--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/torture/pr36745.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,122 @@
+/* PR target/36745 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fPIC" } */
+/* { dg-require-effective-target fpic } */
+
+typedef __SIZE_TYPE__ size_t;
+class QBasicAtomicInt
+{
+public:
+  int _q_value;
+  inline bool operator== (int value) const
+  {
+  }
+  bool ref ();
+  bool deref ();
+};
+inline bool
+QBasicAtomicInt::ref ()
+{
+  __asm__ ("": "=m" (_q_value): :);
+  return true;
+}
+
+namespace std
+{
+  using::size_t;
+}
+extern "C++"
+{
+  inline void *operator new (std::size_t, void *__p)
+  {
+    return __p;
+  }
+}
+struct QMapData
+{
+  QBasicAtomicInt ref;
+  static QMapData shared_null;
+};
+template < class Key, class T > class QMap
+{
+  QMapData *d;
+public: inline QMap ():d (&QMapData::shared_null)
+  {
+  }
+  inline ~ QMap ()
+  {
+    if (!d->ref.deref ())
+      freeData (d);
+  }
+  void freeData (QMapData * d);
+};
+struct QVectorData
+{
+  QBasicAtomicInt ref;
+  static QVectorData shared_null;
+};
+template < typename T > struct QVectorTypedData
+{
+  QBasicAtomicInt ref;
+};
+template < typename T > class QVector
+{
+  union
+  {
+    QVectorData *p;
+    QVectorTypedData < T > *d;
+  };
+public: inline QVector ():p (&QVectorData::shared_null)
+  {
+    d->ref.ref ();
+  }
+  inline void detach ()
+  {
+    if (d->ref == 1)
+      detach_helper ();
+  }
+  inline T *data ()
+  {
+    detach ();
+  }
+  T & operator[](int i);
+  void detach_helper ();
+  void realloc ();
+};
+template < typename T > void QVector < T >::detach_helper ()
+{
+  realloc ();
+}
+
+template < typename T > inline T & QVector < T >::operator[](int i)
+{
+  return data ()[i];
+}
+template < typename T > void QVector < T >::realloc ()
+{
+  T *j, *i;
+  i->~T ();
+  while (j-- == i)
+    new (j) T;
+}
+
+void
+mergeInto (QVector < int >*a)
+{
+};
+struct QRegExpAutomatonState
+{
+  QVector < int >outs;
+  QMap < int, int >reenter;
+  QMap < int, int >anchors;
+};
+class QRegExpEngine
+{
+  void addCatTransitions ();
+  QVector < QRegExpAutomatonState > s;
+};
+void
+QRegExpEngine::addCatTransitions ()
+{
+  mergeInto (&s[2].outs);
+}