Implement delegation clearing

ethereum · Nov 22, 2024 · d487ec5 · d487ec5
1 parent c2e2105
commit d487ec5
Showing 1 changed file with 19 additions and 10 deletions.
diff --git a/test/state/state.cpp b/test/state/state.cpp
@@ -506,16 +506,25 @@ TransactionReceipt transition(const StateView& state_view, const BlockInfo& bloc
                 continue;
         }
 
-        const bytes new_code(bytes(DELEGATION_MAGIC) + bytes(auth.addr));
-        authority_ptr->code_changed = (authority_ptr->code != new_code);
-        authority_ptr->code = new_code;
-
-        // TODO The hash of delegated accounts is not used anywhere,
-        // it is only important that it is not a hash of empty.
-        // We could avoid this hashing, if we found a way to not rely only on code_hash for
-        // emptiness checks.
-        // (e.g for emptiness check code_hash == EMPTY_CODE_HASH && !code_changed)
-        authority_ptr->code_hash = keccak256(authority_ptr->code);
+        if (auth.addr == address{})
+        {
+            authority_ptr->code_changed = !authority_ptr->code.empty();
+            authority_ptr->code.clear();
+            authority_ptr->code_hash = Account::EMPTY_CODE_HASH;
+        }
+        else
+        {
+            const bytes new_code(bytes(DELEGATION_MAGIC) + bytes(auth.addr));
+            authority_ptr->code_changed = (authority_ptr->code != new_code);
+            authority_ptr->code = new_code;
+
+            // TODO The hash of delegated accounts is not used anywhere,
+            // it is only important that it is not a hash of empty.
+            // We could avoid this hashing, if we found a way to not rely only on code_hash for
+            // emptiness checks.
+            // (e.g for emptiness check code_hash == EMPTY_CODE_HASH && !code_changed)
+            authority_ptr->code_hash = keccak256(authority_ptr->code);
+        }
 
         ++authority_ptr->nonce;
     }