1 files changed, 77 insertions, 0 deletions
diff --git a/vendor/rustix/tests/time/y2038.rs b/vendor/rustix/tests/time/y2038.rs
new file mode 100644
index 000000000..45a073d19
--- /dev/null
+++ b/vendor/rustix/tests/time/y2038.rs
@@ -0,0 +1,77 @@
+/// Test that `Timespec` and `Secs` support a 64-bit number of seconds,
+/// avoiding the y2038 bug.
+///
+/// The Rust Musl target and libc crate are currently using Musl 1.1. It is
+/// expected to update to Musl 1.2 at some point, at which point it'll gain a
+/// 64-bit `time_t`.
+///
+/// 32-bit Android is [not y2038 compatible]. In theory we could use
+/// `libc::syscall` and call the new syscalls ourselves, however that doesn't
+/// seem worth the effort on a platform that will likely never support add
+/// such support itself.
+///
+/// [not y2038 compatible]: https://android.googlesource.com/platform/bionic/+/refs/heads/master/docs/32-bit-abi.md#is-32_bit-on-lp32-y2038
+#[cfg(not(all(target_env = "musl", target_pointer_width = "32")))]
+#[cfg(not(all(target_os = "android", target_pointer_width = "32")))]
+#[cfg(not(all(target_os = "emscripten", target_pointer_width = "32")))]
+#[test]
+fn test_y2038() {
+    use rustix::time::{Secs, Timespec};
+
+    let tv_sec: i64 = 0;
+    let _ = Timespec { tv_sec, tv_nsec: 0 };
+    let _: Secs = tv_sec;
+
+    #[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+    {
+        use rustix::time::Itimerspec;
+
+        let _ = Itimerspec {
+            it_interval: Timespec { tv_sec, tv_nsec: 0 },
+            it_value: Timespec { tv_sec, tv_nsec: 0 },
+        };
+    }
+}
+
+#[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
+#[test]
+fn test_y2038_with_timerfd() {
+    use rustix::time::{
+        timerfd_create, timerfd_gettime, timerfd_settime, Itimerspec, TimerfdClockId, TimerfdFlags,
+        TimerfdTimerFlags, Timespec,
+    };
+
+    let fd = timerfd_create(TimerfdClockId::Monotonic, TimerfdFlags::CLOEXEC).unwrap();
+
+    let set = Itimerspec {
+        it_interval: Timespec {
+            tv_sec: (1_u64 << 32) as _,
+            tv_nsec: 20,
+        },
+        it_value: Timespec {
+            tv_sec: (1_u64 << 32) as _,
+            tv_nsec: 21,
+        },
+    };
+    let _old: Itimerspec = match timerfd_settime(&fd, TimerfdTimerFlags::ABSTIME, &set) {
+        Ok(i) => i,
+
+        // On 32-bit and mips64 platforms, accept `EOVERFLOW`, meaning that
+        // y2038 support in `timerfd` APIs is not available on this platform
+        // or this version of the platform.
+        #[cfg(any(target_pointer_width = "32", target_arch = "mips64"))]
+        Err(rustix::io::Errno::OVERFLOW) => return,
+
+        Err(e) => panic!("unexpected error: {:?}", e),
+    };
+
+    let new = timerfd_gettime(&fd).unwrap();
+
+    // The timer counts down.
+    assert_eq!(set.it_interval.tv_sec, new.it_interval.tv_sec);
+    assert_eq!(set.it_interval.tv_nsec, new.it_interval.tv_nsec);
+    assert!(new.it_value.tv_sec <= set.it_value.tv_sec);
+    assert!(
+        new.it_value.tv_nsec < set.it_value.tv_nsec || new.it_value.tv_sec < set.it_value.tv_sec
+    );
+}