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ObjectiveC2 problems

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	ObjectiveC2 problems by Niels Grewe :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Hello all, I'm having some problems with blocks using the ObjectiveC2 framework. I can savely link a library which uses blocks to libObjectiveC2, but as soon as I link a tool or application to it, it crashes at startup - no matter what compiler and feature combination I use (or what the actual code in the tool is). The crash occures specifically when the ObjectPlanes category on NSObject is loaded and the class initialized. It is trying to send an -objectPlane message to objc_msg_sender which is 0x0 and thus fails. It seems to me that the variable is not even set at that point. (at least if it's correct to assume that it is only set from objc_msg_lookup_sender()). Any pointers are greatly appreciated. Cheers, Niels _______________________________________________ Etoile-discuss mailing list Etoile-discuss@... https://mail.gna.org/listinfo/etoile-discuss
	Re: ObjectiveC2 problems by Niels Grewe :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On Thu, Jun 18, 2009 at 01:55:01PM +0200, Niels Grewe wrote: > I'm having some problems with blocks using the ObjectiveC2 framework. Forgot to attach the backtrace: (gdb) bt full #0 0x0000000000000002 in ?? () No symbol table info available. #1 0x00007f708f4a20c2 in +[NSObject(ObjectPlanes) alloc] (self=0x7f70907d8ea0, _cmd=0x7f70907e3960) at ObjectPlanes.m:101 No locals. #2 0x00007f70903661dc in +[NSObject new] (self=0x7f70907d8ea0, _cmd=0x7f70907e38d0) at NSObject.m:1134 No locals. #3 0x00007f7090365f28 in +[NSObject initialize] (self=0x7f70907e3760, _cmd=0x7f709082ea30) at NSObject.m:987 No locals. #4 0x00007f708f291644 in __objc_send_initialize (class=0x7f7090808340) at /build/buildd-gcc-4.4_4.4.0-5-amd64-YWUgFt/gcc-4.4-4.4.0/src/libobjc/sendmsg.c:359 __PRETTY_FUNCTION__ = "__objc_send_initialize" #5 0x00007f708f291644 in __objc_send_initialize (class=0x7f70907921a0) at /build/buildd-gcc-4.4_4.4.0-5-amd64-YWUgFt/gcc-4.4-4.4.0/src/libobjc/sendmsg.c:359 __PRETTY_FUNCTION__ = "__objc_send_initialize" #6 0x00007f708f291a3c in objc_msg_lookup (receiver=0x7f70907921a0, op=<value optimized out>) at /build/buildd-gcc-4.4_4.4.0-5-amd64-YWUgFt/gcc-4.4-4.4.0/src/libobjc/sendmsg.c:328 result = <value optimized out> #7 0x00007f708f4a1d71 in +[ETObjectPlane load] (self=0x7f708f6a5120, _cmd=0x156e760) at ObjectPlanes.m:61 No locals. #8 0x00007f708f28db00 in objc_preorder_traverse (tree=0x7f708f6a40e8, level=-1888857536) at /build/buildd-gcc-4.4_4.4.0-5-amd64-YWUgFt/gcc-4.4-4.4.0/src/libobjc/init.c:310 node = <value optimized out> #9 0x00007f708f28db1a in objc_preorder_traverse (tree=<value optimized out>, level=<value optimized out>) at /build/buildd-gcc-4.4_4.4.0-5-amd64-YWUgFt/gcc-4.4-4.4.0/src/libobjc/init.c:312 node = (struct objc_list ) 0x15bce70 #10 0x00007f708f28e5d8 in __objc_exec_class (module=0x0) at /build/buildd-gcc-4.4_4.4.0-5-amd64-YWUgFt/gcc-4.4-4.4.0/src/libobjc/init.c:752 previous_constructors = 1 '\001' unclaimed_categories = (struct objc_list ) 0x1586df0 symtab = <value optimized out> cell = <value optimized out> selectors = <value optimized out> i = 0 __PRETTY_FUNCTION__ = "__objc_exec_class" #11 0x00007f7090289810 in __objc_gnu_init () at GSSocketStream.m:2740 No locals. #12 0x00007f7090452d16 in __do_global_ctors_aux () from /usr/GNUstep/System/Library/Libraries/x86_64/linux-gnu/gnu-gnu-gnu/libgnustep-base.so.1.19 No locals. #13 0x00007f709025acdb in _init () from /usr/GNUstep/System/Library/Libraries/x86_64/linux-gnu/gnu-gnu-gnu/libgnustep-base.so.1.19 No locals. #14 0x00007fff98a77298 in ?? () No symbol table info available. #15 0x00007f709086a778 in ?? () from /lib64/ld-linux-x86-64.so.2 No symbol table info available. #16 0x00007f709086a8a7 in ?? () from /lib64/ld-linux-x86-64.so.2 No symbol table info available. #17 0x00007f709085daca in ?? () from /lib64/ld-linux-x86-64.so.2 No symbol table info available. #18 0x0000000000000001 in ?? () No symbol table info available. #19 0x00007fff98a78b89 in ?? () No symbol table info available. #20 0x0000000000000000 in ?? () No symbol table info available. (gdb) up #1 0x00007f708f4a20c2 in +[NSObject(ObjectPlanes) alloc] (self=0x7f70907d8ea0, _cmd=0x7f70907e3960) at ObjectPlanes.m:101 101 return [self allocInPlane: [objc_msg_sender objectPlane]]; (gdb) print objc_msg_sender $1 = (struct objc_object *) 0x0 _______________________________________________ Etoile-discuss mailing list Etoile-discuss@... https://mail.gna.org/listinfo/etoile-discuss
	Re: ObjectiveC2 problems by David Chisnall :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message The ObjectPlanes code requires everything to be built with -fobjc- sender-aware-dispatch. I shall disable it from the default build. David On 18 Jun 2009, at 12:55, Niels Grewe wrote: > Hello all, > > I'm having some problems with blocks using the ObjectiveC2 framework. > I can savely link a library which uses blocks to libObjectiveC2, but > as > soon as I link a tool or application to it, it crashes at startup - no > matter what compiler and feature combination I use (or what the actual > code in the tool is). > The crash occures specifically when the ObjectPlanes category on > NSObject is loaded and the class initialized. It is trying to send an > -objectPlane message to objc_msg_sender which is 0x0 and thus fails. > It > seems to me that the variable is not even set at that point. (at least > if it's correct to assume that it is only set from > objc_msg_lookup_sender()). Any pointers are greatly appreciated. > > > Cheers, > > > Niels > > _______________________________________________ > Etoile-discuss mailing list > Etoile-discuss@... > https://mail.gna.org/listinfo/etoile-discuss _______________________________________________ Etoile-discuss mailing list Etoile-discuss@... https://mail.gna.org/listinfo/etoile-discuss