diff --git a/gcc/testsuite/rust/compile/not_a_float_literal_tuple_index.rs b/gcc/testsuite/rust/compile/not_a_float_literal_tuple_index.rs
new file mode 100644
index 000000000000..b67d0be3ff02
--- /dev/null
+++ b/gcc/testsuite/rust/compile/not_a_float_literal_tuple_index.rs
@@ -0,0 +1,3 @@
+fn main() {
+    (1, (2, 3)).1.1;
+}