1 files changed, 14 insertions, 0 deletions
diff --git a/src/errors.rs b/src/errors.rs
new file mode 100644
index 0000000..bf3fb4c
--- /dev/null
+++ b/src/errors.rs
@@ -0,0 +1,14 @@
+use std::error;
+use std::fmt;
+
+/// Returned when borrowing fails.
+#[derive(Debug)]
+pub struct InvalidThreadAccess;
+
+impl fmt::Display for InvalidThreadAccess {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "fragile value accessed from foreign thread")
+    }
+}
+
+impl error::Error for InvalidThreadAccess {}