check rust programs (#4688)

sdk/bpf/rust/rust-utils/src/entrypoint.rs

@@ -46,7 +46,7 @@ pub struct SolClusterInfo<'a> {
 macro_rules! entrypoint {
     ($process_instruction:ident) => {
         #[no_mangle]
-        pub extern "C" fn entrypoint(input: *mut u8) -> bool {
+        pub unsafe extern "C" fn entrypoint(input: *mut u8) -> bool {
             unsafe {
                 if let Ok((mut ka, info, data)) = $crate::entrypoint::deserialize(input) {
                     // Call use function
@@ -86,9 +86,9 @@ pub unsafe fn deserialize<'a>(
         return Err(());
     }
 
-    let mut ka: [Option<SolKeyedAccount>; MAX_ACCOUNTS] =
+    let mut kas: [Option<SolKeyedAccount>; MAX_ACCOUNTS] =
         [None, None, None, None, None, None, None, None, None, None];
-    for i in 0..num_ka {
+    for ka in kas.iter_mut().take(num_ka) {
         let is_signer = {
             #[allow(clippy::cast_ptr_alignment)]
             let is_signer_val = *(input.add(offset) as *const u64);
@@ -121,7 +121,7 @@ pub unsafe fn deserialize<'a>(
         };
         offset += SIZE_PUBKEY;
 
-        ka[i] = Some(SolKeyedAccount {
+        *ka = Some(SolKeyedAccount {
             key,
             is_signer,
             lamports,
@@ -149,7 +149,7 @@ pub unsafe fn deserialize<'a>(
 
     let info = SolClusterInfo { program_id };
 
-    Ok((ka, info, data))
+    Ok((kas, info, data))
 }
 
 #[cfg(test)]

sdk/bpf/rust/rust-utils/src/lib.rs

@@ -5,6 +5,8 @@
 #![feature(alloc_error_handler)]
 #![feature(panic_info_message)]
 #![feature(compiler_builtins_lib)]
+#![feature(lang_items)]
+#[lang = "eh_personality"] extern fn eh_personality() {}
 
 extern crate compiler_builtins;
 

sdk/bpf/rust/rust-utils/src/panic.rs

@@ -1,6 +1,7 @@
 //! @brief Solana Rust-based BPF program panic handling
 
 use core::panic::PanicInfo;
+use core::ptr;
 
 #[cfg(not(test))]
 #[panic_handler]
@@ -22,7 +23,7 @@ fn panic(info: &PanicInfo) -> ! {
                 );
             }
         }
-        None => unsafe { sol_panic_(0 as *const u8, 0, 0) },
+        None => unsafe { sol_panic_(ptr::null(), 0, 0) },
     }
 }
 extern "C" {