1 files changed, 91 insertions, 0 deletions
diff --git a/tests/codegen-units/item-collection/generic-drop-glue.rs b/tests/codegen-units/item-collection/generic-drop-glue.rs
new file mode 100644
index 00000000000..6df4ff7e58b
--- /dev/null
+++ b/tests/codegen-units/item-collection/generic-drop-glue.rs
@@ -0,0 +1,91 @@
+//
+// compile-flags:-Zprint-mono-items=eager
+// compile-flags:-Zinline-in-all-cgus
+
+#![deny(dead_code)]
+#![feature(start)]
+
+struct StructWithDrop<T1, T2> {
+    x: T1,
+    y: T2,
+}
+
+impl<T1, T2> Drop for StructWithDrop<T1, T2> {
+    fn drop(&mut self) {}
+}
+
+struct StructNoDrop<T1, T2> {
+    x: T1,
+    y: T2,
+}
+
+enum EnumWithDrop<T1, T2> {
+    A(T1),
+    B(T2)
+}
+
+impl<T1, T2> Drop for EnumWithDrop<T1, T2> {
+    fn drop(&mut self) {}
+}
+
+enum EnumNoDrop<T1, T2> {
+    A(T1),
+    B(T2)
+}
+
+
+struct NonGenericNoDrop(#[allow(unused_tuple_struct_fields)] i32);
+
+struct NonGenericWithDrop(#[allow(unused_tuple_struct_fields)] i32);
+//~ MONO_ITEM fn std::ptr::drop_in_place::<NonGenericWithDrop> - shim(Some(NonGenericWithDrop)) @@ generic_drop_glue-cgu.0[Internal]
+
+impl Drop for NonGenericWithDrop {
+    //~ MONO_ITEM fn <NonGenericWithDrop as std::ops::Drop>::drop
+    fn drop(&mut self) {}
+}
+
+//~ MONO_ITEM fn start
+#[start]
+fn start(_: isize, _: *const *const u8) -> isize {
+    //~ MONO_ITEM fn std::ptr::drop_in_place::<StructWithDrop<i8, char>> - shim(Some(StructWithDrop<i8, char>)) @@ generic_drop_glue-cgu.0[Internal]
+    //~ MONO_ITEM fn <StructWithDrop<i8, char> as std::ops::Drop>::drop
+    let _ = StructWithDrop { x: 0i8, y: 'a' }.x;
+
+    //~ MONO_ITEM fn std::ptr::drop_in_place::<StructWithDrop<&str, NonGenericNoDrop>> - shim(Some(StructWithDrop<&str, NonGenericNoDrop>)) @@ generic_drop_glue-cgu.0[Internal]
+    //~ MONO_ITEM fn <StructWithDrop<&str, NonGenericNoDrop> as std::ops::Drop>::drop
+    let _ = StructWithDrop { x: "&str", y: NonGenericNoDrop(0) }.y;
+
+    // Should produce no drop glue
+    let _ = StructNoDrop { x: 'a', y: 0u32 }.x;
+
+    // This is supposed to generate drop-glue because it contains a field that
+    // needs to be dropped.
+    //~ MONO_ITEM fn std::ptr::drop_in_place::<StructNoDrop<NonGenericWithDrop, f64>> - shim(Some(StructNoDrop<NonGenericWithDrop, f64>)) @@ generic_drop_glue-cgu.0[Internal]
+    let _ = StructNoDrop { x: NonGenericWithDrop(0), y: 0f64 }.y;
+
+    //~ MONO_ITEM fn std::ptr::drop_in_place::<EnumWithDrop<i32, i64>> - shim(Some(EnumWithDrop<i32, i64>)) @@ generic_drop_glue-cgu.0[Internal]
+    //~ MONO_ITEM fn <EnumWithDrop<i32, i64> as std::ops::Drop>::drop
+    let _ = match EnumWithDrop::A::<i32, i64>(0) {
+        EnumWithDrop::A(x) => x,
+        EnumWithDrop::B(x) => x as i32
+    };
+
+    //~ MONO_ITEM fn std::ptr::drop_in_place::<EnumWithDrop<f64, f32>> - shim(Some(EnumWithDrop<f64, f32>)) @@ generic_drop_glue-cgu.0[Internal]
+    //~ MONO_ITEM fn <EnumWithDrop<f64, f32> as std::ops::Drop>::drop
+    let _ = match EnumWithDrop::B::<f64, f32>(1.0) {
+        EnumWithDrop::A(x) => x,
+        EnumWithDrop::B(x) => x as f64
+    };
+
+    let _ = match EnumNoDrop::A::<i32, i64>(0) {
+        EnumNoDrop::A(x) => x,
+        EnumNoDrop::B(x) => x as i32
+    };
+
+    let _ = match EnumNoDrop::B::<f64, f32>(1.0) {
+        EnumNoDrop::A(x) => x,
+        EnumNoDrop::B(x) => x as f64
+    };
+
+    0
+}