#[unsafe(no_mangle)]pub unsafe extern "C" fn pthread_attr_getguardsize(
attr: *const pthread_attr_t,
size: *mut size_t,
) -> c_int#[unsafe(no_mangle)]pub unsafe extern "C" fn pthread_attr_getguardsize(
attr: *const pthread_attr_t,
size: *mut size_t,
) -> c_int