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-rw-r--r--src/libstd/sys/common/io.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libstd/sys/common/io.rs b/src/libstd/sys/common/io.rs
index 47cec4ef5c2..0483725dd83 100644
--- a/src/libstd/sys/common/io.rs
+++ b/src/libstd/sys/common/io.rs
@@ -50,7 +50,8 @@ pub unsafe fn read_to_end_uninitialized(r: &mut Read, buf: &mut Vec<u8>) -> io::
     }
 }
 
-#[cfg(all(test, not(target_os = "emscripten")))]
+#[cfg(test)]
+#[allow(dead_code)] // not used on emscripten
 pub mod test {
     use path::{Path, PathBuf};
     use env;