diff --git a/gcc/testsuite/rust/compile/unsafe_module.rs b/gcc/testsuite/rust/compile/unsafe_module.rs
new file mode 100644
index 000000000000..74bc170be5b0
--- /dev/null
+++ b/gcc/testsuite/rust/compile/unsafe_module.rs
@@ -0,0 +1,2 @@
+unsafe mod toto {}
+// { dg-error "module cannot be declared unsafe" "" { target *-*-* } .-1 }