Null references redux

[Jeremie Pelletier]

Walter Bright wrote:
> Jeremie Pelletier wrote:
>> This may be a good time to ask about how these variables which can be 
>> declared anywhere in the function scope are implemented.
>>
>> void bar(bool foo) {
>>     if(foo) {
>>         int a = 1;
>>         ...
>>     }
>>     else {
>>         int a = 2;
>>         ...
>>     }
>>
>> }
>>
>> is the stack frame using two ints, or is the compiler seeing only one? 
>> I never bothered to check it out and just declared 'int a = void;' at 
>> the beginning of the routine to keep the stack frames as small as 
>> possible.
> 
> They are completely independent variables. One may get assigned to a 
> register, and not the other.

Ok, that's what I thought, so the good old C way of declaring variables 
at the top is not a bad thing yet :)