From 7cf83c74c7123dad0bb0d4b8926e08849d071a3d Mon Sep 17 00:00:00 2001
From: panukettu <panu@0xp.lol>
Date: Sun, 19 Nov 2023 02:09:03 +0200
Subject: [PATCH] fix: check for negative amount in toWad

---
 src/contracts/core/common/Errors.sol     | 1 +
 src/contracts/core/common/funcs/Math.sol | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/src/contracts/core/common/Errors.sol b/src/contracts/core/common/Errors.sol
index ac3adee7..659c28ff 100644
--- a/src/contracts/core/common/Errors.sol
+++ b/src/contracts/core/common/Errors.sol
@@ -23,6 +23,7 @@ library Errors {
 
     error ADDRESS_HAS_NO_CODE(address);
     error NOT_INITIALIZING();
+    error TO_WAD_AMOUNT_IS_NEGATIVE(int256);
     error COMMON_ALREADY_INITIALIZED();
     error MINTER_ALREADY_INITIALIZED();
     error SCDP_ALREADY_INITIALIZED();
diff --git a/src/contracts/core/common/funcs/Math.sol b/src/contracts/core/common/funcs/Math.sol
index 5722b8e3..09fd20d4 100644
--- a/src/contracts/core/common/funcs/Math.sol
+++ b/src/contracts/core/common/funcs/Math.sol
@@ -3,6 +3,7 @@ pragma solidity 0.8.21;
 
 import {WadRay} from "libs/WadRay.sol";
 import {PercentageMath} from "libs/PercentageMath.sol";
+import {Errors} from "common/Errors.sol";
 
 using WadRay for uint256;
 using PercentageMath for uint256;
@@ -47,6 +48,9 @@ function toWad(uint256 _amount, uint8 _decimals) pure returns (uint256) {
 }
 
 function toWad(int256 _amount, uint8 _decimals) pure returns (uint256) {
+    if (_amount < 0) {
+        revert Errors.TO_WAD_AMOUNT_IS_NEGATIVE(_amount);
+    }
     return toWad(uint256(_amount), _decimals);
 }