45 lines
1.5 KiB
Rust
45 lines
1.5 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#![no_std]
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#![no_main]
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use common::output;
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use uapi::{HostFn, HostFnImpl as api};
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#[no_mangle]
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#[polkavm_derive::polkavm_export]
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pub extern "C" fn deploy() {}
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#[no_mangle]
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#[polkavm_derive::polkavm_export]
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pub extern "C" fn call() {
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output!(balance, [0u8; 8], api::balance,);
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let balance = u64::from_le_bytes(balance[..].try_into().unwrap());
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output!(minimum_balance, [0u8; 8], api::minimum_balance,);
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let minimum_balance = u64::from_le_bytes(minimum_balance[..].try_into().unwrap());
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// Make the transferred value exceed the balance by adding the minimum balance.
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let balance = balance + minimum_balance;
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// Try to self-destruct by sending more balance to the 0 address.
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// The call will fail because a contract transfer has a keep alive requirement.
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let res = api::transfer(&[0u8; 32], &balance.to_le_bytes());
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assert!(matches!(res, Err(uapi::ReturnErrorCode::TransferFailed)));
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}
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