From 4e07fea4be17fb9bcf01f85f69b36533250a3c37 Mon Sep 17 00:00:00 2001
From: Niklas Adolfsson <niklasadolfsson1@gmail.com>
Date: Thu, 14 Mar 2019 16:27:14 +0100
Subject: [PATCH] fix(grumble): use cfg_attr to define rustc feature

---
 ethcore/src/engines/authority_round/mod.rs | 2 +-
 ethcore/src/lib.rs                         | 5 ++++-
 ethcore/src/verification/verification.rs   | 2 +-
 whisper/src/lib.rs                         | 6 +++++-
 whisper/src/message.rs                     | 2 +-
 5 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/ethcore/src/engines/authority_round/mod.rs b/ethcore/src/engines/authority_round/mod.rs
index babbf8102ad..b973103e1e7 100644
--- a/ethcore/src/engines/authority_round/mod.rs
+++ b/ethcore/src/engines/authority_round/mod.rs
@@ -47,7 +47,7 @@ use types::header::{Header, ExtendedHeader};
 use types::ancestry_action::AncestryAction;
 use unexpected::{Mismatch, OutOfBounds};
 
-#[cfg(not(feature = "time_checked_add"))]
+#[cfg(not(time_checked_add))]
 use time_utils::CheckedSystemTime;
 
 mod finality;
diff --git a/ethcore/src/lib.rs b/ethcore/src/lib.rs
index 6578d360714..eee076b32ea 100644
--- a/ethcore/src/lib.rs
+++ b/ethcore/src/lib.rs
@@ -15,6 +15,7 @@
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.
 
 #![warn(missing_docs, unused_extern_crates)]
+#![cfg_attr(feature = "time_checked_add", feature(time_checked_add))]
 
 //! Ethcore library
 //!
@@ -99,7 +100,6 @@ extern crate rlp;
 extern crate rustc_hex;
 extern crate serde;
 extern crate stats;
-extern crate time_utils;
 extern crate triehash_ethereum as triehash;
 extern crate unexpected;
 extern crate using_queue;
@@ -149,6 +149,9 @@ extern crate fetch;
 #[cfg(all(test, feature = "price-info"))]
 extern crate parity_runtime;
 
+#[cfg(not(time_checked_add))]
+extern crate time_utils;
+
 pub mod block;
 pub mod builtin;
 pub mod client;
diff --git a/ethcore/src/verification/verification.rs b/ethcore/src/verification/verification.rs
index 37ab1977d77..d5571198967 100644
--- a/ethcore/src/verification/verification.rs
+++ b/ethcore/src/verification/verification.rs
@@ -40,7 +40,7 @@ use types::{BlockNumber, header::Header};
 use types::transaction::SignedTransaction;
 use verification::queue::kind::blocks::Unverified;
 
-#[cfg(not(feature = "time_checked_add"))]
+#[cfg(not(time_checked_add))]
 use time_utils::CheckedSystemTime;
 
 /// Preprocessed block data gathered in `verify_block_unordered` call
diff --git a/whisper/src/lib.rs b/whisper/src/lib.rs
index ee2c6d21362..cdc88780d4d 100644
--- a/whisper/src/lib.rs
+++ b/whisper/src/lib.rs
@@ -17,6 +17,8 @@
 //! Whisper P2P messaging system as a DevP2P subprotocol, with RPC and Rust
 //! interface.
 
+#![cfg_attr(feature = "time_checked_add", feature(time_checked_add))]
+
 extern crate byteorder;
 extern crate parity_crypto as crypto;
 extern crate ethcore_network as network;
@@ -32,7 +34,6 @@ extern crate serde;
 extern crate slab;
 extern crate smallvec;
 extern crate tiny_keccak;
-extern crate time_utils;
 
 extern crate jsonrpc_core;
 extern crate jsonrpc_derive;
@@ -47,6 +48,9 @@ extern crate log;
 #[macro_use]
 extern crate serde_derive;
 
+#[cfg(not(time_checked_add))]
+extern crate time_utils;
+
 #[cfg(test)]
 extern crate serde_json;
 
diff --git a/whisper/src/message.rs b/whisper/src/message.rs
index 613a9ee71ea..0fc686e52a8 100644
--- a/whisper/src/message.rs
+++ b/whisper/src/message.rs
@@ -24,7 +24,7 @@ use rlp::{self, DecoderError, RlpStream, Rlp};
 use smallvec::SmallVec;
 use tiny_keccak::{keccak256, Keccak};
 
-#[cfg(not(feature = "time_checked_add"))]
+#[cfg(not(time_checked_add))]
 use time_utils::CheckedSystemTime;
 
 /// Work-factor proved. Takes 3 parameters: size of message, time to live,