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-rw-r--r--src/libsyntax/ext/format.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libsyntax/ext/format.rs b/src/libsyntax/ext/format.rs
index f21239af6af..c05fc8ce6d9 100644
--- a/src/libsyntax/ext/format.rs
+++ b/src/libsyntax/ext/format.rs
@@ -895,8 +895,8 @@ pub fn expand_preparsed_format_args(ecx: &mut ExtCtxt, sp: Span,
     match parser.errors.shift() {
         Some(error) => {
             cx.ecx.span_err(efmt.span,
-                            format_strbuf!("invalid format string: {}",
-                                           error).as_slice());
+                            format!("invalid format string: {}",
+                                    error).as_slice());
             return DummyResult::raw_expr(sp);
         }
         None => {}