From 85431e9adf6f4c78bd10db980f8600612e60a28f Mon Sep 17 00:00:00 2001
From: Sergei Pepyakin <sergei@parity.io>
Date: Sat, 28 Sep 2019 13:14:28 +0200
Subject: [PATCH] Add a comment on the features. (#3714)

---
 substrate/core/sr-io/Cargo.toml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/substrate/core/sr-io/Cargo.toml b/substrate/core/sr-io/Cargo.toml
index a529c1e757b..08a526f4e6a 100644
--- a/substrate/core/sr-io/Cargo.toml
+++ b/substrate/core/sr-io/Cargo.toml
@@ -37,5 +37,10 @@ std = [
 ]
 nightly = []
 strict = []
+
+# These two features are used for `no_std` builds for the environments which already provides
+# `#[panic_handler]` and `#[alloc_error_handler]`.
+#
+# For the regular wasm runtime builds those are not used.
 no_panic_handler = []
 no_oom = []
-- 
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