[Bug libobjc/50428] New: Consider changing semantics of +initialize so that it is inherited

[Bug libobjc/50428] New: Consider changing semantics of +initialize so that it is inherited

[nicola at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50428

             Bug #: 50428
           Summary: Consider changing semantics of +initialize so that it
                    is inherited
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: libobjc
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: nicola@gcc.gnu.org


One of the remaining differences between the GNU Objective-C runtime and the
Apple one is that +initialize methods are inherited in the Apple runtime but
not in the GNU one.

To reduce differences, we could change the GNU runtime to inherit them too. 
This
is a change in behaviour and should be clearly advertised in the release notes.

Thanks

[Bug libobjc/50428] Consider changing semantics of +initialize so that it is inherited

[nicola at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50428

Nicola Pero <nicola at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-09-16
     Ever Confirmed|0                           |1

--- Comment #1 from Nicola Pero <nicola at gcc dot gnu.org> 2011-09-16 08:04:13 UTC ---
We should also document +initialize in the GCC Manual, no matter if we keep the
existing semantics or change them.

Thanks

[Bug libobjc/50428] Consider changing semantics of +initialize so that it is inherited

[nicola at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50428

--- Comment #2 from Nicola Pero <nicola at gcc dot gnu.org> 2011-10-08 17:52:11 UTC ---
Author: nicola
Date: Sat Oct  8 17:52:06 2011
New Revision: 179711

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179711
Log:
In libobjc/:
2011-10-08  Richard Frith-Macdonald <rfm@gnu.org>
            Nicola Pero  <nicola.pero@meta-innovation.com>

    PR libobjc/50428
    * sendmsg.c (__objc_send_initialize): If a class does not have an
    +initialize method, search for an +initialize method in the
    superclass and in the ancestor classes and execute the first one
    that is found.  This makes the GNU runtime behave in the same way
    as the Apple/NeXT runtime with respect to +initialize methods and
    subclassing.

In gcc/:
2011-10-08  Nicola Pero  <nicola.pero@meta-innovation.com>

    PR libobjc/50428
    * doc/objc.texi (Garbage Collection): Updated example to protect
    +initialize against execution in subclasses.

In gcc/testsuite/:
2011-10-08  Nicola Pero  <nicola.pero@meta-innovation.com>

    PR libobjc/50428    
    * objc/execute/initialize-1.m: New test.

Added:
    trunk/gcc/testsuite/objc/execute/initialize-1.m
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/doc/objc.texi
    trunk/gcc/testsuite/ChangeLog
    trunk/libobjc/ChangeLog
    trunk/libobjc/sendmsg.c

[Bug libobjc/50428] Consider changing semantics of +initialize so that it is inherited

[nicola at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50428

Nicola Pero <nicola at gcc dot gnu.org> changed:

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

--- Comment #3 from Nicola Pero <nicola at gcc dot gnu.org> 2011-10-08 17:56:09 UTC ---
Implemented in trunk.  The change will appear in 4.7.0.

Thanks