From e167a73564f513e68d6c35dfa940bc7baefb9554 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Linus=20F=C3=A4rnstrand?= <faern@faern.net>
Date: Mon, 30 Jul 2018 16:57:55 +0200
Subject: [PATCH] Describe the align feature in the readme

---
 README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README.md b/README.md
index 5c259232..a19a56ee 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,16 @@ this via:
 libc = { version = "0.2", default-features = false }
 ```
 
+By default libc uses private fields in structs in order to enforce a certain
+memory alignment on them. These structs can be hard to instantiate outside of
+libc. To make libc use `#[repr(align(x))]`, instead of the private fields,
+activate the *align* feature. This requires Rust 1.25 or newer:
+
+```toml
+[dependencies]
+libc = { version = "0.2", features = ["align"] }
+```
+
 ## What is libc?
 
 The primary purpose of this crate is to provide all of the definitions necessary