1 files changed, 8 insertions, 0 deletions
diff --git a/tests/ui/macros/issue-104769-concat_bytes-invalid-literal.rs b/tests/ui/macros/issue-104769-concat_bytes-invalid-literal.rs
new file mode 100644
index 000000000..24150376e
--- /dev/null
+++ b/tests/ui/macros/issue-104769-concat_bytes-invalid-literal.rs
@@ -0,0 +1,8 @@
+#![feature(concat_bytes)]
+
+fn main() {
+    concat_bytes!(7Y);
+    //~^ ERROR invalid suffix `Y` for number literal
+    concat_bytes!(888888888888888888888888888888888888888);
+    //~^ ERROR integer literal is too large
+}