Silent error when using hashmap

[ketmar via Digitalmars-d]

FatalCatharsis wrote:

> On Thursday, 27 July 2017 at 00:48:48 UTC, ketmar wrote:
>> 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.
>>
>> 'cause you never printed anything.
>
> the writeln("start"); and writeln("end"); in main. This is what I meant 
> by printing. These do not appear in the output. The programs starts and 
> immediately ends without printing "start" and "end". I did not put an 
> output in the exception handler of the WndProc because writeln can throw 
> and the function is marked nothrow. All I as trying to do there was get 
> it to recover.

'cause, as i said, RangeError is not an exception. i thought that you 
already know it, as this is "general", not "learning" NG.