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-rw-r--r--src/doc/rust.md4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/doc/rust.md b/src/doc/rust.md
index 1e1278f08bb..afb21a19965 100644
--- a/src/doc/rust.md
+++ b/src/doc/rust.md
@@ -1471,11 +1471,13 @@ with the exception that they may not have a body
 and are instead terminated by a semicolon.
 
 ~~~~
-# use std::libc::{c_char, FILE};
+extern crate libc;
+use libc::{c_char, FILE};
 
 extern {
     fn fopen(filename: *c_char, mode: *c_char) -> *FILE;
 }
+# fn main() {}
 ~~~~
 
 Functions within external blocks may be called by Rust code,