Companion PR to Substrate #5680

[apopiak]

paritytech/substrate#5680

[parity-cla-bot]

It looks like @apopiak signed our Contributor License Agreement. 👍

Many thanks,

Parity Technologies CLA Bot

[apopiak]

This branch builds fine locally (with cargo build) except for this diff:

diff --git a/parachain/src/wasm_executor/mod.rs b/parachain/src/wasm_executor/mod.rs
index 64c27278..a7fd92c4 100644
--- a/parachain/src/wasm_executor/mod.rs
+++ b/parachain/src/wasm_executor/mod.rs
@@ -183,7 +183,6 @@ pub fn validate_candidate_internal<E: Externalities + 'static>(
 		// TODO: Make sure we don't use more than 1GB: https://github.com/paritytech/polkadot/issues/699
 		Some(1024),
 		HostFunctions::host_functions(),
-		false,
 		8
 	);
 	let res = executor.call_in_wasm(
@@ -192,6 +191,7 @@ pub fn validate_candidate_internal<E: Externalities + 'static>(
 		"validate_block",
 		encoded_call_data,
 		&mut ext,
+		sp_core::traits::MissingHostFunctions::Allow
 	)?;
 
 	ValidationResult::decode(&mut &res[..]).map_err(|_| Error::BadReturn.into())

which seems unrelated to my changes.
Seems related to #1026

[andresilva]

Merge master into your branch once #1026 is merged and it should be fixed.

[andresilva]

Added this to #1012 as there was a cyclic dependency here.

[apopiak]

sure