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-rw-r--r--src/libstd/rt/rtio.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstd/rt/rtio.rs b/src/libstd/rt/rtio.rs
index bc3a483f30d..d23d327d558 100644
--- a/src/libstd/rt/rtio.rs
+++ b/src/libstd/rt/rtio.rs
@@ -269,6 +269,7 @@ pub trait RtioFileStream {
     fn fsync(&mut self) -> IoResult<()>;
     fn datasync(&mut self) -> IoResult<()>;
     fn truncate(&mut self, offset: i64) -> IoResult<()>;
+    fn fstat(&mut self) -> IoResult<FileStat>;
 }
 
 pub trait RtioProcess {