More fun with toStringz and the GC

[Steven Schveighoffer]

On 8/5/22 8:51 PM, Don Allen wrote:

> And this, from Section 32.2 of the Language Reference Manual:
> ````
> If pointers to D garbage collector allocated memory are passed to C 
> functions, it's critical to ensure that the memory will not be collected 
> by the garbage collector before the C function is done with it. This is 
> accomplished by:
> 
>      Making a copy of the data using core.stdc.stdlib.malloc() and 
> passing the copy instead.
>      -->Leaving a pointer to it on the stack (as a parameter or 
> automatic variable), as the garbage collector will scan the stack.<--
>      Leaving a pointer to it in the static data segment, as the garbage 
> collector will scan the static data segment.
>      Registering the pointer with the garbage collector with the 
> std.gc.addRoot() or std.gc.addRange() calls.
> ````
> I did what the documentation says and it does not work.

I know, I felt exactly the same way in my post on it:

https://forum.dlang.org/post/sial38$7v0$1@digitalmars.com

I even issued a PR to remove the problematic recommendation:

https://github.com/dlang/dlang.org/pull/3102

But there was pushback to the point where it wasn't worth it. So I 
closed it.

-Steve