On Sunday, 5 July 2015 at 18:57:46 UTC, sigod wrote:
Why does function return incorrect data? Using `.dup` in return expression or using `ubyte[20]` as return type fixes problem, but why?
Because sha1Of() returns ubyte[20], this is a stack-allocated array, a value type. If you put correct return type there, it will be returned by value and everything's fine. If your return type is ubyte[] (a reference type), a slice of stack-allocated array is returned which creates a reference to stack data that doesn't exist anymore.
