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* [Bug objc/44887]  New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
@ 2010-07-09 13:55 ro at gcc dot gnu dot org
  2010-07-09 16:29 ` [Bug objc/44887] " ebotcazou at gcc dot gnu dot org
                   ` (9 more replies)
  0 siblings, 10 replies; 11+ messages in thread
From: ro at gcc dot gnu dot org @ 2010-07-09 13:55 UTC (permalink / raw)
  To: gcc-bugs

Between 20100628 and 20100705, all Objective-C execution tests started to fail
on
Solaris 2/SPARC.  E.g,

FAIL: objc.dg/bitfield-1.m -fgnu-runtime execution test

bitfield-1.exe SEGVs with this stacktrace:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
sel_get_name (selector=0x0) at
/vol/gcc/src/hg/trunk/solaris/libobjc/selector.c:299
(gdb) where
#0  sel_get_name (selector=0x0) at
/vol/gcc/src/hg/trunk/solaris/libobjc/selector.c:299
#1  0xfeb7e8a0 in -[Object notImplemented:] (self=0x20eb4, _cmd=0xfeb97c5c,
aSel=0x0) at /vol/gcc/src/hg/trunk/solaris/libobjc/Object.m:306
#2  0xfeb7e420 in +[Object conformsTo:] (self=<value optimized out>,
_cmd=<value optimized out>, aProtocol=0xfea35800) at
/vol/gcc/src/hg/trunk/solaris/libobjc/Object.m:213
#3  0x00010af4 in main ()

The selector argument to sel_get_name is NULL, so a NULL pointer is
dereferenced.
Unless there is a generic code generation bug here, I strongly suspect this
patch:

2010-07-03  Nathan Froyd  <froydnj@codesourcery.com>

        PR objc/24867
        * objc-act.c (build_sized_array_type): New function.
        (add_objc_string): Use it.
        (generate_protocol_list): Likewise.
        (generate_objc_image_info): Likewise.
        (add_field_decl): New function.
        (objc_build_struct): Use a VEC rather than building a TREE_LIST.
        (generate_struct_by_value_array): Use add_field_decl.
        (build_objc_symtab_template): Likewise.
        (build_module_descriptor): Likewise.
        (build_objc_exception_stuff): Likewise.
        (build_protocol_template): Likewise.
        (build_method_prototype_list_template): Likewise.
        (build_method_prototype_template): Likewise.
        (build_category_template): Likewise.
        (build_selector_template): Likewise.
        (build_class_template): Likewise.
        (build_super_template): Likewise.
        (build_ivar_template): Likewise.
        (build_ivar_list_template): Likewise.
        (build_method_list_template): Likewise.


-- 
           Summary: [4.6 regression] All Objective-C execution tests fail on
                    Solaris 2/SPARC
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: objc
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at gcc dot gnu dot org
 GCC build triplet: sparc-sun-solaris2*
  GCC host triplet: sparc-sun-solaris2*
GCC target triplet: sparc-sun-solaris2*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
@ 2010-07-09 16:29 ` ebotcazou at gcc dot gnu dot org
  2010-07-09 16:34 ` ro at CeBiTec dot Uni-Bielefeld dot DE
                   ` (8 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: ebotcazou at gcc dot gnu dot org @ 2010-07-09 16:29 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from ebotcazou at gcc dot gnu dot org  2010-07-09 16:29 -------
On Solaris 9:

                === objc Summary ===

# of expected passes            767
# of unexpected failures        34
# of expected failures          7
# of unsupported tests          28

I wonder if there isn't a miscompilation somewhere though.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-07-09 16:29:21
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
  2010-07-09 16:29 ` [Bug objc/44887] " ebotcazou at gcc dot gnu dot org
@ 2010-07-09 16:34 ` ro at CeBiTec dot Uni-Bielefeld dot DE
  2010-07-09 18:27 ` mikpe at it dot uu dot se
                   ` (7 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: ro at CeBiTec dot Uni-Bielefeld dot DE @ 2010-07-09 16:34 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #2 from ro at CeBiTec dot Uni-Bielefeld dot DE  2010-07-09 16:34 -------
Subject: Re:  [4.6 regression] All Objective-C execution tests fail on Solaris
2/SPARC

> ------- Comment #1 from ebotcazou at gcc dot gnu dot org  2010-07-09 16:29 -------
> On Solaris 9:
>
>                 === objc Summary ===
>
> # of expected passes            767
> # of unexpected failures        34
> # of expected failures          7
> # of unsupported tests          28
>
> I wonder if there isn't a miscompilation somewhere though.

Seems so, yes.  A tree one rev. before Nathan's patch fails the same
way, so this isn't the culprit.  Reghunt in progress, though I'm not
sure if I can get it finished before leaving for the weekend.

        Rainer


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
  2010-07-09 16:29 ` [Bug objc/44887] " ebotcazou at gcc dot gnu dot org
  2010-07-09 16:34 ` ro at CeBiTec dot Uni-Bielefeld dot DE
@ 2010-07-09 18:27 ` mikpe at it dot uu dot se
  2010-07-09 18:30 ` ro at CeBiTec dot Uni-Bielefeld dot DE
                   ` (6 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: mikpe at it dot uu dot se @ 2010-07-09 18:27 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #3 from mikpe at it dot uu dot se  2010-07-09 18:27 -------
These new objc failures are also seen on sparc64-linux btw.


