'with' bug?

[bearophile]

Adam D. Ruppe:

> D normally lets locals shadow globals silently - if you had
>
> int g;
>
> void main() {
>    int g;
> }
>
> that's ok normally so it isn't specific to with. This is a good 
> thing because it means adding a variable elsewhere won't 
> annoyingly break your functions.
>
> You could argue that doing it on structs is a little harder to 
> keep track of than regular locals, but, meh.

I try to minimize (possibly to zero) the number of global 
variables/constants, but I have had some troubles caused by 
silent shadowing of global names by local names in functions.
Having global variables with the same name of local variables is 
sometimes a source for troubles, so I try to keep their name 
distinct. But I'd like D to spot such duplications (shadowing of 
a global) for me.

Bye,
bearophile