[Bug middle-end/58941] [4.7 Regression] value modification on zero-length array optimized away

2014-03-18 Thread rguenth at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58941

Richard Biener  changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution|--- |FIXED

--- Comment #9 from Richard Biener  ---
Fixed.

[Bug middle-end/58941] [4.7 Regression] value modification on zero-length array optimized away

2014-03-18 Thread rguenth at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58941

--- Comment #8 from Richard Biener  ---
Author: rguenth
Date: Tue Mar 18 10:58:22 2014
New Revision: 208640

URL: http://gcc.gnu.org/viewcvs?rev=208640&root=gcc&view=rev
Log:
2014-03-18  Richard Biener  

Backport from mainline
2013-11-05  Richard Biener  

PR middle-end/58941
* tree-dfa.c (get_ref_base_and_extent): Merge common code
in MEM_REF and TARGET_MEM_REF handling.  Make sure to
process trailing array detection before diving into the
view-converted object (and possibly apply some extra offset).

* gcc.dg/torture/pr58941.c: New testcase.

2012-05-07  Eric Botcazou  

* tree-dfa.c (get_ref_base_and_extent) : Do the offset
computation using the precision of the index type.

2012-05-31  Eric Botcazou  

* tree-dfa.c (get_ref_base_and_extent): Compute the offset using
double ints throughout.

Added:
branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr58941.c
Modified:
branches/gcc-4_7-branch/gcc/ChangeLog
branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
branches/gcc-4_7-branch/gcc/tree-dfa.c

[Bug middle-end/58941] [4.7 Regression] value modification on zero-length array optimized away

2013-11-27 Thread rguenther at suse dot de 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58941

--- Comment #7 from rguenther at suse dot de  ---
On Wed, 27 Nov 2013, thomas.moschcau at web dot de wrote:

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58941
> 
> --- Comment #6 from Thomas Moschcau  ---
> (In reply to Richard Biener from comment #5)
> > And 4.8.3.
> 
> Hello Richard,
> will there also be a fix for gcc 4.6.x?

No, gcc 4.6 is no longer maintained.

[Bug middle-end/58941] [4.7 Regression] value modification on zero-length array optimized away

2013-11-27 Thread thomas.moschcau at web dot de 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58941

--- Comment #6 from Thomas Moschcau  ---
(In reply to Richard Biener from comment #5)
> And 4.8.3.

Hello Richard,
will there also be a fix for gcc 4.6.x?
Kind Regards
Thomas

[Bug middle-end/58941] [4.7 Regression] value modification on zero-length array optimized away

2013-11-19 Thread rguenth at gcc dot gnu.org 
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58941

Richard Biener  changed:

   What|Removed |Added

  Known to work||4.8.3
Summary|[4.7/4.8 Regression] value  |[4.7 Regression] value
   |modification on zero-length |modification on zero-length
   |array optimized away|array optimized away

--- Comment #5 from Richard Biener  ---
And 4.8.3.