♻️ Fix CallContextChecker EIP-7702 check (#1356)

Vectorized · Feb 17, 2025 · 29b5dbe · 29b5dbe
1 parent 30a0de6
commit 29b5dbe
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/utils/CallContextChecker.sol b/src/utils/CallContextChecker.sol
@@ -35,8 +35,9 @@ contract CallContextChecker {
         /// @solidity memory-safe-assembly
         assembly {
             extcodecopy(address(), 0x00, 0x00, 0x20)
-            result :=
-                and(eq(0xef0100, shr(232, mload(0x00))), lt(sub(extcodesize(address()), 1), 23))
+            // Note: checking that it starts with hex"ef01" is the most general and futureproof.
+            // 7702 bytecode is `abi.encodePacked(hex"ef01", uint8(version), address(delegation))`.
+            result := eq(0xef01, shr(240, mload(0x00)))
         }
     }