1 files changed, 52 insertions, 0 deletions
diff --git a/third_party/rust/same-file/src/unknown.rs b/third_party/rust/same-file/src/unknown.rs
new file mode 100644
index 0000000000..6bfbdea0d6
--- /dev/null
+++ b/third_party/rust/same-file/src/unknown.rs
@@ -0,0 +1,52 @@
+use std::fs::File;
+use std::io;
+use std::path::Path;
+
+static ERROR_MESSAGE: &str = "same-file is not supported on this platform.";
+// This implementation is to allow same-file to be compiled on
+// unsupported platforms in case it was incidentally included
+// as a transitive, unused dependency
+#[derive(Debug, Hash)]
+pub struct Handle;
+
+impl Eq for Handle {}
+
+impl PartialEq for Handle {
+    fn eq(&self, _other: &Handle) -> bool {
+        unreachable!(ERROR_MESSAGE);
+    }
+}
+
+impl Handle {
+    pub fn from_path<P: AsRef<Path>>(_p: P) -> io::Result<Handle> {
+        error()
+    }
+
+    pub fn from_file(_file: File) -> io::Result<Handle> {
+        error()
+    }
+
+    pub fn stdin() -> io::Result<Handle> {
+        error()
+    }
+
+    pub fn stdout() -> io::Result<Handle> {
+        error()
+    }
+
+    pub fn stderr() -> io::Result<Handle> {
+        error()
+    }
+
+    pub fn as_file(&self) -> &File {
+        unreachable!(ERROR_MESSAGE);
+    }
+
+    pub fn as_file_mut(&self) -> &mut File {
+        unreachable!(ERROR_MESSAGE);
+    }
+}
+
+fn error<T>() -> io::Result<T> {
+    Err(io::Error::new(io::ErrorKind::Other, ERROR_MESSAGE))
+}