1 files changed, 14 insertions, 0 deletions
diff --git a/tests/ui/macros/issue-42954.rs b/tests/ui/macros/issue-42954.rs
new file mode 100644
index 00000000000..5f9b0e31da5
--- /dev/null
+++ b/tests/ui/macros/issue-42954.rs
@@ -0,0 +1,14 @@
+// run-rustfix
+
+#![allow(unused_must_use, unused_comparisons)]
+
+macro_rules! is_plainly_printable {
+    ($i: ident) => {
+        $i as u32 < 0 //~ `<` is interpreted as a start of generic arguments
+    };
+}
+
+fn main() {
+    let c = 'a';
+    is_plainly_printable!(c);
+}