Re: Cynthiune on FreeBSD

[Riccardo Mottola]

Hi,

David Chisnall wrote:
> Can you try to narrow it down a bit?  Does it work with libobjc2 and gcc?  Does 
> it work with libobjc2, clang, and -O0?  Does it work with most files compiled 
> at -O2 and one at -O0?
I compiled Cynthiune with debug=yes. Now I get a slightly more 
meaningful stacktrace.

[Switching to Thread 2ac04300 (LWP 100088/Cynthiune)]
0x28ab46be in init_protocols (protocols=Variable "protocols" is not 
available.
) at protocol.c:62
62                      isEmpty &= (p2->properties->count == 0);


(gdb) bt
#0  0x28ab46be in init_protocols (protocols=Variable "protocols" is not 
available.
) at protocol.c:62
#1  0x28ab45b5 in init_protocols (protocols=Variable "protocols" is not 
available.
) at protocol.c:186
#2  0x28ab4231 in objc_init_protocols (protocols=Error accessing memory 
address 0x1: Bad address.
) at protocol.c:196
#3  0x28aae323 in objc_try_load_category (cat=Variable "cat" is not 
available.
) at category_loader.c:38
#4  0x28ab3d51 in __objc_exec_class (module=Variable "module" is not 
available.
) at loader.c:89
#5  0x08063a11 in .objc_load_function ()
#6  0x08086545 in __do_global_ctors_aux ()
#7  0x0805b951 in _init ()
#8  0x00000000 in ?? ()
#9  0x00000000 in ?? ()
#10 0xbfbfe498 in ?? ()
#11 0x0805bbb7 in _start1 ()
#12 0x0805bb38 in _start ()
#13 0x00000000 in ?? ()

I wonder where this code is? protocol.c I suppose libobjc2.

IU thus recompiled also libobjc2 with debug=yes and get the following:
(gdb) bt
#0  0x28abb1c5 in isEmptyProtocol (aProto=0x8098cf0) at protocol.c:62
#1  0x28abb06e in unique_protocol (aProto=0x8098cf0) at protocol.c:118
#2  0x28ab90ac in init_protocols (protocols=0x8098d10) at protocol.c:189
#3  0x28ab909a in init_protocols (protocols=0x8099010) at protocol.c:186
#4  0x28ab8e3a in objc_init_protocols (protocols=0x8099010) at 
protocol.c:196
#5  0x28aaf814 in load_category (cat=0x8099040, class=0x28ad0820)
    at category_loader.c:38
#6  0x28aaf4b2 in try_load_category (cat=0x8099040) at category_loader.c:50
#7  0x28aaf41a in objc_try_load_category (cat=0x8099040)
    at category_loader.c:63
#8  0x28ab88ea in __objc_exec_class (module=0x8099058) at loader.c:89
#9  0x08063a11 in .objc_load_function ()
#10 0x08086545 in __do_global_ctors_aux ()
#11 0x0805b951 in _init ()
#12 0x00000000 in ?? ()
#13 0x00000000 in ?? ()
#14 0xbfbfe498 in ?? ()
#15 0x0805bbb7 in _start1 ()
#16 0x0805bb38 in _start ()
#17 0x00000000 in ?? ()


Does this help?

Riccardo