285 – Struct method null pointer assert has line number of "0"

struct S
{
	void fork()
	{
	}
}
void main()
{
	S* s = null;
	s.fork();
}
This causes an AssertError with the correct module name, but with a line number of 0, which is really, really unhelpful.
I didn't know DMD even inserted this null check, I think it's pretty cool :) Would be nice if it included the message "struct 'this' pointer is null" or "struct method called through null pointer" or something along those lines.

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d-bugmail@puremagic.com schrieb am 2006年08月12日:
> http://d.puremagic.com/issues/show_bug.cgi?id=285 
> struct S
> {
> void fork()
> {
>
> }
> }
>
> void main()
> {
> S* s = null;
> s.fork();
> }
>
> This causes an AssertError with the correct module name, but with a line number
> of 0, which is really, really unhelpful.
Added to DStress as
http://dstress.kuehne.cn/norun/s/struct_26_A.d
Thomas
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It's been suggested before that we should have some kind of error that unambiguously indicates an attempt to dereference a null pointer. This was mainly in reference to class object references, but I suppose it would apply to structs just as well.

Fixed in DMC 0.167.