Hi,

I have a primitive like this. 

sqInt primitiveReturnString(void){
	sqInt* tempPtr = 0x111EB8D4;
	sqInt temp;

	temp = popStack();
	if(isIntegerObject(temp))
		dllMemory[dllResult] = temp;
	else{
		*tempPtr = temp;
		dllMemory[dllResult] = temp; //I'm not sure what to do with this yet
		addGCRoot(tempPtr);		
	}
	pop(1);
	interpReturn = 1;
}

I start up SqueakVM, and execute primitiveReturnString() with a float on top
of the stack. After this primitive, SqueakVM is allow to run on its own. And
then I got an access violation, with call stack look like this. 

	Squeak4.dll!markAndTrace(int oop=0)  Line 11883 + 0x3 bytes	C
 	Squeak4.dll!markPhase()  Line 12221 + 0x9 bytes	C
 	Squeak4.dll!incrementalGC()  Line 5578	C
 	Squeak4.dll!instantiateContextsizeInBytes(int classPointer=275821428, int
sizeInBytes=92)  Line 6218	C
 	Squeak4.dll!allocateOrRecycleContext(int needsLarge=0)  Line 2553 + 0x10
bytes	C
 	Squeak4.dll!interpret(int * sharedMemory=0x0015fabc, int rcvr=0, char *
selector=0x0015fc54, int arg=1, int result=2)  Line 8485 + 0xc bytes	C
 	Squeak4.dll!SqueakInterp2(int * sharedMemory=0x0015fabc, int rcvr=0, char
* selector=0x0015fc54, int arg=1, int result=2)  Line 10 + 0x19 bytes	C
 	MainProgram.exe!main()  Line 49 + 0x19 bytes	C
 	MainProgram.exe!__tmainCRTStartup()  Line 586 + 0x19 bytes	C
 	MainProgram.exe!mainCRTStartup()  Line 403	C
 	kernel32.dll!76b91194() 	
 	[Frames below may be incorrect and/or missing, no symbols loaded for
kernel32.dll]	
 	ntdll.dll!7767b435() 	
 	ntdll.dll!7767b408() 	

or sometimes, it is like this:

 	Squeak4.dll!incCompMakeFwd()  Line 5368 + 0xc bytes	C
 	Squeak4.dll!incCompBody()  Line 5260 + 0x5 bytes	C
 	Squeak4.dll!incrementalGC()  Line 5588	C
 	Squeak4.dll!sufficientSpaceAfterGC(unsigned int minFree=202504)  Line
23654	C
 	Squeak4.dll!primitiveNew()  Line 17781 + 0x9 bytes	C
>	Squeak4.dll!dispatchFunctionPointer(void * aFunctionPointer=0x100403c5) 
Line 4097	C
 	Squeak4.dll!interpret(int * sharedMemory=0x001dfd48, int rcvr=0, char *
selector=0x001dfee0, int arg=1, int result=2)  Line 8458 + 0xb bytes	C
 	Squeak4.dll!SqueakInterp2(int * sharedMemory=0x001dfd48, int rcvr=0, char
* selector=0x001dfee0, int arg=1, int result=2)  Line 10 + 0x19 bytes	C
 	MainProgram.exe!main()  Line 49 + 0x19 bytes	C
 	MainProgram.exe!__tmainCRTStartup()  Line 586 + 0x19 bytes	C
 	MainProgram.exe!mainCRTStartup()  Line 403	C
 	kernel32.dll!76b91194() 	
 	[Frames below may be incorrect and/or missing, no symbols loaded for
kernel32.dll]	
 	ntdll.dll!7767b435() 	
 	ntdll.dll!7767b408() 	


sometimes, it is at remap() as I mention earlier.

At extraRoots[1] I can see 0x111EB8D4, which is still tempPtr. But at
0x111EB8D4, I see some non address value which is for example 0x00000002.

Thanks.

Ang Beepeng
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