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-rw-r--r--tests/rustdoc/macro-ice-16019.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/tests/rustdoc/macro-ice-16019.rs b/tests/rustdoc/macro-ice-16019.rs
index 239d92378d9..d0f82e0a314 100644
--- a/tests/rustdoc/macro-ice-16019.rs
+++ b/tests/rustdoc/macro-ice-16019.rs
@@ -1,3 +1,5 @@
+// https://github.com/rust-lang/rust/issues/16019
+
 macro_rules! define_struct {
     ($rounds:expr) => (
         struct Struct {