Address review feedback

Author: joncinque

program/src/lib.rs

@@ -502,6 +502,10 @@ pub mod log;
 pub mod nonce;
 pub mod program;
 pub mod program_error;
+#[deprecated(
+    since = "2.3.0",
+    note = "Use `solana_bincode::limited_deserialize` instead"
+)]
 pub mod program_utils;
 pub mod secp256k1_program;
 pub mod slot_hashes;

sdk/src/lib.rs

@@ -126,7 +126,10 @@ pub mod system_instruction {
     #[allow(deprecated)]
     pub use solana_program::system_instruction::*;
 }
-#[deprecated(since = "2.3.0", note = "Use `solana_sdk_ids::system_program` instead")]
+#[deprecated(
+    since = "2.3.0",
+    note = "Use `solana_system_interface::program` instead"
+)]
 pub mod system_program {
     #[allow(deprecated)]
     pub use solana_program::system_program::*;
@@ -372,7 +375,7 @@ pub mod exit {
 }
 
 /// Convenience macro for `AddAssign` with saturating arithmetic.
-/// Replace by `std::num::Saturating` once stable
+#[deprecated(since = "2.3.0", note = "Use `std::num::Saturating` instead")]
 #[macro_export]
 macro_rules! saturating_add_assign {
     ($i:expr, $v:expr) => {{
@@ -383,6 +386,7 @@ macro_rules! saturating_add_assign {
 pub extern crate bs58;
 
 #[cfg(test)]
+#[allow(deprecated)]
 mod tests {
     #[test]
     fn test_saturating_add_assign() {

sdk/src/program_utils.rs

@@ -6,6 +6,10 @@ use crate::instruction::InstructionError;
 
 /// Deserialize with a limit based the maximum amount of data a program can expect to get.
 /// This function should be used in place of direct deserialization to help prevent OOM errors
+#[deprecated(
+    since = "2.3.0",
+    note = "Use `solana_bincode::limited_deserialize` instead"
+)]
 pub fn limited_deserialize<T>(instruction_data: &[u8]) -> Result<T, InstructionError>
 where
     T: serde::de::DeserializeOwned,
@@ -17,6 +21,7 @@ where
 }
 
 #[cfg(test)]
+#[allow(deprecated)]
 pub mod tests {
     use super::*;
 

sdk/src/rpc_port.rs

@@ -1,3 +1,4 @@
+#![deprecated(since = "2.3.0", note = "Use `solana_rpc_client_api::port` instead")]
 //! RPC default port numbers.
 
 /// Default port number for JSON RPC API