1 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr17400.C b/gcc/testsuite/g++.dg/tree-ssa/pr17400.C
new file mode 100644
index 000000000..a6619a84f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/tree-ssa/pr17400.C
@@ -0,0 +1,53 @@
+// Test PR 17400.  Test case provided by Serge Belyshev.  
+
+/* { dg-do compile } */
+/* { dg-options "-O1" } */
+
+
+void inc (int &);
+bool dec_test (int &);
+
+struct A
+{
+  int c;
+  
+  friend void AddRef (A * p)
+  {
+    inc (p->c);
+  }
+  
+  friend void Release (A * p)
+  {
+    if(dec_test (p->c))
+      delete p;
+  }
+};
+
+struct B
+{
+  B (A *p) : obj(p)
+  {
+    AddRef (obj);
+  }
+  
+  ~B()
+  {
+    Release (obj);
+  }
+  
+  void swap (B &rhs)
+  {
+    A * tmp = obj;
+    obj = rhs.obj;
+    rhs.obj = tmp;
+  }
+  
+  A *obj;
+};
+
+void bar (A *p1, A* p2)
+{
+    B px (p1);
+    B px2 (p2);
+    px.swap (px2);
+}