--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/wrappers/cp-stdlib.C	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,117 @@
+/* At one time this triggered ICEs with location wrapper nodes,
+   apparently requiring error-recovery (hence the various syntax
+   errors in this file.  */
+
+// { dg-excess-errors "expected to be full of errors, but not an ICE" }
+
+namespace std
+{
+  inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+}
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+  template<typename _Tp>
+    class new_allocator
+    {
+      typedef _Tp value_type;
+    };
+}
+namespace std
+{
+  template<typename _Tp>
+    using __allocator_base = __gnu_cxx::new_allocator<_Tp>;
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+    {
+    };
+  template<typename _Tp>
+    class allocator : public __allocator_base<_Tp>
+    {
+    };
+  template<typename _Alloc>
+    struct allocator_traits : __allocator_traits_base
+    {
+    };
+  template<typename _Tp>
+    struct allocator_traits<allocator<_Tp>>
+    {
+      using allocator_type = allocator<_Tp>;
+      template<typename _Up>
+ using rebind_alloc = allocator<_Up>;
+      allocate(allocator_type& __a, size_type __n)
+    };
+}
+namespace __gnu_cxx __attribute__ ((__visibility__ ("default")))
+{
+template<typename _Alloc, typename = typename _Alloc::value_type>
+  struct __alloc_traits
+  : std::allocator_traits<_Alloc>
+  {
+    typedef std::allocator_traits<_Alloc> _Base_type;
+    template<typename _Tp>
+      struct rebind
+      { typedef typename _Base_type::template rebind_alloc<_Tp> other; };
+  };
+{
+    {
+ }
+ }
+    }
+    {
+ {
+    }
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+    struct char_traits;
+namespace __cxx11 {
+  template<typename _CharT, typename _Traits = char_traits<_CharT>,
+           typename _Alloc = allocator<_CharT> >
+    class basic_string;
+    }
+}
+namespace std __attribute__ ((__visibility__ ("default")))
+{
+namespace __cxx11 {
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    class basic_string
+    {
+      typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template
+ rebind<_CharT>::other _Char_alloc_type;
+      typedef __gnu_cxx::__alloc_traits<_Char_alloc_type> _Alloc_traits;
+    public:
+      {
+   {
+   }
+      }
+      operator=(const basic_string& __str)
+      {
+   {
+       {
+    {
+      const auto __len = __str.size();
+      auto __alloc = __str._M_get_allocator();
+      auto __ptr = _Alloc_traits::allocate(__alloc, __len + 1);
+    }
+       }
+   }
+      }
+      {
+      }
+      size() const noexcept
+     }
+namespace filesystem
+{
+  class path
+  {
+    typedef char value_type;
+    typedef std::basic_string<value_type> string_type;
+      {
+    }
+    string_type _M_pathname;
+  };
+  class directory_entry
+  {
+    void assign(const filesystem::path& __p) { _M_path = __p; }
+    filesystem::path _M_path;