Remove use of size_t in bindings

Bindgen now supports mapping size_t to usize by default and doing a
build time check to ensure they are the same size.  See
rust-lang/rust-bindgen#2062.

tcrypto/sys/src/lib.rs

@@ -2,15 +2,13 @@
 
 #![doc = include_str!("../README.md")]
 #![no_std]
-#![feature(c_size_t)]
 #![allow(
     non_upper_case_globals,
     non_camel_case_types,
     non_snake_case,
     rustdoc::broken_intra_doc_links
 )]
 
-use core::ffi::c_size_t as size_t;
 use mc_sgx_core_sys_types::sgx_status_t;
 
 pub use mc_sgx_tcrypto_sys_types::{

trts/sys/src/lib.rs

@@ -2,10 +2,8 @@
 
 #![doc = include_str!("../README.md")]
 #![no_std]
-#![feature(c_size_t)]
 #![allow(non_upper_case_globals, non_camel_case_types, non_snake_case)]
 
-pub use core::ffi::c_size_t as size_t;
 pub use mc_sgx_core_sys_types::sgx_status_t;
 
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));

tservice/sys/src/lib.rs

@@ -3,9 +3,7 @@
 #![doc = include_str!("../README.md")]
 #![no_std]
 #![allow(non_camel_case_types, non_snake_case, non_upper_case_globals)]
-#![feature(c_size_t)]
 
-use core::ffi::c_size_t as size_t;
 use mc_sgx_core_sys_types::{
     sgx_attributes_t, sgx_key_128bit_t, sgx_key_request_t, sgx_misc_select_t, sgx_report_data_t,
     sgx_report_t, sgx_status_t, sgx_target_info_t,

tservice/sys/types/src/lib.rs

@@ -2,15 +2,13 @@
 
 #![doc = include_str!("../README.md")]
 #![no_std]
-#![feature(c_size_t)]
 #![allow(
     clippy::missing_safety_doc,
     non_camel_case_types,
     non_snake_case,
     non_upper_case_globals
 )]
 
-use core::ffi::c_size_t as size_t;
 use mc_sgx_core_sys_types::{
     default_for_byte_struct, sgx_attributes_t, sgx_cpu_svn_t, sgx_isv_svn_t, sgx_key_request_t,
     sgx_measurement_t, sgx_misc_select_t, sgx_prod_id_t, sgx_report_t, sgx_target_info_t,

tstdc/sys/src/lib.rs

@@ -2,10 +2,8 @@
 
 #![doc = include_str!("../README.md")]
 #![no_std]
-#![feature(c_size_t)]
 #![allow(non_camel_case_types, non_snake_case, non_upper_case_globals)]
 
-pub use core::ffi::c_size_t as size_t;
 use mc_sgx_core_sys_types::sgx_status_t;
 use mc_sgx_tstdc_sys_types::{
     sgx_spinlock_t, sgx_thread_cond_t, sgx_thread_condattr_t, sgx_thread_mutex_t,

tstdc/sys/types/src/lib.rs

@@ -2,9 +2,6 @@
 
 #![doc = include_str!("../README.md")]
 #![no_std]
-#![feature(c_size_t)]
 #![allow(non_camel_case_types, non_snake_case, non_upper_case_globals)]
 
-pub use core::ffi::c_size_t as size_t;
-
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));

urts/sys/src/lib.rs

@@ -1,10 +1,8 @@
 // Copyright (c) 2022 The MobileCoin Foundation
 
 #![doc = include_str!("../README.md")]
-#![feature(c_size_t)]
 #![allow(non_camel_case_types, non_snake_case, non_upper_case_globals)]
 
-use core::ffi::c_size_t as size_t;
 use mc_sgx_core_sys_types::{sgx_status_t, sgx_target_info_t};
 use mc_sgx_urts_sys_types::{sgx_enclave_id_t, sgx_launch_token_t, sgx_misc_attribute_t};