[OT] - C++ exceptions are becoming more and more problematic

[meta]

On Wednesday, 23 February 2022 at 17:14:53 UTC, H. S. Teoh wrote:
> On Thu, Feb 24, 2022 at 06:02:31AM +1300, rikki cattermole via 
> Digitalmars-d wrote:
>> On 24/02/2022 5:59 AM, IGotD- wrote:
>> > The Herb Sutter exception/return value proposal would live 
>> > alongside with the old exceptions. I suspect that D would do 
>> > the same thing.
>> 
>> Yes, with the possibility of having the compiler swap the 
>> runtime unwinding stuff for value based where possible.
>> 
>> Apart from some situations where you need to be able to store 
>> a class based exception, I don't see why it couldn't work like 
>> this.
>
> If we had by-value exceptions, we can implement the current 
> by-reference exceptions simply by treating the reference to the 
> allocated exception as the value to be thrown. I.e.,
>
> 	throw new Exception(...);
>
> is equivalent to:
>
> 	struct S {
> 		Exception e;
> 	}
> 	Exception e = new Exception(...);
> 	throwByValue S(e);
>
> So if we implemented by-value exceptions, we don't have to 
> break any existing code, just treat `throw new SomeException` 
> as syntactic sugar for some analogue of the above.
>
>
> T

I am sorry but this feels like "hiding my problems under the 
carpet" type of solution.. it is not very elegant..