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+/* { dg-do run } */
+/* { dg-options "-O2" } */
+
+/* Test provided by Brian Ryner in PR 14511. The alias analyzer was
+ not handling structures containing arrays properly. In this case,
+ the static cast was introducing two assignments of the form
+
+ this_6->_vptr.IFoo = &_ZTV4IFoo[2];
+ this_4->_vptr.IFoo = &_ZTV3Bar[2];
+
+ which were not considered to alias each other because the alias
+ analyzer was not computing a proper pointer to array elements.
+ Another related bug was the type based alias analyzer not computing
+ alias relations to _ZTV4IFoo and _ZTV3Bar. Since those variables
+ are read-only, it was disregarding alias information for them.
+ So, the memory tags for the two 'this' variables were not being
+ marked as aliased with these variables. Resulting in the two
+ assignments not aliasing each other.
+
+ This was causing the optimizers to generate a call to the virtual
+ method Foo() instead of the overloaded version. */
+
+struct IFoo
+{
+ virtual void Foo() = 0;
+};
+
+struct Bar : IFoo
+{
+ void Foo() { }
+};
+
+int main(int argc, char **argv)
+{
+ Bar* b = new Bar();
+ static_cast<IFoo*>(b)->Foo();
+ return 0;
+}