D not considered memory safe

[Steven Schveighoffer]

On Thursday, 4 July 2024 at 02:00:52 UTC, Richard (Rikki) Andrew 
Cattermole wrote:
> On 04/07/2024 1:52 PM, Steven Schveighoffer wrote:
>> |ref int bar(ref int x) => x; ref int foo() { int i = 0; 
>> return bar(i); } |
>> 
>> Compiles, even with dip1000.
>
> ``-preview=dip1000``
>
> ```d
> @safe:
>
> ref int bar(ref int x) => x;
>
> ref int foo()
> {
>     int i = 0;
>     return bar(i);
> }
>
> void main() {
>     int* v = &foo();
> }
> ```
>
> ```
> <source>(3): Error: returning `x` escapes a reference to 
> parameter `x`
> <source>(3):        perhaps annotate the parameter with `return`
> ```
>
> And when annotated:
>
> ```
> <source>(8): Error: returning `bar(i)` escapes a reference to 
> local variable `i`
> ```

I'm aware. Not writing `@safe:` at the top was intentional.

-Steve