fix: fix build, improve error handling

Signed-off-by: Henry Gressmann <mail@henrygressmann.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/examples/rust/src/print.rs b/examples/rust/src/print.rs
index d04daa3..d2934f0 100644
--- a/examples/rust/src/print.rs
+++ b/examples/rust/src/print.rs
@@ -1,11 +1,11 @@
 #![no_main]
 
 #[link(wasm_import_module = "env")]
-extern "C" {
+unsafe extern "C" {
     fn printi32(x: i32);
 }
 
-#[no_mangle]
+#[unsafe(no_mangle)]
 pub unsafe extern "C" fn add_and_print(lh: i32, rh: i32) {
     printi32(lh + rh);
 }