1 files changed, 38 insertions, 0 deletions
diff --git a/test/CodeGenObjCXX/arc-attrs-abi.mm b/test/CodeGenObjCXX/arc-attrs-abi.mm
new file mode 100644
index 000000000000..14bdf8be30e5
--- /dev/null
+++ b/test/CodeGenObjCXX/arc-attrs-abi.mm
@@ -0,0 +1,38 @@
+// RUN: %clang_cc1 -triple x86_64-apple -emit-llvm -fobjc-arc -o - %s -std=c++11 | FileCheck %s --check-prefix=ITANIUM
+// RUN: %clang_cc1 -triple x86_64-windows -emit-llvm -fobjc-arc -o - %s -std=c++11
+//
+// Test cases where we weren't properly adding extended parameter info, which
+// caused assertions to fire. Hence, minimal CHECKs.
+
+struct VirtualBase {
+  VirtualBase(__attribute__((ns_consumed)) id x,
+              void * __attribute__((pass_object_size(0))));
+};
+struct WithVirtualBase : virtual VirtualBase {
+  WithVirtualBase(__attribute__((ns_consumed)) id x);
+};
+
+WithVirtualBase::WithVirtualBase(__attribute__((ns_consumed)) id x)
+    : VirtualBase(x, (void *)0) {}
+
+
+struct VirtualBase2 {
+  VirtualBase2(__attribute__((ns_consumed)) id x, void *y);
+};
+
+// In this case, we don't actually end up passing the `id` param from
+// WithVirtualBaseLast's ctor to WithVirtualBaseMid's. So, we shouldn't emit
+// ext param info for `id` to `Mid`. Itanium-only check since MSABI seems to
+// emit the construction code inline.
+struct WithVirtualBaseMid : virtual VirtualBase2 {
+  // Ensure we only pass in `this` and a vtable. Otherwise this test is useless.
+  // ITANIUM: define {{.*}} void @_ZN18WithVirtualBaseMidCI212VirtualBase2EP11objc_objectPv({{[^,]*}}, {{[^,]*}})
+  using VirtualBase2::VirtualBase2;
+};
+struct WithVirtualBaseLast : WithVirtualBaseMid {
+  using WithVirtualBaseMid::WithVirtualBaseMid;
+};
+
+void callLast(__attribute__((ns_consumed)) id x) {
+  WithVirtualBaseLast{x, (void*)0};
+}