1 files changed, 86 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.old-deja/g++.mike/p8018.C b/gcc/testsuite/g++.old-deja/g++.mike/p8018.C
new file mode 100644
index 000000000..f085b6e82
--- /dev/null
+++ b/gcc/testsuite/g++.old-deja/g++.mike/p8018.C
@@ -0,0 +1,86 @@
+// { dg-do run  }
+// prms-id: 8018
+
+class RefCount {
+private:
+  int nref;
+
+public:
+  RefCount() : nref(0) {}
+  ~RefCount() {}
+
+  int nrefs() const { return nref; }
+  int reference() {
+    nref++;
+    return nref;
+  }
+  int unreference() {
+    nref--;
+    return nref;
+  }
+};
+
+class A : public RefCount {
+public:
+  A() {}
+  ~A() {}
+};
+
+class RefA {
+private:
+  A *p;
+
+  void clear() {
+    if (p) {
+      p->unreference();
+      if (!p->nrefs())
+	delete p;
+    }
+  }
+
+public:
+  RefA(A* a) : p(a) { if (p) p->reference(); }
+  RefA(const RefA& a) : p(a.p) { if (p) p->reference(); }
+  ~RefA() { clear(); }
+
+  A* operator->() { return p; }
+
+  RefA& operator=(const RefA& a) {
+    clear();
+    p=a.p;
+    if (p)
+      p->reference();
+    return *this;
+  }
+
+  RefA& operator=(A* a) {
+    clear();
+    p=a;
+    if (p)
+      p->reference();
+    return *this;
+  }
+};
+
+class AccRefA {
+private:
+  RefA a;
+
+public:
+  AccRefA(A* ap) : a(ap) {}
+  AccRefA(const RefA& ar) : a(ar) {}
+  ~AccRefA() {}
+
+  operator RefA&() { return a; }
+  RefA& result() { return a; }
+};
+
+int
+main() {
+  RefA a1 = new A;
+  AccRefA aa1(a1);
+  RefA a3 = aa1;
+
+  if (a1->nrefs() != 3)
+    return 1;
+}