> I don't think you need a warning in this particular case, perhaps a
> better way would be for the compiler to enforce a rule that forbids
> access of function pointers of inner functions that referencing local
> variables of its parent function.
Yes, this is better. For now, when this happend, there's only a
segfault and it's diffcult to dig out.
>
> For example, both:
>
> void *foo(int x)
> {
> int a;
> void foo2(int i)
> {
> // I want warning for the below code.
> if (i == a){}
> x += i;
> a += i;
> }
> foo2(a);
>
> return foo2;
> }
>
> and:
>
> void *bar;
>
> void foo(int x)
> {
> int a;
> void foo2(int i)
> {
> // I want warning for the below code.
> if (i == a){}
> x += i;
> a += i;
> }
> foo2(a);
>
> bar = foo2;
> }
>
>
> should return an error.
