From d5714c86e949c58939f273c3edb5095c22877079 Mon Sep 17 00:00:00 2001
From: Brean0 <midoryia33@proton.me>
Date: Mon, 23 Sep 2024 08:46:11 -0500
Subject: [PATCH] add tryCatch to LibDeltaB

---
 .../contracts/libraries/Oracle/LibDeltaB.sol  | 21 +++++++++++--------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/protocol/contracts/libraries/Oracle/LibDeltaB.sol b/protocol/contracts/libraries/Oracle/LibDeltaB.sol
index d5eab259b..6f84694a7 100644
--- a/protocol/contracts/libraries/Oracle/LibDeltaB.sol
+++ b/protocol/contracts/libraries/Oracle/LibDeltaB.sol
@@ -184,14 +184,17 @@ library LibDeltaB {
             revert("Well: USD Oracle call failed");
         }
 
-        return
-            int256(
-                IBeanstalkWellFunction(wellFunction.target).calcReserveAtRatioSwap(
-                    reserves,
-                    beanIndex,
-                    ratios,
-                    wellFunction.data
-                )
-            ).sub(int256(reserves[beanIndex]));
+        try
+            IBeanstalkWellFunction(wellFunction.target).calcReserveAtRatioSwap(
+                reserves,
+                beanIndex,
+                ratios,
+                wellFunction.data
+            )
+        returns (uint256 reserve) {
+            return int256(reserve).sub(int256(reserves[beanIndex]));
+        } catch {
+            return 0;
+        }
     }
 }