and treat
    MEM_REF bases consistently.

    * gcc.dg/builtin-object-size-12.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/builtin-object-size-12.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-object-size.c


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug middle-end/50700] [4.6/4.7 Regression] __builtin_object_size computed wrong
  2011-10-12  9:56 [Bug middle-end/50700] New: [4.6/4.7 Regression] __builtin_object_size computed wrong rguenth at gcc dot gnu.org
  2011-10-12  9:57 ` [Bug middle-end/50700] " rguenth at gcc dot gnu.org
  2011-10-12 13:20 ` rguenth at gcc dot gnu.org
@ 2011-10-12 13:22 ` rguenth at gcc dot gnu.org
  2011-10-12 14:27 ` rguenth at gcc dot gnu.org
  3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-12 13:22 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50700

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-12 13:22:18 UTC ---
Author: rguenth
Date: Wed Oct 12 13:22:12 2011
New Revision: 179851

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179851
Log:
2011-10-12  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/50700
    * tree-object-size.c (addr_object_size): Simplify and treat
    MEM_REF bases consistently.

    * gcc.dg/builtin-object-size-12.c: New testcase.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/builtin-object-size-12.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_6-branch/gcc/tree-object-size.c


^ permalink raw reply	[flat|nested] 5+ messages in thread
* [Bug middle-end/50700] [4.6/4.7 Regression] __builtin_object_size computed wrong
  2011-10-12  9:56 [Bug middle-end/50700] New: [4.6/4.7 Regression] __builtin_object_size computed wrong rguenth at gcc dot gnu.org
                   ` (2 preceding siblings ...)
  2011-10-12 13:22 ` rguenth at gcc dot gnu.org
@ 2011-10-12 14:27 ` rguenth at gcc dot gnu.org
  3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-12 14:27 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50700

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

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

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-12 14:26:42 UTC ---
Fixed.


^ permalink raw reply	[flat|nested] 5+ messages in thread
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2011-10-12  9:56 [Bug middle-end/50700] New: [4.6/4.7 Regression] __builtin_object_size computed wrong rguenth at gcc dot gnu.org
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2011-10-12 13:20 ` rguenth at gcc dot gnu.org
2011-10-12 13:22 ` rguenth at gcc dot gnu.org
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