blockchaintest: Simplify genesis handling (#954)

Do not execute system contracts on the blockchain test genesis block.
It is unspecified how they should behave and the genesis block
is expected to be a static block without transactions.

Instead just validate there are no transactions/receipt/withdrowals
referenced by the genesis block header.

test/blockchaintest/blockchaintest_runner.cpp

@@ -125,40 +125,21 @@ void run_blockchain_tests(std::span<const BlockchainTest> tests, evmc::VM& vm)
         SCOPED_TRACE(std::string{evmc::to_string(c.rev.get_revision(0))} + '/' +
                      std::to_string(case_index) + '/' + c.name);
 
-        auto state = c.pre_state.to_intra_state();
+        // Validate the genesis block header.
+        EXPECT_EQ(c.genesis_block_header.block_number, 0);
+        EXPECT_EQ(c.genesis_block_header.gas_used, 0);
+        EXPECT_EQ(c.genesis_block_header.transactions_root, state::EMPTY_MPT_HASH);
+        EXPECT_EQ(c.genesis_block_header.receipts_root, state::EMPTY_MPT_HASH);
+        EXPECT_EQ(c.genesis_block_header.withdrawal_root,
+            c.rev.get_revision(c.genesis_block_header.timestamp) >= EVMC_SHANGHAI ?
+                state::EMPTY_MPT_HASH :
+                bytes32{});
+        EXPECT_EQ(c.genesis_block_header.logs_bloom, bytes_view{state::BloomFilter{}});
 
-        const state::BlockInfo genesis{
-            .number = c.genesis_block_header.block_number,
-            .timestamp = c.genesis_block_header.timestamp,
-            .parent_timestamp = 0,
-            .gas_limit = c.genesis_block_header.gas_limit,
-            .coinbase = c.genesis_block_header.coinbase,
-            .difficulty = c.genesis_block_header.difficulty,
-            .parent_difficulty = 0,
-            .parent_ommers_hash = {},
-            .prev_randao = c.genesis_block_header.prev_randao,
-            .base_fee = c.genesis_block_header.base_fee_per_gas,
-            .ommers = {},
-            .withdrawals = {},
-            .known_block_hashes = {},
-        };
-
-        const auto genesis_res = apply_block(state, vm, genesis, {}, c.rev.get_revision(0), {});
-
-        EXPECT_EQ(state::mpt_hash(TestState{state}), state::mpt_hash(c.pre_state));
-
-        if (c.rev.get_revision(0) >= EVMC_SHANGHAI)
-        {
-            EXPECT_EQ(state::mpt_hash(genesis.withdrawals), c.genesis_block_header.withdrawal_root);
-        }
-
-        EXPECT_EQ(state::mpt_hash({}), c.genesis_block_header.transactions_root);
-        EXPECT_EQ(state::mpt_hash(genesis_res.receipts), c.genesis_block_header.receipts_root);
-        EXPECT_EQ(genesis_res.gas_used, c.genesis_block_header.gas_used);
-        EXPECT_EQ(bytes_view{genesis_res.bloom}, bytes_view{c.genesis_block_header.logs_bloom});
+        auto state = c.pre_state.to_intra_state();
 
-        std::unordered_map<int64_t, hash256> known_block_hashes;
-        known_block_hashes[c.genesis_block_header.block_number] = c.genesis_block_header.hash;
+        std::unordered_map<int64_t, hash256> known_block_hashes{
+            {c.genesis_block_header.block_number, c.genesis_block_header.hash}};
 
         for (const auto& test_block : c.test_blocks)
         {