-- 

mikpe at it dot uu dot se changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mikpe at it dot uu dot se


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
                   ` (2 preceding siblings ...)
  2010-07-09 18:27 ` mikpe at it dot uu dot se
@ 2010-07-09 18:30 ` ro at CeBiTec dot Uni-Bielefeld dot DE
  2010-07-09 19:04 ` ro at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: ro at CeBiTec dot Uni-Bielefeld dot DE @ 2010-07-09 18:30 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #4 from ro at CeBiTec dot Uni-Bielefeld dot DE  2010-07-09 18:30 -------
Subject: Re:  [4.6 regression] All Objective-C execution tests fail on Solaris
2/SPARC

The reghunt revealed Richard's mem-ref2 patch as the culprit:

2010-07-01  Richard Guenther  <rguenther@suse.de>

        PR middle-end/42834
        PR middle-end/44468
        * doc/gimple.texi (is_gimple_mem_ref_addr): Document.
        * doc/generic.texi (References to storage): Document MEM_REF.

I'm now trying to find out where the miscompilation is.

        Rainer


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
                   ` (3 preceding siblings ...)
  2010-07-09 18:30 ` ro at CeBiTec dot Uni-Bielefeld dot DE
@ 2010-07-09 19:04 ` ro at gcc dot gnu dot org
  2010-07-09 19:06 ` ro at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: ro at gcc dot gnu dot org @ 2010-07-09 19:04 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #5 from ro at gcc dot gnu dot org  2010-07-09 19:04 -------
I've found that sarray.o is miscompiled.  The only code changes are in
sarray_at_put and sarray_put_safe, where sarray_at_put is inlined.  I've not
yet found what is broken.  I'm attaching the good and bad .s files and the
preprocessed source for reference.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
                   ` (5 preceding siblings ...)
  2010-07-09 19:06 ` ro at gcc dot gnu dot org
@ 2010-07-09 19:06 ` ro at gcc dot gnu dot org
  2010-07-09 19:07 ` ro at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: ro at gcc dot gnu dot org @ 2010-07-09 19:06 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #6 from ro at gcc dot gnu dot org  2010-07-09 19:05 -------
Created an attachment (id=21165)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21165&action=view)
preprocessed source code


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
                   ` (4 preceding siblings ...)
  2010-07-09 19:04 ` ro at gcc dot gnu dot org
@ 2010-07-09 19:06 ` ro at gcc dot gnu dot org
  2010-07-09 19:06 ` ro at gcc dot gnu dot org
                   ` (3 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: ro at gcc dot gnu dot org @ 2010-07-09 19:06 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #7 from ro at gcc dot gnu dot org  2010-07-09 19:06 -------
Created an attachment (id=21166)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21166&action=view)
good assembler output pre-patch


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
                   ` (6 preceding siblings ...)
  2010-07-09 19:06 ` ro at gcc dot gnu dot org
@ 2010-07-09 19:07 ` ro at gcc dot gnu dot org
  2010-07-24 21:45 ` ebotcazou at gcc dot gnu dot org
  2010-07-25  7:09 ` ebotcazou at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: ro at gcc dot gnu dot org @ 2010-07-09 19:07 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #8 from ro at gcc dot gnu dot org  2010-07-09 19:07 -------
Created an attachment (id=21167)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21167&action=view)
bad assembler output with patch


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
                   ` (7 preceding siblings ...)
  2010-07-09 19:07 ` ro at gcc dot gnu dot org
@ 2010-07-24 21:45 ` ebotcazou at gcc dot gnu dot org
  2010-07-25  7:09 ` ebotcazou at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: ebotcazou at gcc dot gnu dot org @ 2010-07-24 21:45 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #9 from ebotcazou at gcc dot gnu dot org  2010-07-24 21:44 -------
Investigating.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |ebotcazou at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2010-07-09 16:29:21         |2010-07-24 21:44:57
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [Bug objc/44887] [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC
  2010-07-09 13:55 [Bug objc/44887] New: [4.6 regression] All Objective-C execution tests fail on Solaris 2/SPARC ro at gcc dot gnu dot org
                   ` (8 preceding siblings ...)
  2010-07-24 21:45 ` ebotcazou at gcc dot gnu dot org
@ 2010-07-25  7:09 ` ebotcazou at gcc dot gnu dot org
  9 siblings, 0 replies; 11+ messages in thread
From: ebotcazou at gcc dot gnu dot org @ 2010-07-25  7:09 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #10 from ebotcazou at gcc dot gnu dot org  2010-07-25 07:09 -------
On Solaris 8:

                === objc Summary ===

# of expected passes            1983
# of expected failures          15
# of unsupported tests          28


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44887


^ permalink raw reply	[flat|nested] 11+ messages in thread
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2010-07-09 16:29 ` [Bug objc/44887] " ebotcazou at gcc dot gnu dot org
2010-07-09 16:34 ` ro at CeBiTec dot Uni-Bielefeld dot DE
2010-07-09 18:27 ` mikpe at it dot uu dot se
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