evm: fix swapn stack validation

ethereumjs · Aug 7, 2024 · 1a8e23a · 1a8e23a
1 parent d2cef57
commit 1a8e23a
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/packages/evm/src/eof/verify.ts b/packages/evm/src/eof/verify.ts
@@ -369,9 +369,7 @@ function validateOpcodes(
       } else if (opcode === 0xe7) {
         // SWAPN
         const toSwap = code[ptr + 1]
-        // TODO: EVMONEs test wants this to be `toSwap + 2`, but that seems to be incorrect
-        // Will keep `toSwap + 1` for now
-        if (toSwap + 1 > minStackCurrent) {
+        if (toSwap + 2 > minStackCurrent) {
           validationError(EOFError.StackUnderflow)
         }
       } else if (opcode === 0xe8) {