Add C Serialization Tests for #17217 (#17294)

programs/bpf/c/src/ser/ser.c

@@ -0,0 +1,34 @@
+/**
+ * @brief Example C-based BPF sanity rogram that prints out the parameters
+ * passed to it
+ */
+#include <solana_sdk.h>
+
+extern uint64_t entrypoint(const uint8_t *input) {
+  SolAccountInfo ka[1];
+  SolParameters params = (SolParameters){.ka = ka};
+
+  sol_log(__FILE__);
+
+  if (!sol_deserialize(input, &params, SOL_ARRAY_SIZE(ka))) {
+    return ERROR_INVALID_ARGUMENT;
+  }
+
+  char ka_data[] = {1, 2, 3};
+  SolPubkey ka_owner;
+  sol_assert(params.ka_num == 2);
+  for (int i = 0; i < 2; i++) {
+    sol_assert(*params.ka[i].lamports == 42);
+    sol_assert(!sol_memcmp(params.ka[i].data, ka_data, 4));
+    sol_assert(SolPubkey_same(params.ka[i].owner, &ka_owner));
+    sol_assert(params.ka[i].is_signer == false);
+    sol_assert(params.ka[i].is_writable == false);
+    sol_assert(params.ka[i].executable == false);
+  }
+
+  char data[] = {4, 5, 6, 7};
+  sol_assert(params.data_len = 4);
+  sol_assert(!sol_memcmp(params.data, data, 4));
+
+  return SUCCESS;
+}

programs/bpf/tests/programs.rs

@@ -1912,6 +1912,38 @@ fn test_program_bpf_disguised_as_bpf_loader() {
     }
 }
 
+#[test]
+#[cfg(feature = "bpf_c")]
+fn test_program_bpf_c_dup() {
+    solana_logger::setup();
+
+    let GenesisConfigInfo {
+        genesis_config,
+        mint_keypair,
+        ..
+    } = create_genesis_config(50);
+    let mut bank = Bank::new(&genesis_config);
+    let (name, id, entrypoint) = solana_bpf_loader_program!();
+    bank.add_builtin(&name, id, entrypoint);
+
+    let account_address = Pubkey::new_unique();
+    let account =
+        AccountSharedData::new_data(42, &[1_u8, 2, 3], &solana_sdk::system_program::id()).unwrap();
+    bank.store_account(&account_address, &account);
+
+    let bank_client = BankClient::new(bank);
+
+    let program_id = load_bpf_program(&bank_client, &bpf_loader::id(), &mint_keypair, "ser");
+    let account_metas = vec![
+        AccountMeta::new_readonly(account_address, false),
+        AccountMeta::new_readonly(account_address, false),
+    ];
+    let instruction = Instruction::new_with_bytes(program_id, &[4, 5, 6, 7], account_metas);
+    bank_client
+        .send_and_confirm_instruction(&mint_keypair, instruction)
+        .unwrap();
+}
+
 #[cfg(feature = "bpf_rust")]
 #[test]
 fn test_program_bpf_upgrade_via_cpi() {