Mangle the vbptr offset into pointers to member functions

This can actually be non-zero if you override a function from a virtual
base and you have forced the most_general pointer to member
representation.

llvm-svn: 205727

1 files changed, 26 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/mangle-ms-templates-memptrs-2.cpp b/clang/test/CodeGenCXX/mangle-ms-templates-memptrs-2.cpp
new file mode 100644
index 00000000000..993199acfdb
--- /dev/null
+++ b/clang/test/CodeGenCXX/mangle-ms-templates-memptrs-2.cpp
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -Wno-microsoft -fms-extensions -fno-rtti -std=c++11 -emit-llvm %s -o - -triple=i386-pc-win32 | FileCheck %s
+
+#pragma pointers_to_members(full_generality, virtual_inheritance)
+
+struct S {
+  int a, b;
+  void f();
+  virtual void g();
+};
+
+struct GeneralBase {
+  virtual void h();
+};
+struct MostGeneral : S, virtual GeneralBase {
+  virtual void h();
+};
+template <void (MostGeneral::*MP)()>
+struct ClassTemplate {
+  ClassTemplate() {}
+};
+
+template struct ClassTemplate<&MostGeneral::h>;
+
+// Test that we mangle in the vbptr offset, which is 12 here.
+//
+// CHECK: define weak_odr x86_thiscallcc %struct.ClassTemplate* @"\01??0?$ClassTemplate@$J??_9MostGeneral@@$BA@AEA@M@3@@QAE@XZ"