It is common for vtables to contain pointers to functions that have either incomplete return types or incomplete argument types.

Handle this by returning the llvm::OpaqueType for those cases, which CodeGenModule::GetOrCreateLLVMFunction knows about, and treats as being an "incomplete function".


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89736 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 30 insertions, 0 deletions

diff --git a/test/CodeGenCXX/virtual-functions-incomplete-types.cpp b/test/CodeGenCXX/virtual-functions-incomplete-types.cpp
new file mode 100644
index 0000000000..1e1e96286e
--- /dev/null
+++ b/test/CodeGenCXX/virtual-functions-incomplete-types.cpp
@@ -0,0 +1,30 @@
+// RUN: clang-cc %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
+
+struct A;
+
+struct B {
+  virtual void f();
+  virtual A g();
+};
+
+void B::f() { }
+
+// CHECK: declare void @_ZN1B1gEv()
+
+struct C;
+
+struct D {
+  virtual void f();
+  virtual C g();
+};
+
+void D::f() { }
+
+struct C {
+  int a;
+};
+
+// CHECK: define i64 @_ZN1D1gEv(%struct.B* %this)
+C D::g() {
+  return C();
+}