From c92267a86393df927feccd3d03894a6cfe92dea8 Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Tue, 3 Mar 2020 13:30:17 +0100
Subject: [PATCH] Add explanation for E0379

---
 src/librustc_error_codes/error_codes/E0379.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/librustc_error_codes/error_codes/E0379.md b/src/librustc_error_codes/error_codes/E0379.md
index 3503da6ac2f..930204847ec 100644
--- a/src/librustc_error_codes/error_codes/E0379.md
+++ b/src/librustc_error_codes/error_codes/E0379.md
@@ -1,3 +1,15 @@
+A trait method was declared const.
+
+Erroneous code example:
+
+```compile_fail,E0379
+#![feature(const_fn)]
+
+trait Foo {
+    const fn bar() -> u32; // error!
+}
+```
+
 Trait methods cannot be declared `const` by design. For more information, see
 [RFC 911].