Re: c++ global object space

[Daniel Lohmann <daniel dot lohmann at informatik dot uni-erlangen dot de>]

Kevin Yohe schrieb:
> Hello,
>
> In c++, suppose I define a template class
>
> typedef unsigned long tWord32;
> 	...
> template<class T, tWord32 size>
>
> class cBuffer
> {
> public:
>
> 	T	mBuff[size];
> };
>
> then declare a global,
>
> cBuffer<tWord32, 512> longBuff;
>
> Is &(longBuff.mBuff) known at link-time?

Yes.

> [...] 
> Now suppose I did this,
>
> template<class T, tWord32 size>
>
> class cBuffer
> {
> public:
> 	T *   Address()
> 			{ return &mBuff; };
>
> private:
> 	T	mBuff[size];
> };
>
> cBuffer<tWord32, 512> longBuff;
>
> tWord32 * ptr = longBuff.Address();
>
> Is the result of the inline method invocation expression
> "longBuff.Address()" a push statement that gets executed during global
> object initialization or is it treated as a field access expression and
> resolved at compile-time?

I am pretty sure that it is executed at run-time during global object 
initialization. However, to be sure I would just write a small test 
program, compile it and check the resulting assembly code with objdump.

Daniel