On Oct 3, 2007, at 11:15 AM, Robert Withers wrote:

> This is reproducible and not limited to the vm I specified.

Well
EXPORT(sqInt) primitiveSocketConnectToPort(void) {
	sqInt addr;
	sqInt okToConnect;
	SocketPtr s;
	sqInt socket;
	char *address;
	sqInt port;

	socket = interpreterProxy->stackValue(2);
	interpreterProxy->success(interpreterProxy->isBytes(interpreterProxy- 
 >stackValue(1)));
	address = ((char *) (interpreterProxy->firstIndexableField 
(interpreterProxy->stackValue(1))));


dies with memory read exception in interpreterProxy- 
 >firstIndexableField()

void * firstIndexableField(sqInt oop) {
register struct foo * foo = &fum;
     sqInt fmt;
     sqInt totalLength;
     sqInt hdr;
     sqInt fixedFields;
     sqInt sz;
     sqInt class;
     sqInt classFormat;
     sqInt ccIndex;

	hdr = longAt(oop);

because oops, via interpreterProxy->stackValue(1)  has the value of  
(3)   so it's a number 3, not an oops location (aka 32bit address)

longat:(3)  is of course invalid


I'd suggest someone look at
tryNamedPrimitiveIn: aCompiledMethod for: aReceiver withArgs: arguments

to see why it's passing bad data.

(gdb) call printAllStacks(0)
Process
389589848 ContextPart>tryNamedPrimitiveIn:for:withArgs:
389589756 ContextPart>doPrimitive:method:receiver:args:
389589664 ContextPart>tryPrimitiveFor:receiver:args:
389589204 ContextPart>send:to:with:super:
389589096 ContextPart>send:super:numArgs:
389589004 InstructionStream>interpretExtension:in:for:
389588912 InstructionStream>interpretNextInstructionFor:
389588820 ContextPart>step
389538388 ContextPart>runSimulated:contextAtEachStep:
389538296 MessageTally class>tallySendsTo:inBlock:showTree:
389538112 MessageTally class>tallySends:
389537908 UndefinedObject>DoIt
389532772 Compiler>evaluate:in:to:notifying:ifFail:logged:
389532864 [] in ParagraphEditor>evaluateSelection
389532588 BlockContext>on:do:
389532496 ParagraphEditor>evaluateSelection
389532404 ParagraphEditor>doIt
389532680 [] in ParagraphEditor>doIt:
389532312 Controller>terminateAndInitializeAround:
389532220 ParagraphEditor>doIt:
389531972 ParagraphEditor>dispatchOnCharacter:with:
389531880 TextMorphEditor>dispatchOnCharacter:with:
389531788 ParagraphEditor>readKeyboard
389531696 TextMorphEditor>readKeyboard
389531208 [] in TextMorph>keyStroke:
389531116 TextMorph>handleInteraction:fromEvent:
389531024 TextMorphForEditView>handleInteraction:fromEvent:
389530880 TextMorph>keyStroke:
389530788 TextMorphForEditView>keyStroke:
389530696 TextMorph>handleKeystroke:
389530328 KeyboardEvent>sentTo:
389530236 Morph>handleEvent:
389530144 Morph>handleFocusEvent:
389530420 [] in HandMorph>sendFocusEvent:to:clear:
389530512 [] in PasteUpMorph>becomeActiveDuring:
389530052 BlockContext>on:do:
389529960 PasteUpMorph>becomeActiveDuring:
389529736 HandMorph>sendFocusEvent:to:clear:
389529644 HandMorph>sendEvent:focus:clear:
389529552 HandMorph>sendKeyboardEvent:
389529460 HandMorph>handleEvent:
389529240 HandMorph>processEvents
389529332 [] in WorldState>doOneCycleNowFor:
389529148 SequenceableCollection>do:
389529056 WorldState>handsDo:
389528964 WorldState>doOneCycleNowFor:
389528872 WorldState>doOneCycleFor:
389528780 PasteUpMorph>doOneCycle
386845716 [] in Project class>spawnNewProcess
386845900 [] in BlockContext>newProcess


--
======================================================================== 
===
John M. McIntosh <johnmci at smalltalkconsulting.com>
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
======================================================================== 
===