From eb3da09333870e94b122d863402d993fb7ecd78f Mon Sep 17 00:00:00 2001 From: Esteban Küber Date: Tue, 16 Jan 2018 18:11:35 -0800 Subject: Add secondary span pointing at the statement (error span) --- src/libsyntax_ext/format.rs | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'src/libsyntax_ext') diff --git a/src/libsyntax_ext/format.rs b/src/libsyntax_ext/format.rs index 29280d203c7..a7822414c69 100644 --- a/src/libsyntax_ext/format.rs +++ b/src/libsyntax_ext/format.rs @@ -814,8 +814,12 @@ pub fn expand_preparsed_format_args(ecx: &mut ExtCtxt, let (sp, msg) = errs.into_iter().next().unwrap(); cx.ecx.struct_span_err(sp, msg) } else { - cx.ecx.struct_span_err(errs.iter().map(|&(sp, _)| sp).collect::>(), - "multiple unused formatting arguments") + let mut diag = cx.ecx.struct_span_err( + errs.iter().map(|&(sp, _)| sp).collect::>(), + "multiple unused formatting arguments" + ); + diag.span_label(cx.fmtsp, "multiple unused arguments in this statement"); + diag } }; -- cgit 1.4.1-3-g733a5