[bugs #8018] NSMutableDictionary writeToFile:atomically:

[Fred Kiefer]

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/**************************************************************************/
[bugs #8018] Latest Modifications:

Changes by: 
                Fred Kiefer <FredKiefer@gmx.de>
'Date: 
                Sun 05/09/04 at 20:11 (GMT)

            What     | Removed                   | Added
---------------------------------------------------------------------------
              Status | Open                      | Closed


------------------ Additional Follow-up Comments ----------------------------
Adopted the status field to the resolution field.






/**************************************************************************/
[bugs #8018] Full Item Snapshot:

URL: <http://savannah.gnu.org/bugs/?func=detailitem&item_id=8018>
Project: GNUstep
Submitted by: 0
On: Fri 03/05/04 at 12:06

Category:  Base/Foundation
Severity:  5 - Average
Item Group:  Bug
Resolution:  Fixed
Assigned to:  CaS
Status:  Closed


Summary:  NSMutableDictionary writeToFile:atomically:

Original Submission:  The problem is located when a Distant dictionary is an 
Object for a Key in a local dictionary and the local one has to be written to a 
file, no matter if atomically or not.
This causes a SIGSEGV on the process which registered the object trying to 
write.
It has been tested with gnustep-base 1.7.2, 1.9.0, 1.9.1, it is the same.
Tests have been performed with gcc 3.3.2 on i686 architecture.

In attacched files:
t3.m -> exports a dummyObj
t3c.m -> client, creates a dictionary and passes it as a parameter to 
t3-exported remote dummyObj.
dummy.h -> interface for 'dummyObj'
dummy.m -> implementation for 'dummyObj': creates a 1 unit dictionary 
containing the passed dictionary and writes it to file.

Possible (failed) workarounds are commented in dummy.m
On NeXT Runtime the same code runs perfectly.


Follow-up Comments
------------------


-------------------------------------------------------
Date: Sun 05/09/04 at 20:11         By: FredKiefer
Adopted the status field to the resolution field.

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Date: Tue 03/16/04 at 14:55         By: None
Thank you. Do you think the latter one to be a libffi problem and that I should 
report them it ?

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Date: Mon 03/15/04 at 18:05         By: CaS
Fixed in CVS.
One problem was the use of -getObjects: to retrieve items to write to file ... 
which can't work with distributed objects.
Another problem appeared to happed with libffi and caching a method 
implementation ... I don't understand that one and simply altered the code
a little to avoid the cachign as a workaround ... not a proper solution as, as
far as I can see, the cacheing ought to work.

-------------------------------------------------------
Date: Fri 03/05/04 at 16:25         By: None
More debugging revealed the problem is more generic: given a remote mutable 
dictionary, a [dict allKeys] call will fail by problems of the DO code.


-------------------------------------------------------
Date: Fri 03/05/04 at 12:10         By: None
my email is alessio@itapac.net






File Attachments
-------------------

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Date: Fri 03/05/04 at 12:10  Name: dummy.h  Size: 114KB   By: None
dummy header
http://savannah.gnu.org/bugs/download.php?item_id=8018&amp;item_file_id=1091

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Date: Fri 03/05/04 at 12:09  Name: dummy.m  Size: 735KB   By: None
dummyobj
http://savannah.gnu.org/bugs/download.php?item_id=8018&amp;item_file_id=1090

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Date: Fri 03/05/04 at 12:08  Name: t3c.m  Size: 481KB   By: None
client
http://savannah.gnu.org/bugs/download.php?item_id=8018&amp;item_file_id=1089

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Date: Fri 03/05/04 at 12:06  Name: t3.m  Size: 371KB   By: None
server
http://savannah.gnu.org/bugs/download.php?item_id=8018&amp;item_file_id=1088






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