Re: Debug variables showing when not in scope in Visual D

[Rainer Schuetze via Digitalmars-d-debugger]

On 30/10/2018 16:38, Michelle Long wrote:
> On Monday, 29 October 2018 at 07:39:14 UTC, Rainer Schuetze wrote:
>>
>>
>> On 29/10/2018 08:32, Rainer Schuetze wrote:
>>>
>>>
>>> On 28/10/2018 18:35, Michelle Long wrote:
>>>> Debug variables are showing when not in scope. Is it possible to
>>>> remove them? They also show before they are actually defined in the
>>>> source code.
>>>>
>>>>
>>>>
>>>> int x = 0; < BP here, y and z are shown in the locals.
>>>>
>>>> int y = 3;
>>>> {
>>>>    int z = 4;
>>>> }
>>>>
>>>> // z is when when here.
>>>>
>>>>
>>>> One ends up with a huge list of variables of all the locals when
>>>> they don't even "exist". I'm using the Mago debugger.
>>>
>>> That used to work for dmd, but it seems to have regressed (still works
>>> for try/catch blocks). IIRC LDC does not emit appropriate debug
>>> information.
>>>
>>
>> Sorry, I slightly misremembered. The respective debug information is
>> only emitted by dmd if there are multiple declarations with the same
>> variables in different scopes in the same function. This still works
>> fine.
> 
> Can Visual D detect scopes while debugging? E.g., if one is at some line
> can it determine properly the scope of things? e.g., what symbol is in
> the current scope and what is not?
> 
> Or is this all up to dmd? If dmd is the cause of most of these debugging
> issues, should dmd give as much info as it can so the debugging
> experience can be optimal? It makes no sense for a compiler to make the
> debugging experience more difficult because debugging is naturally part
> of the equation.
> 

I'd consider it a dmd issue and created an enhancement request:
https://issues.dlang.org/show_bug.cgi?id=19349