Variable-length stack allocated arrays

[Leandro Lucarella]

bearophile, el 12 de enero a las 04:18 me escribiste:
> Walter Bright:
> > One of the problems is they can easily lead to stack exhaustion. Stack 
> > sizes for a thread must all be preallocated.
> 
> Yes, that's of course a problem. It's meaningful to allocate arrays on the stack only if they are small. You can exhaust the/a stack even with normal fixed-sized arrays too:
> 
> int foo(int n) {
>   int[100] a;
>   ...
>   y = foo(k);
>   ...
> }

Or with structs:

struct S {
	int[100000] a;
}

void foo() {
	S s;
}

See this post:
http://www.yosefk.com/blog/the-c-sucks-series-petrifying-functions.html

For a nice real story about this problem ;)

-- 
Leandro Lucarella (AKA luca)                     http://llucax.com.ar/
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