1 files changed, 77 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/torture/pr48661.C b/gcc/testsuite/g++.dg/torture/pr48661.C
new file mode 100644
index 000000000..8de2142f7
--- /dev/null
+++ b/gcc/testsuite/g++.dg/torture/pr48661.C
@@ -0,0 +1,77 @@
+// PR middle-end/48661
+// { dg-do run }
+
+extern "C" void abort ();
+
+__attribute__((noinline))
+double
+foo (double x, double y)
+{
+  asm volatile ("" : : : "memory");
+  return x + y;
+}
+
+__attribute__((noinline, noclone))
+void
+bar (int x)
+{
+  if (x != 123)
+    abort ();
+}
+
+struct A
+{
+  double a1, a2;
+};
+
+struct B 
+{
+  virtual int m () const = 0 ;
+};
+
+struct C
+{
+  virtual ~C () {}
+};
+
+struct D : virtual public B, public C
+{ 
+  explicit D (const A &x) : d(123) { foo (x.a2, x.a1); }
+  int m () const { return d; }
+  int d;
+}; 
+
+struct E
+{
+  E () : d(0) {}
+  virtual void n (const B &x) { d = x.m (); x.m (); x.m (); }
+  int d;
+};
+
+void
+test ()
+{
+  A a;
+  a.a1 = 0;
+  a.a2 = 1;
+  E p;
+  D q (a);
+  const B &b = q;
+  bar (b.m ());
+  p.n (b);
+  bar (p.d);
+}
+
+void
+baz ()
+{
+  A a;
+  D p2 (a);
+}
+
+int
+main ()
+{
+  test ();
+  return 0;
+}