nogc v0.5.0 - DIP1008 works!

[Atila Neves]

On Friday, 24 May 2019 at 13:30:05 UTC, ag0aep6g wrote:
> On Friday, 24 May 2019 at 13:13:12 UTC, Atila Neves wrote:
>> Thanks for this. I think the only violation is calling 
>> `stringz` on `Z`, and that was due to a poorly designed DbI 
>> check on being able to call `stringz`. Allocating generally 
>> isn't @system, and freeing is ok to trust since vector is 
>> taking care of it for us. I've pushed a fix.
>
> I think you're missing the point. When your function is marked 
> as @safe or @trusted, then any execution of a user-provided 
> @system function is a safety violation.
>
> My `puts`s might not do any harm, but they could just as well 
> be buffer overflows.

Could you please give an example of how @system allocator code 
could do that?