Hi, I have the following code, that makes some problems.

This works:
	char[] str1 = "abc";
	k_println(str1);

And this part fails:
	Object obj1;

	char[] str1;
	str1 = obj1.toString();
	k_println(str1);

What's happening at the line with the assignment? The code compiles without any unresoleved reference errors but bombs. This is the ASM output, of the second code snippet.

		push	EBP
		mov	EBP,ESP
		xor	EAX,EAX
		mov	ECX,[EAX]
		call	dword ptr 8[ECX]
		push	EDX
		push	EAX
		call	near ptr _D6kernel7console7printlnFAaZv
		pop	EBP
		ret

What is this "call dword ptr 8[ECX]" thing? Is this a call thru the vtable of the object? It seems, that my stack pointer is wrong. But I don't do anything with it. Maybe that's the problem...

-- 
Robert M. Münch
Management & IT Freelancer
http://www.robertmuench.de

your object is a null reference.. or have you obj = new Obj; somewhere? "Robert M. Münch" <robert.muench@robertmuench.de> schrieb im Newsbeitrag news:opr3lzklwium5vd8@news.digitalmars.com...
> Hi, I have the following code, that makes some problems.
>
> This works:
> char[] str1 = "abc";
> k_println(str1);
>
> And this part fails:
> Object obj1;
>
> char[] str1;
> str1 = obj1.toString();
> k_println(str1);
>
> What's happening at the line with the assignment? The code compiles without any unresoleved reference errors but bombs. This is the ASM output, of the second code snippet.
>
> push EBP
> mov EBP,ESP
> xor EAX,EAX
> mov ECX,[EAX]
> call dword ptr 8[ECX]
> push EDX
> push EAX
> call near ptr _D6kernel7console7printlnFAaZv
> pop EBP
> ret
>
> What is this "call dword ptr 8[ECX]" thing? Is this a call thru the vtable of the object? It seems, that my stack pointer is wrong. But I don't do anything with it. Maybe that's the problem...
>
> -- 
> Robert M. Münch
> Management & IT Freelancer
> http://www.robertmuench.de

On Thu, 19 Feb 2004 15:32:38 +0100, davepermen <davepermen@hotmail.com> wrote:

> your object is a null reference.. or have you obj = new Obj; somewhere?

Hi, no, because it's a (local) stack object. Or is this not supported? IIRC this is totaly legal. Robert

-- 
Robert M. Münch
Management & IT Freelancer
http://www.robertmuench.de

"Robert M. Münch" <robert.muench@robertmuench.de> wrote in message news:opr3n2w8yoheztw6@news.digitalmars.com...
> On Thu, 19 Feb 2004 15:32:38 +0100, davepermen <davepermen@hotmail.com> wrote:
>
> > your object is a null reference.. or have you obj = new Obj; somewhere?
>
> Hi, no, because it's a (local) stack object. Or is this not supported? IIRC this is totaly legal. Robert

Class objects are not on the stack; you'll need to new them.