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-rw-r--r--src/librustc_parse/parser/item.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc_parse/parser/item.rs b/src/librustc_parse/parser/item.rs
index c53f132ff3d..f6199da3f1d 100644
--- a/src/librustc_parse/parser/item.rs
+++ b/src/librustc_parse/parser/item.rs
@@ -140,7 +140,7 @@ impl<'a> Parser<'a> {
                     self.sess.gated_spans.gate(sym::const_extern_fn, lo.to(self.token.span));
                 }
                 let ext = self.parse_extern()?;
-                self.bump(); // `fn`
+                self.expect_keyword(kw::Fn)?;
 
                 let header = FnHeader {
                     unsafety,