new test

From-SVN: r83337

gcc/testsuite/g++.dg/ext/stmtexpr2.C

+// { dg-do run }
+// { dg-options "" }
+
+extern "C" int printf (char const *, ...);
+extern "C" void abort ();
+
+static unsigned int expected[] = {
+  11, 10, 21, 110, 111, 121
+};
+static unsigned int pointer = 0;
+
+static void Check (unsigned t, unsigned i, void const *ptr, char const *name)
+{
+  printf ("%d %d %p %s\n", t, i, ptr, name);
+
+  if (pointer > sizeof(expected)/sizeof(expected[0]))
+    abort ();
+  if (t + i != expected[pointer++])
+    abort ();
+}
+
+struct A 
+{
+  int I;
+
+  A (int i) : I(i) { Check (0, I, this, __PRETTY_FUNCTION__); }
+  ~A () { Check (100, I, this, __PRETTY_FUNCTION__); }
+  A (A const &a) : I(a.I) { Check (200, I, this, __PRETTY_FUNCTION__); }
+  A &operator= (A const &a)
+  { I = a.I; Check (300, I, this, __PRETTY_FUNCTION__); return *this; }
+  void Foo () const { Check (400, I, this, __PRETTY_FUNCTION__); }
+  A operator+ (A const &a) const
+  { return A(I + a.I); }
+};
+
+int main ()
+{
+  ({ A(10) + A(11); });
+}