Apple

// to avoid linking issues

#ifndef kASSubroutineEvent

#define kASSubroutineEvent (FourCharCode)'psbr'

#endif

#ifndef kASAppleScriptSuite

#define kASAppleScriptSuite (FourCharCode)'ascr'

#endif

#ifndef keyASSubroutineName

#define keyASSubroutineName (FourCharCode)'snam'

#endif

…

    NSAppleEventDescriptor *currentProcess  = [NSAppleEventDescriptor currentProcessDescriptor] ;

    NSAppleEventDescriptor *executeSubroutineEvent = [NSAppleEventDescriptor appleEventWithEventClass:kASAppleScriptSuite eventID:kASSubroutineEvent targetDescriptor: currentProcess returnID:kAutoGenerateReturnID transactionID:kAnyTransactionID];

    NSAppleEventDescriptor *handlerName = [NSAppleEventDescriptor descriptorWithString:handler.lowercaseString];

    [executeSubroutineEvent setParamDescriptor:handlerName forKeyword:keyASSubroutineName];

    NSAppleEventDescriptor* list = [NSAppleEventDescriptor listDescriptor];

    int i=0; va_list ppp; va_start(ppp, firstParam);

    NSAppleEventDescriptor * aParam = firstParam;

    while (aParam) {

        [list insertDescriptor:aParam atIndex:++i];

        aParam = va_arg(ppp, NSAppleEventDescriptor *);

}

    [executeSubroutineEvent setParamDescriptor:list forKeyword:keyDirectObject];

    errorDict = nil;

    NSAppleEventDescriptor *eventResult = [compiledAppleScript executeAppleEvent:executeSubroutineEvent error:&errorDict];

    if ((!eventResult.descriptorType) || (errorDict!=nil)) {

it crashed on the 'eventResult' line: EXC_BAD_INSTRUCTION

#0	0x00007fff90cca28e in -[NSApplication _crashOnException:] ()

#1	0x00007fff90d9034e in __37+[NSDisplayCycle currentDisplayCycle]_block_invoke.31 ()

#2	0x00007fff92cf3f67 in __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ ()

#3	0x00007fff92cf3ed7 in __CFRunLoopDoObservers ()

#4	0x00007fff92cd4b79 in __CFRunLoopRun ()

#5	0x00007fff92cd45b4 in CFRunLoopRunSpecific ()

#6	0x00007fff92275f6c in RunCurrentEventLoopInMode ()

#7	0x00007fff923c2017 in GetNextEventMatchingMask ()

#8	0x00007fff923c1f15 in WNEInternal ()

#9	0x0000000104e83f9a in AEDefaultActiveProc(void*) ()

#10	0x0000000104e88955 in InternalComponentActive(unsigned int) ()

#11	0x0000000104ebd51b in UASRemoteSend(unsigned char, unsigned char, unsigned char, unsigned char, unsigned char, unsigned char*) ()

#12	0x0000000104e93c6c in UASActor_Send(unsigned char, unsigned char, unsigned char) ()

#13	0x0000000104e9f521 in UASExecute1() ()

#14	0x0000000104e70d7e in ASExecuteEvent(AEDesc const*, unsigned int, int, unsigned int*) ()

#15	0x0000000104e692dc in AppleScriptComponent ()

#16	0x0000000104e839e5 in AGenericCall::Delegate(ComponentInstanceRecord*) ()

#17	0x0000000104e839ab in AGenericManager::HandleOSACall(ComponentParameters*) ()

#18	0x0000000104e82fac in GenericComponent ()

#19	0x00007fff925fca5f in OSAExecuteEvent ()

#20	0x00007fff947cd913 in -[NSAppleScript(NSPrivate) _executeAppleEvent:withMode:error:] ()