1 files changed, 12 insertions, 0 deletions
diff --git a/test_ffi/src/lib.rs b/test_ffi/src/lib.rs
index 38275e547..b0206276a 100644
--- a/test_ffi/src/lib.rs
+++ b/test_ffi/src/lib.rs
@@ -3,6 +3,8 @@
 use std::thread::sleep;
 use std::time::Duration;
 
+static BUFFER: [u8; 8] = [1, 2, 3, 4, 5, 6, 7, 8];
+
 #[no_mangle]
 pub extern "C" fn print_something() {
   println!("something");
@@ -29,6 +31,16 @@ pub extern "C" fn print_buffer2(
 }
 
 #[no_mangle]
+pub extern "C" fn return_buffer() -> *const u8 {
+  BUFFER.as_ptr()
+}
+
+#[no_mangle]
+pub extern "C" fn is_null_ptr(ptr: *const u8) -> u8 {
+  ptr.is_null() as u8
+}
+
+#[no_mangle]
 pub extern "C" fn add_u32(a: u32, b: u32) -> u32 {
   a + b
 }