Forge test reports a huge gas number if vm.pauseGasMetering is in effect at the end of a test

[emo-eth]

Component

Forge

Have you ensured that all of these are up to date?

• [X] Foundry
• [X] Foundryup

What version of Foundry are you on?

forge 0.2.0 (0e33b3e 2023-07-28T00:23:39.362605000Z)

What command(s) is the bug in?

forge test

Operating System

macOS (Apple Silicon)

Describe the bug

If a test completes after calling vm.pauseGasMetering(), and without calling vm.resumeGasMetering(), it will report gas usage is exactly 9223372036854754743 (2**63 - 21065?).

Minimal reproduction:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

import {Test} from "forge-std/Test.sol";

contract PauseTest is Test {
    function testWeirdGas1() public {
        vm.pauseGasMetering();
    }

    function testWeirdGas2() public {
        uint256 a = 1;
        uint256 b = a + 1;
        require(b == 2, "b is not 2");
        vm.pauseGasMetering();
    }

    function testNormalGas() public {
        vm.pauseGasMetering();
        vm.resumeGasMetering();
    }
}

Output:

[⠰] Compiling...
[⠢] Compiling 1 files with 0.8.20
[⠰] Solc 0.8.20 finished in 729.32ms
Compiler run successful!

Running 3 tests for test/PauseTest.t.sol:PauseTest
[PASS] testNormalGas() (gas: 3179)
[PASS] testWeirdGas1() (gas: 9223372036854754743)
[PASS] testWeirdGas2() (gas: 9223372036854754743)
Test result: ok. 3 passed; 0 failed; 0 skipped; finished in 306.25µs
Ran 1 test suites: 3 tests passed, 0 failed, 0 skipped (3 total tests)

[zerosnacks]

Related: https://github.com/foundry-rs/foundry/issues/4370