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-rw-r--r--src/libsyntax_ext/log_syntax.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsyntax_ext/log_syntax.rs b/src/libsyntax_ext/log_syntax.rs
index a143186b945..658ce98d268 100644
--- a/src/libsyntax_ext/log_syntax.rs
+++ b/src/libsyntax_ext/log_syntax.rs
@@ -4,7 +4,7 @@ use syntax::print;
 use syntax::tokenstream;
 use syntax_pos;
 
-pub fn expand_syntax_ext<'cx>(cx: &'cx mut base::ExtCtxt,
+pub fn expand_syntax_ext<'cx>(cx: &'cx mut base::ExtCtxt<'_>,
                               sp: syntax_pos::Span,
                               tts: &[tokenstream::TokenTree])
                               -> Box<dyn base::MacResult + 'cx> {