[Bug objc/18408] New: ICE compiling code that involves casting classes

[Bug objc/18408] New: ICE compiling code that involves casting classes

[mgd at santafe dot edu]

This program causes an ICE in today's sources.

-- 
           Summary: ICE compiling code that involves casting classes
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: objc
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mgd at santafe dot edu
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-apple-darwin7.5.0, i686-pc-linux-gnu
  GCC host triplet: powerpc-apple-darwin7.5.0, i686-pc-linux-gnu
GCC target triplet: powerpc-apple-darwin7.5.0, i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] ICE compiling code that involves casting classes

[mgd at santafe dot edu]

------- Additional Comments From mgd at santafe dot edu  2004-11-09 22:51 -------
Created an attachment (id=7506)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7506&action=view)
Code that causes ICE to Objective C compiler

mgd@arrow[~] $ gcc -v		 
Reading specs from /packages/gcc/lib/gcc/i686-pc-linux-gnu/4.0.0/specs
Configured with: /src/gcc/configure --prefix=/packages/gcc --srcdir=/src/gcc
Thread model: posix
gcc version 4.0.0 20041109 (experimental)

$ gcc in.m -lobjc
in.m: In function '-[ListIndex(linked) _next]':
in.m:35: internal compiler error: in check_pointer_types_r, at gimplify.c:4214
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Compare to:
$ gcc -DCAST_TYPE=List in.m -lobjc


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-09 23:16 -------
Confirmed, reduced testcase:
@interface List
{
@public
  int firstLink;
}
@end

@interface ListIndex_linked
{
@public
  List *collection;
  int link;
}
@end

@interface List_linked: List
@end

@implementation List
@end

@implementation ListIndex_linked
- next
{
   link = ((List_linked*)collection)->firstLink;
}
@end

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
  GCC build triplet|powerpc-apple-darwin7.5.0,  |
                   |i686-pc-linux-gnu           |
   GCC host triplet|powerpc-apple-darwin7.5.0,  |
                   |i686-pc-linux-gnu           |
 GCC target triplet|powerpc-apple-darwin7.5.0,  |
                   |i686-pc-linux-gnu           |
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2004-11-09 23:16:51
               date|                            |
            Summary|ICE compiling code that     |[4.0 Regression] ICE
                   |involves casting classes    |compiling code that involves
                   |                            |casting classes
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-09 23:26 -------
This is a recent regression because it was fine with 20041019.
I think it was caused by:
2004-11-02  Ziemowit Laski  <zlaski@apple.com>
        
        * c-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Remove.
        (c_types_compatible_p): Move function definition...
        * c-objc-common.c (c_types_compatible_p): ...here. 
        * c-objc-common.h (LANG_HOOKS_TYPES_COMPATIBLE_P): Moved here from
        c-lang.c.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |zlaski at apple dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[zlaski at apple dot com]

------- Additional Comments From zlaski at apple dot com  2004-11-09 23:34 -------
I'll take a look.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2004-11-09 23:16:51         |2004-11-09 23:34:24
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[zlaski at apple dot com]

------- Additional Comments From zlaski at apple dot com  2004-11-12 01:36 -------
Patch posted here:

    http://gcc.gnu.org/ml/gcc-patches/2004-11/msg00925.html

Awaiting feedback.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[mgd at santafe dot edu]

------- Additional Comments From mgd at santafe dot edu  2004-11-12 04:27 -------
Fwiw, this does prevent the related ICEs I had..

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-27 19:46 -------
This should not be in waiting (waiting is mainly to get information from the reporter and not other 
developers).

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
   Last reconfirmed|2004-11-09 23:34:24         |2004-11-27 19:46:20
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-02 00:49 -------
*** Bug 18771 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lars dot sonchocky-helldorf
                   |                            |at hamburg dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2005-01-19 22:46 -------
Objective-C is not part of the release criteria; removing target milestone.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.0                       |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-01-19 22:49 -------
(In reply to comment #9)
> Objective-C is not part of the release criteria; removing target milestone.

I should note that this PR blocks building GNUstep with 4.0.0.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[lars dot sonchocky-helldorf at hamburg dot de]

------- Additional Comments From lars dot sonchocky-helldorf at hamburg dot de  2005-01-20 20:43 -------
(In reply to comment #9)
> Objective-C is not part of the release criteria; removing target milestone.

Mark, allow me to mention that GCC offers the only free Objective-C compiler with modern features 
(like Categories and Exceptions) and is as such the only free Objective-C Compiler available to the 
GNUstep ( http://www.gnustep.org/ ) and swarm ( http://www.swarm.org/ ) folks (The other free 
Objective-C Compiler is POC ( http://users.pandora.be/stes/compiler.html ) which has the problem 
that it's Maintainer David Stes is constantly fighting any additions which would make POC useful for 
other stuff than it's own small class library).

Whoever decides what the release criteria are should put that into consideration. 

regards, Lars

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[zlaski at apple dot com]

------- Additional Comments From zlaski at apple dot com  2005-01-20 21:48 -------
Of course, for this particular bug, someone could just review the patch that I posted two months ago...

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-01-21 00:15 -------
*** Bug 19553 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rogelio at smsglobal dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-01-22 15:23 -------
With --disable-checking, we get the correct code but we don't get an ICE.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-checking


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-01-25 03:13 -------
Subject: Bug 18408

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	pinskia@gcc.gnu.org	2005-01-25 03:13:11

Modified files:
	gcc/objc       : ChangeLog objc-act.c objc-act.h objc-lang.c 

Log message:
	2005-01-25  Alexander Malmberg  <alexander@malmberg.org>
	
	PR objc/18408
	* objc-act.c (objc_types_compatible_p): New function.
	* objc-act.h (objc_types_compatible_p): Declare.
	* objc-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/objc/ChangeLog.diff?cvsroot=gcc&r1=1.25&r2=1.26
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/objc/objc-act.c.diff?cvsroot=gcc&r1=1.262&r2=1.263
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/objc/objc-act.h.diff?cvsroot=gcc&r1=1.33&r2=1.34
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/objc/objc-lang.c.diff?cvsroot=gcc&r1=1.52&r2=1.53



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-01-25 03:16 -------
Subject: Bug 18408

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	pinskia@gcc.gnu.org	2005-01-25 03:16:48

Modified files:
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/objc.dg: comp-types-7.m 

Log message:
	2005-01-25  Alexander Malmberg  <alexander@malmberg.org>
	
	PR objc/18408
	* objc.dg/comp-types-7.m: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4933&r2=1.4934
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/objc.dg/comp-types-7.m.diff?cvsroot=gcc&r1=1.1&r2=1.2



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408

[Bug objc/18408] [4.0 Regression] ICE compiling code that involves casting classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-01-25 03:18 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18408