Stack space and declarations

[Andreas Pfeil]

Hi,

which architecture are you talking about? On PowerPC, if none of the 
variables are marked volatile, then probably no stack space will be 
allocated for the variables. This depends on the ABI of the processor, 
I'd believe.

Cheers,
Andreas

Václav Haisman wrote:
> Hi,
> first some C code:
> 
> void foo (int x)
> {
>   int y = 0;
>   if (x) {
>     int z = 0;
>     // some more code
>   }
>   else {
>     int w = 0;
>     // some more code
>   }
> }
> 
> Now, how much stack space is getting allocated in the function? Is it
> (assuming 32bit architecture) 2*4=8 bytes (y + (z or w)) or is it 3*4=12
> (each variable gets its own slot)?
> 
> 
> Vaclav Haisman