Drawbacks of exceptions being globally allocated

[Tejas]

On Sunday, 15 August 2021 at 20:23:03 UTC, Paul Backus wrote:
> On Sunday, 15 August 2021 at 18:47:27 UTC, Tejas wrote:
>> Do you see anything wrong with the following 
>> `emplace`-allocated, RAII following exceptions:
>>
>> [...]
>>
>> Is this good enough for general use now? Any other drawbacks?
>
> It only works if you're throwing and catching in the same 
> function. Otherwise you are essentially returning a pointer to 
> an expired stack frame, which is UB.

  Agh >_<

if I remove the `scope`and replace it with `auto`?
No longer having anything to do with the stack or RAII, just 
using malloc + emplace instead of GC?

Yeah it might leak memory unless the catch block explicitly frees 
the exception object, but other than that?