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-rw-r--r--src/libsyntax/diagnostic.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libsyntax/diagnostic.rs b/src/libsyntax/diagnostic.rs
index e3514b6f3f3..b11c99d1a70 100644
--- a/src/libsyntax/diagnostic.rs
+++ b/src/libsyntax/diagnostic.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+extern crate libc;
+
 use codemap::{Pos, Span};
 use codemap;