runtime.rs

	//
	// # Errors
	//
	// `ReturnCode::CodeNotFound`
	[__unstable__] seal_set_code_hash(ctx, code_hash_ptr: u32) -> ReturnCode => {
		ctx.charge_gas(RuntimeCosts::SetCodeHash)?;
		let code_hash: CodeHash<<E as Ext>::T> = ctx.read_sandbox_memory_as(code_hash_ptr)?;
		match ctx.ext.set_code_hash(code_hash) {
			Err(err) =>	{
				let code = Runtime::<E>::err_into_return_code(err)?;
				Ok(code)
			},
			Ok(()) => Ok(ReturnCode::Success)
		}
	},
);