2 files changed, 9 insertions, 1 deletions
diff --git a/src/test/ui/allocator-submodule.rs b/src/test/ui/allocator-submodule.rs
index b73068244b1..40e5940c558 100644
--- a/src/test/ui/allocator-submodule.rs
+++ b/src/test/ui/allocator-submodule.rs
@@ -31,7 +31,7 @@ mod submod {
     use super::MyAlloc;
 
     #[global_allocator]
-    static MY_HEAP: MyAlloc = MyAlloc;
+    static MY_HEAP: MyAlloc = MyAlloc; //~ ERROR global_allocator
 }
 
 fn main() {}
diff --git a/src/test/ui/allocator-submodule.stderr b/src/test/ui/allocator-submodule.stderr
new file mode 100644
index 00000000000..6e7727f8889
--- /dev/null
+++ b/src/test/ui/allocator-submodule.stderr
@@ -0,0 +1,8 @@
+error: `global_allocator` cannot be used in submodules
+  --> $DIR/allocator-submodule.rs:34:5
+   |
+LL |     static MY_HEAP: MyAlloc = MyAlloc; //~ ERROR global_allocator
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+