Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 20 insertions, 0 deletions

diff --git a/library/std/src/os/wasi/io/fd.rs b/library/std/src/os/wasi/io/fd.rs
new file mode 100644
index 000000000..930aca887
--- /dev/null
+++ b/library/std/src/os/wasi/io/fd.rs
@@ -0,0 +1,9 @@
+//! Owned and borrowed file descriptors.
+
+#![unstable(feature = "wasi_ext", issue = "71213")]
+
+// Tests for this module
+#[cfg(test)]
+mod tests;
+
+pub use crate::os::fd::owned::*;
diff --git a/library/std/src/os/wasi/io/fd/tests.rs b/library/std/src/os/wasi/io/fd/tests.rs
new file mode 100644
index 000000000..418274752
--- /dev/null
+++ b/library/std/src/os/wasi/io/fd/tests.rs
@@ -0,0 +1,11 @@
+use crate::mem::size_of;
+use crate::os::wasi::io::RawFd;
+
+#[test]
+fn test_raw_fd_layout() {
+    // `OwnedFd` and `BorrowedFd` use `rustc_layout_scalar_valid_range_start`
+    // and `rustc_layout_scalar_valid_range_end`, with values that depend on
+    // the bit width of `RawFd`. If this ever changes, those values will need
+    // to be updated.
+    assert_eq!(size_of::<RawFd>(), 4);
+}