Visual D expanding invalid arrays crashes visual studio

[Rainer Schuetze]

On 14/06/2019 07:34, Amex wrote:
> On Wednesday, 12 June 2019 at 07:31:15 UTC, Rainer Schuetze wrote:
>>
>>
>> On 10/06/2019 10:54, Amex wrote:
>>> Usually one would get some warning box but now it just crashes. May
>>> be a new bug for VS2019.
>>>
>>> These arrays may be "valid" in some sense but have very large lengths.
>>
>> I've hit that, too. Probably needs a limit on how many elements get
>> expanded. C++ does that, too, at 1_000_000.
> 
> I think it should be much smaller, one really doesn't want to see more
> than 100 elements or so.. hell, even 50 might be too much(maybe have it
> configurable).

Implemented in
https://github.com/dlang/visuald/releases/tag/v0.50.0-beta3 with a
default limit of 1000. The last element is a slice of the remainder.

> 
> but I have an alternative:
> 
> How about creating some visualizers?
> 
> If the type is a struct or class just "pretty print" the members?
> (probably just take the first level to avoid too much work)
> 
> If it is a array also have it pretty print... sorta like the memory
> window if the type is a primitive... if it is a struct or class array
> can then print using one but print a few of the elements.
> 
> I routinely use the memory window to investigate arrays and even
> sometimes structs and classes...
> 
> Would be much faster if I could just see their contents with a click on
> the magnifier like I can with strings.
> 

I don't think it adds much over the quick watch, but loses the
possibility of drilling into further expansions.