[Bug middle-end/20794] [4.0/4.1 Regression] Arrays and pointer arithmetic on __attribute ((aligned)) types permitted

[pinskia at gcc dot gnu dot org]

--- Comment #22 from pinskia at gcc dot gnu dot org  2005-10-13 20:13 
---
Fixed in 4.1.0.


-- 

pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution||FIXED
   Target Milestone|4.0.3   |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20794

[Bug middle-end/20794] [4.0/4.1 Regression] Arrays and pointer arithmetic on __attribute ((aligned)) types permitted

[mmitchel at gcc dot gnu dot org]

-- 
   What|Removed |Added

   Target Milestone|4.0.2   |4.0.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20794

[Bug middle-end/20794] [4.0/4.1 Regression] Arrays and pointer arithmetic on __attribute ((aligned)) types permitted

[mmitchel at gcc dot gnu dot org]

-- 
   What|Removed |Added

   Target Milestone|4.0.1   |4.0.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20794

[Bug middle-end/20794] [4.0/4.1 Regression] Arrays and pointer arithmetic on __attribute ((aligned)) types permitted

[dorit at il dot ibm dot com]

--- Additional Comments From dorit at il dot ibm dot com  2005-05-02 14:14 
---
see patch: http://gcc.gnu.org/ml/gcc-patches/2005-04/msg02874.html



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20794

[Bug middle-end/20794] [4.0/4.1 Regression] Arrays and pointer arithmetic on __attribute ((aligned)) types permitted

[dorit at il dot ibm dot com]

--- Additional Comments From dorit at il dot ibm dot com  2005-04-27 08:59 
---
(In reply to comment #18)
 I submitted a patch, http://gcc.gnu.org/ml/gcc-patches/2005-04/msg02284.html,
 but as the mail says it results in a lot of regressions in the compat and
 vector tests.

I'll see what I can do about the vector tests.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20794

[Bug middle-end/20794] [4.0/4.1 Regression] Arrays and pointer arithmetic on __attribute ((aligned)) types permitted

[sje at cup dot hp dot com]

--- Additional Comments From sje at cup dot hp dot com  2005-04-27 19:44 
---
It looks like most of the compat tests have been fixed but I still get two
failures.  They are tmpdir-gcc.dg-struct-layout-1/t002 and
tmpdir-gcc.dg-struct-layout-1/t027.  I cut down t002 and wound up with

void * __attribute__((aligned (8))) a[2];

I am not sure if this is supposed to apply the alignment to the array as a whole
or to the elements.  It appears to be applying it to the elements.  If it is
supposed to apply it to the elements then it is an illegal test, if it is
supposed to apply it to the array as a whole then it is a compiler bug.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20794

[Bug middle-end/20794] [4.0/4.1 Regression] Arrays and pointer arithmetic on __attribute ((aligned)) types permitted

[sje at cup dot hp dot com]

--- Additional Comments From sje at cup dot hp dot com  2005-04-22 20:22 
---
I submitted a patch, http://gcc.gnu.org/ml/gcc-patches/2005-04/msg02284.html,
but as the mail says it results in a lot of regressions in the compat and
vector tests.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20794

[Bug middle-end/20794] [4.0/4.1 Regression] Arrays and pointer arithmetic on __attribute ((aligned)) types permitted

[mmitchel at gcc dot gnu dot org]

--- Additional Comments From mmitchel at gcc dot gnu dot org  2005-04-17 
17:06 ---
Joseph, RTH, and I all feel this should be invalid code.  I think that's
consensus.  So, I've updated the PR.  Patches to actually issue a diagnostic
would be welcome.

-- 
   What|Removed |Added

   Keywords|wrong-code  |accepts-invalid
Summary|[4.0/4.1 Regression]|[4.0/4.1 Regression] Arrays
   |Miscompilation with |and pointer arithmetic on
   |__attribute ((aligned)) |__attribute ((aligned))
   ||types permitted


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20794