Exceptions in @nogc code

[Guillaume Piolat via Digitalmars-d]

On Sunday, 2 April 2017 at 17:22:11 UTC, Andrei Alexandrescu 
wrote:
> On 4/1/17 2:56 PM, Guillaume Piolat wrote:
>> The other @nogc blocker is .destroy
>
> How do you mean that? -- Andrei

https://github.com/dlang/druntime/blob/master/src/object.d#L2732

destroy() infers it's "@nogc"-ness from rt_finalize which is not 
nothrow and not @nogc:
https://github.com/dlang/druntime/blob/5a94816c8f1d5c225e560151cebe0a09949896a5/src/object.d#L16

I guess the rationale is that rt_finalize call Object.~this() and 
that may GC allocate, and throw.

In turn this cause every wrapper using emplace+destroy to not be 
@nogc.