Adds feature reject_empty_instruction_without_program. (#21591)

runtime/src/bank.rs

@@ -6506,6 +6506,7 @@ pub(crate) mod tests {
         compute_budget::ComputeBudgetInstruction,
         epoch_schedule::MINIMUM_SLOTS_PER_EPOCH,
         feature::Feature,
+        feature_set::reject_empty_instruction_without_program,
         genesis_config::create_genesis_config,
         hash,
         instruction::{AccountMeta, CompiledInstruction, Instruction, InstructionError},
@@ -15445,17 +15446,23 @@ pub(crate) mod tests {
     }
 
     #[test]
-    fn test_an_empty_transaction_without_program() {
+    fn test_an_empty_instruction_without_program() {
         let (genesis_config, mint_keypair) = create_genesis_config(1);
-        let bank = Bank::new_for_tests(&genesis_config);
-
         let destination = solana_sdk::pubkey::new_rand();
         let mut ix = system_instruction::transfer(&mint_keypair.pubkey(), &destination, 0);
         ix.program_id = native_loader::id(); // Empty executable account chain
-
         let message = Message::new(&[ix], Some(&mint_keypair.pubkey()));
         let tx = Transaction::new(&[&mint_keypair], message, genesis_config.hash());
+
+        let bank = Bank::new_for_tests(&genesis_config);
         bank.process_transaction(&tx).unwrap();
+
+        let mut bank = Bank::new_for_tests(&genesis_config);
+        bank.activate_feature(&reject_empty_instruction_without_program::id());
+        assert_eq!(
+            bank.process_transaction(&tx).unwrap_err(),
+            TransactionError::InstructionError(0, InstructionError::UnsupportedProgramId),
+        );
     }
 
     #[test]