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substrate/frame/revive/uapi/src/host.rs

@@ -244,6 +244,12 @@ pub trait HostFn: private::Sealed {
 	///
 	/// - `addr`: The address of the contract.
 	/// - `output`: A reference to the output data buffer to write the code hash.
+	///
+	/// # Note
+	///
+	/// If `addr` is not a contract but account exists then hash of empty data
+	/// `0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470` is written,
+	/// otherwise `zero`.
 	fn code_hash(addr: &[u8; 20], output: &mut [u8; 32]);
 
 	/// Checks whether there is a value stored under the given key.