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use super::*;
use crate::ptr;
// Verify that the byte pattern libunwind uses to initialize an RwLock is
// equivalent to the value of RwLock::new(). If the value changes,
// `src/UnwindRustSgx.h` in libunwind needs to be changed too.
#[test]
fn test_c_rwlock_initializer() {
const C_RWLOCK_INIT: *mut () = ptr::null_mut();
// For the test to work, we need the padding/unused bytes in RwLock to be
// initialized as 0. In practice, this is the case with statics.
static RUST_RWLOCK_INIT: RwLock = RwLock::new();
unsafe {
// If the assertion fails, that not necessarily an issue with the value
// of C_RWLOCK_INIT. It might just be an issue with the way padding
// bytes are initialized in the test code.
assert_eq!(crate::mem::transmute_copy::<_, *mut ()>(&RUST_RWLOCK_INIT), C_RWLOCK_INIT);
};
}
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