fix edge case where t1 = type(int256).min

Amxx · Jan 19, 2024 · 32fbe53 · 32fbe53
1 parent 0ad5cd4
commit 32fbe53
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/contracts/utils/math/Math.sol b/contracts/utils/math/Math.sol
@@ -3,6 +3,8 @@
 
 pragma solidity ^0.8.20;
 
+import "./SignedMath.sol";
+
 /**
  * @dev Standard math utilities missing in the Solidity language.
  */
@@ -239,7 +241,7 @@ library Math {
                 (t1, t2, r2, r1) = (t2, t1 - t2 * int256(q), r1, r2 - r1 * q);
             }
             if (r2 != 1) return 0;
-            return t1 < 0 ? (p - uint256(-t1)) : uint256(t1);
+            return t1 < 0 ? p - SignedMath.abs(-t1) : uint256(t1);
         }
     }