Silent error when using hashmap

[ketmar via Digitalmars-d]

FatalCatharsis wrote:

> On Thursday, 27 July 2017 at 00:34:28 UTC, ketmar wrote:
>> wrap the whole event handler function in `try/catch` block, and print it 
>> there. after all, this is what Dmain does, and so can you. having *full* 
>> stack trace has no sense there anyway, as you know for sure that event 
>> handler is called by windows, not by you (and usually from your event 
>> loop anyway, so detailed stack trace has little useful info).
>
> I tried that like so:
>
> https://gist.github.com/FatalCatharsis/39c5f35ae78ecd5399eebe0fb2491004
>
> I put exception blocks both around main and around the invocation of the 
> hash lookup and still get no printouts anywhere, including at the 
> beginning and end of main.

besides, RangeError is not Exception.