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#[no_mangle]pub extern "C" fn test_sync() -> i8 {  1}
#[no_mangle]pub extern "C" fn test_buffer() -> f64 {  println!("helloooo");  let ptr = [1, 2, 3, 4, 5, 6, 7, 8].as_ptr();  println!("Ptr is {:?}", ptr);  123.123}