Add the clang library to the repo (with some of my changes, too).

1 files changed, 74 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/dynamic-cast.cpp b/clang/test/SemaCXX/dynamic-cast.cpp
new file mode 100644
index 0000000..b73e8c5
--- /dev/null
+++ b/clang/test/SemaCXX/dynamic-cast.cpp
@@ -0,0 +1,74 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+struct A {};
+struct B : A {};
+struct C : B {};
+
+struct D : private A {};
+struct E : A {};
+struct F : B, E {};
+
+struct Incomplete; // expected-note 2 {{forward declaration of 'Incomplete'}}
+
+struct Poly
+{
+  virtual void f();
+};
+
+struct PolyDerived : Poly
+{
+};
+
+void basic_bad()
+{
+  // ptr -> nonptr
+  (void)dynamic_cast<A>((A*)0); // expected-error {{'A' is not a reference or pointer}}
+  // nonptr -> ptr
+  (void)dynamic_cast<A*>(0); // expected-error {{'int' is not a pointer}}
+  // ptr -> noncls
+  (void)dynamic_cast<int*>((A*)0); // expected-error {{'int' is not a class}}
+  // noncls -> ptr
+  (void)dynamic_cast<A*>((int*)0); // expected-error {{'int' is not a class}}
+  // ref -> noncls
+  (void)dynamic_cast<int&>(*((A*)0)); // expected-error {{'int' is not a class}}
+  // noncls -> ref
+  (void)dynamic_cast<A&>(*((int*)0)); // expected-error {{'int' is not a class}}
+  // ptr -> incomplete
+  (void)dynamic_cast<Incomplete*>((A*)0); // expected-error {{'Incomplete' is an incomplete type}}
+  // incomplete -> ptr
+  (void)dynamic_cast<A*>((Incomplete*)0); // expected-error {{'Incomplete' is an incomplete type}}
+}
+
+void same()
+{
+  (void)dynamic_cast<A*>((A*)0);
+  (void)dynamic_cast<A&>(*((A*)0));
+}
+
+void up()
+{
+  (void)dynamic_cast<A*>((B*)0);
+  (void)dynamic_cast<A&>(*((B*)0));
+  (void)dynamic_cast<A*>((C*)0);
+  (void)dynamic_cast<A&>(*((C*)0));
+
+  // Inaccessible
+  //(void)dynamic_cast<A*>((D*)0);
+  //(void)dynamic_cast<A&>(*((D*)0));
+
+  // Ambiguous
+  (void)dynamic_cast<A*>((F*)0); // expected-error {{ambiguous conversion from derived class 'F' to base class 'A':\n    struct F -> struct B -> struct A\n    struct F -> struct E -> struct A}}
+  (void)dynamic_cast<A&>(*((F*)0)); // expected-error {{ambiguous conversion from derived class 'F' to base class 'A':\n    struct F -> struct B -> struct A\n    struct F -> struct E -> struct A}}
+}
+
+void poly()
+{
+  (void)dynamic_cast<A*>((Poly*)0);
+  (void)dynamic_cast<A&>(*((Poly*)0));
+  (void)dynamic_cast<A*>((PolyDerived*)0);
+  (void)dynamic_cast<A&>(*((PolyDerived*)0));
+
+  // Not polymorphic source
+  (void)dynamic_cast<Poly*>((A*)0); // expected-error {{'A' is not polymorphic}}
+  (void)dynamic_cast<PolyDerived&>(*((A*)0)); // expected-error {{'A' is not polymorphic}}
+}