Fix Ethereum non-compliance in JUMPI (#67)

rust-ethereum · Oct 18, 2021 · 15a867f · 15a867f
1 parent b632ef2
commit 15a867f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/core/src/eval/misc.rs b/core/src/eval/misc.rs
@@ -126,9 +126,9 @@ pub fn jump(state: &mut Machine) -> Control {
 pub fn jumpi(state: &mut Machine) -> Control {
 	pop_u256!(state, dest);
 	pop!(state, value);
-	let dest = as_usize_or_fail!(dest, ExitError::InvalidJump);
 
 	if value != H256::zero() {
+		let dest = as_usize_or_fail!(dest, ExitError::InvalidJump);
 		if state.valids.is_valid(dest) {
 			Control::Jump(dest)
 		} else {