[LLVMdev] MCJIT Obj-c [NSApplication sharedApplication] unrecognized selector

[graememacdonald at fastmail.fm]

Hi, I'm trying to use MCJIT to run some c++ code that has Objective-C++
calls to standard OSX frameworks in it.  I'm fairly new to this so
please forgive any naive assumptions I may be making.  I don't have a
deep understanding of it, but I've been hacking at it for the past week
and have had some success running basic jit'd C++ code (excluding
objective-c).  I'm using llvm 3.6 from about a week or so ago.

When I first tried to run some code that depends on the Cocoa framework
I encountered a "Program used external function...could not resolve"
error.  In order to resolve that I loaded the Cocoa framework using
DynamicLibrary::LoadLibraryPermanently.  That got me passed that and got
the code to execute to the point of encountering [NSApplication
sharedApplication] (which I believe is the first occurrence of an actual
selector call).   From that I got the error listed below.

I found an old email (2012) to the list where someone was using the OLD
JIT and encountered an issue like this but I'm not sure how it might
apply to MCJIT.  I'm wondering then, is calling Objective-C frameworks
from MCJIT'd code supported/doable?  If so, is
DynamicLibrary::LoadLibraryPermantly a proper way to load the framework?
 Any thoughts/tips are appreciated and I can share my setup code if
someone would like to take a look at it.  Thanks!

THE ERROR:

2014-12-23 17:02:54.215 exe2.o[20538:507] *** NSForwarding: warning:
selector (0x10c5f5561) for message 'sharedApplication' does not match
selector known to Objective C runtime (0x7fff94565368)-- abort
2014-12-23 17:02:54.215 exe2.o[20538:507] +[NSApplication
sharedApplication]: unrecognized selector sent to class 0x7fff7a19f078
2014-12-23 17:02:54.216 exe2.o[20538:507] *** Terminating app due to
uncaught exception 'NSInvalidArgumentException', reason:
'+[NSApplication sharedApplication]: unrecognized selector sent to class
0x7fff7a19f078'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff89a9d25c
	__exceptionPreprocess + 172
	1   libobjc.A.dylib                     0x00007fff8b000e75
	objc_exception_throw + 43
	2   CoreFoundation                      0x00007fff89aa002d
	+[NSObject(NSObject) doesNotRecognizeSelector:] + 205
	3   CoreFoundation                      0x00007fff899fb272
	___forwarding___ + 1010
	4   CoreFoundation                      0x00007fff899fadf8
	_CF_forwarding_prep_0 + 120
	5   ???                                 0x000000010ec9bc3b 0x0 +
	4543069243
	6   ???                                 0x000000010ec9bb64 0x0 +
	4543069028
	7   ???                                 0x000000010b632076 0x0 +
	4486013046
	8   exe2.o                              0x0000000109c096c1
	_ZN4llvm5MCJIT11runFunctionEPNS_8FunctionERKNSt3__16vectorINS_12GenericValueENS3_9allocatorIS5_EEEE
	+ 257
	9   exe2.o                              0x0000000109ad44b3
	_ZN4llvm15ExecutionEngine17runFunctionAsMainEPNS_8FunctionERKNSt3__16vectorINS3_12basic_stringIcNS3_11char_traitsIcEENS3_9allocatorIcEEEENS8_ISA_EEEEPKPKc
	+ 1523
	10  exe2.o                              0x000000010ac92bcc main
	+ 204
	11  libdyld.dylib                       0x00007fff8cdf15fd start
	+ 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Abort trap: 6




-- 
  
  graememacdonald at fastmail.fm