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-rw-r--r--tests/ui/macros/nonterminal-matching.stderr3
1 files changed, 3 insertions, 0 deletions
diff --git a/tests/ui/macros/nonterminal-matching.stderr b/tests/ui/macros/nonterminal-matching.stderr
index 5bbd54390..c2b047022 100644
--- a/tests/ui/macros/nonterminal-matching.stderr
+++ b/tests/ui/macros/nonterminal-matching.stderr
@@ -18,6 +18,9 @@ LL | macro n(a $nt_item b) {
...
LL | complex_nonterminal!(enum E {});
| ------------------------------- in this macro invocation
+ = note: captured metavariables except for `:tt`, `:ident` and `:lifetime` cannot be compared to other tokens
+ = note: see <https://doc.rust-lang.org/nightly/reference/macros-by-example.html#forwarding-a-matched-fragment> for more information
+ = help: try using `:tt` instead in the macro definition
= note: this error originates in the macro `complex_nonterminal` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to previous error