Merge branch 'master' of ssh://bitbucket.org/czan/honours

1 files changed, 47 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/derived-to-base.cpp b/clang/test/CodeGenCXX/derived-to-base.cpp
new file mode 100644
index 0000000..76b79fc
--- /dev/null
+++ b/clang/test/CodeGenCXX/derived-to-base.cpp
@@ -0,0 +1,47 @@
+// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
+struct A { 
+  void f(); 
+  
+  int a;
+};
+
+struct B : A { 
+  double b;
+};
+
+void f() {
+  B b;
+  
+  b.f();
+}
+
+// CHECK: define %struct.B* @_Z1fP1A(%struct.A* %a) nounwind
+B *f(A *a) {
+  // CHECK-NOT: br label
+  // CHECK: ret %struct.B*
+  return static_cast<B*>(a);
+}
+
+// PR5965
+namespace PR5965 {
+
+// CHECK: define %struct.A* @_ZN6PR59651fEP1B(%struct.B* %b) nounwind
+A *f(B* b) {
+  // CHECK-NOT: br label
+  // CHECK: ret %struct.A*
+  return b;
+}
+
+}
+
+// Don't crash on a derived-to-base conversion of an r-value
+// aggregate.
+namespace test3 {
+  struct A {};
+  struct B : A {};
+
+  void foo(A a);
+  void test() {
+    foo(B());
+  }
+}