1 files changed, 54 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/torture/pr42773.C b/gcc/testsuite/g++.dg/torture/pr42773.C
new file mode 100644
index 00000000000..478ad278aa6
--- /dev/null
+++ b/gcc/testsuite/g++.dg/torture/pr42773.C
@@ -0,0 +1,54 @@
+// { dg-do compile }
+// { dg-options "-fno-exceptions" }
+
+typedef unsigned int uint;
+struct QShared {
+    bool deref() {
+	return !--count;
+    }
+    uint count;
+};
+template <class T> class QValueListNode {
+public:
+    QValueListNode<T>* next;
+    QValueListNode<T>* prev;
+};
+template <class T> class QValueListPrivate : public QShared {
+public:
+    typedef QValueListNode<T> Node;
+    typedef QValueListNode<T>* NodePtr;
+    QValueListPrivate();
+    void derefAndDelete()     {
+	if ( deref() )      delete this;
+    }
+    ~QValueListPrivate();
+    NodePtr node;
+};
+template <class T>  QValueListPrivate<T>::QValueListPrivate() {
+    node = new Node;
+    node->next = node->prev = node;
+}
+template <class T>  QValueListPrivate<T>::~QValueListPrivate() {
+    NodePtr p = node->next;
+    while( p != node ) {
+	NodePtr x = p->next;
+	delete p;
+	p = x;
+    }
+}
+template <class T> class QValueList {
+public:
+    QValueList() {
+	sh = new QValueListPrivate<T>;
+    }
+    ~QValueList() {
+	sh->derefAndDelete();
+    }
+    QValueListPrivate<T>* sh;
+};
+class Cell {
+    QValueList<Cell*> obscuringCells() const;
+};
+QValueList<Cell*> Cell::obscuringCells() const {
+    QValueList<Cell*> empty;
+}