clang/test/CodeGenCXX/microsoft-abi-vtables-multiple-nonvirtual-inheritance-pure-virtual.cpp

   1 // RUN: %clang_cc1 %s -fno-rtti -triple=i386-pc-win32 -emit-llvm -o %t.ll -fdump-vtable-layouts >%t
   2 // RUN: FileCheck %s < %t
   3 // RUN: FileCheck --check-prefix=MANGLING %s < %t.ll
   4
   5 struct A {
   6   virtual void f();
   7 };
   8
   9 struct B {
  10   virtual void g() = 0;
  11   virtual void h();
  12 };
  13
  14 struct C : A, B {
  15   // CHECK-LABEL: VFTable for 'A' in 'C' (1 entry)
  16   // CHECK-NEXT:   0 | void A::f()
  17
  18   // CHECK-LABEL: VFTable for 'B' in 'C' (2 entries)
  19   // CHECK-NEXT:   0 | void C::g()
  20   // CHECK-NEXT:   1 | void B::h()
  21
  22   // CHECK-LABEL: VFTable indices for 'C' (1 entry).
  23   // CHECK-NEXT:   via vfptr at offset 4
  24   // CHECK-NEXT:   0 | void C::g()
  25
  26   // MANGLING-DAG: @"??_7C@@6BA@@@"
  27   // MANGLING-DAG: @"??_7C@@6BB@@@"
  28
  29   // Overrides only the right child's method (B::g),
  30   // needs this adjustment but not thunks.
  31   virtual void g();
  32 };
  33
  34 C c;
  35 void build_vftable(C *obj) { obj->g(); }