1 files changed, 9 insertions, 0 deletions
diff --git a/vendor/rustix/src/backend/libc/io/types.rs b/vendor/rustix/src/backend/libc/io/types.rs
index 8743336f2..eaf3eae71 100644
--- a/vendor/rustix/src/backend/libc/io/types.rs
+++ b/vendor/rustix/src/backend/libc/io/types.rs
@@ -11,6 +11,9 @@ bitflags! {
     pub struct FdFlags: u32 {
         /// `FD_CLOEXEC`
         const CLOEXEC = bitcast!(c::FD_CLOEXEC);
+
+        /// <https://docs.rs/bitflags/latest/bitflags/#externally-defined-flags>
+        const _ = !0;
     }
 }
 
@@ -33,6 +36,9 @@ bitflags! {
         const NOWAIT = linux_raw_sys::general::RWF_NOWAIT;
         /// `RWF_APPEND` (since Linux 4.16)
         const APPEND = linux_raw_sys::general::RWF_APPEND;
+
+        /// <https://docs.rs/bitflags/latest/bitflags/#externally-defined-flags>
+        const _ = !0;
     }
 }
 
@@ -52,5 +58,8 @@ bitflags! {
             target_os = "redox",
         )))] // Android 5.0 has dup3, but libc doesn't have bindings
         const CLOEXEC = bitcast!(c::O_CLOEXEC);
+
+        /// <https://docs.rs/bitflags/latest/bitflags/#externally-defined-flags>
+        const _ = !0;
     }
 }