From c06982b7ac611b78e1f1c39b99d624c3d688f0f1 Mon Sep 17 00:00:00 2001
From: Szymon Walter <walter.szymon.98@gmail.com>
Date: Mon, 19 Mar 2018 13:28:18 +0100
Subject: [PATCH] add `Infallible`, for errors which never occur

---
 src/error.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/error.rs b/src/error.rs
index d6aee4f..353d8f2 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -5,3 +5,11 @@ pub enum Error {
     OutOfBounds(usize),
     BadBlockGroupCount(u32, u32),
 }
+
+impl From<Infallible> for Error {
+    fn from(_: Infallible) -> Error {
+        unreachable!()
+    }
+}
+
+pub enum Infallible {}