On 03/01/2018 04:34 PM, David Nadlinger wrote: > On Thursday, 1 March 2018 at 14:54:41 UTC, Shachar Shemesh wrote: >> I.e. - is it well defined to copy between overlapping slices? > > No: https://dlang.org/spec/arrays.html#overlapping-copying Does that mean it has undefined behavior and should not be allowed in @safe code?