--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/CodeGen/push-hidden-visibility-subclass.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -triple x86_64-linux-unknown -emit-llvm %s -o - | FileCheck %s
+
+#pragma GCC visibility push(hidden)
+
+struct Base {
+  virtual ~Base() = default;
+  virtual void* Alloc() = 0;
+};
+
+class Child : public Base {
+public:
+  Child() = default;
+  void* Alloc();
+};
+
+void test() {
+  Child x;
+}
+
+// CHECK: @_ZTV5Child = external hidden unnamed_addr constant