Walter likes the idea that we first introduce the restriction in @safe code alone. I think we must eventually introduce it for all code, and my understanding is that Walter is also convinced of that.

Andrei
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I think the language should allow taking addresses of references in unsafe context. One valid and fairly frequent case is passing the address to C:

extern(C) external_foo(S* s);

void foo(ref S s)

{

external_foo(&s);

}