[Issue 12941] Everything should be @unsafe by default, and explicitly vetted (and documented) as @safe

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12941

--- Comment #6 from hsteoh at quickfur.ath.cx ---
Also, slicing of static arrays should be considered @system, because unless we
implement scope properly, they will break @safe-ty.

class C {
    int[] data;
    this(int[] _data) {
        data = _data;
    }
}
void func() {
    int[4] arr = [1,2,3,4];
    return new C(arr[]); // oops
}

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