[Issue 13902] Compiler allows escaping the address of part of a local

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13902

--- Comment #1 from Andrei Alexandrescu <andrei at erdani.com> ---
One more simple case, equivalent in fact because statically-sized arrays behave
like structs:

ref int lun() {
    int a[42];
    return a[5];
}

This should also be disallowed directly.

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