only run test on rust guest

Signed-off-by: Ludvig Liljenberg <[email protected]>

Author: ludfjig

src/hyperlight_host/tests/integration_test.rs

@@ -495,7 +495,7 @@ fn recursive_stack_allocate_overflow() {
 
 #[test]
 fn read_invalid_address() {
-    let sbox1: SingleUseSandbox = new_uninit().unwrap().evolve(Noop::default()).unwrap();
+    let sbox1: SingleUseSandbox = new_uninit_rust().unwrap().evolve(Noop::default()).unwrap();
 
     let res = sbox1
         .call_guest_function_by_name("MmioRead", ReturnType::Int, None)

src/tests/rust_guests/simpleguest/src/main.rs

@@ -727,8 +727,7 @@ fn add(function_call: &FunctionCall) -> Result<Vec<u8>> {
 // Used to test the behavior of the sandbox when reading from an invalid address.
 // Currently, the vm will exit with an MMIO exit
 fn mmio_read(_: &FunctionCall) -> Result<Vec<u8>> {
-    let ptr: *const i32 = core::ptr::null();
-    let val = unsafe { *(ptr.add(5000000)) };
+    let val = unsafe { core::ptr::null::<i32>().add(0x400000).read() };
     Ok(get_flatbuffer_result_from_int(val))
 }