clang/test/CodeGenCXX/RelativeVTablesABI/thunk-mangling.cpp

   1 // Check that virtual thunks are unaffected by the relative ABI.
   2 // The offset of thunks is mangled into the symbol name, which could result in
   3 // linking errors for binaries that want to look for symbols in SOs made with
   4 // this ABI.
   5 // Running that linked binary still won't work since we're using conflicting
   6 // ABIs, but we should still be able to link.
   7
   8 // RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O1 -S -o - -emit-llvm | FileCheck %s
   9
  10 // This would be normally n24 (3 ptr widths) but is 12 since the vtable is
  11 // entierely made of i32s now.
  12 // CHECK: _ZTv0_n12_N7Derived1fEi
  13
  14 class Base {
  15 public:
  16   virtual int f(int x);
  17
  18 private:
  19   long x;
  20 };
  21
  22 class Derived : public virtual Base {
  23 public:
  24   virtual int f(int x);
  25
  26 private:
  27   long y;
  28 };
  29
  30 int Base::f(int x) { return x + 1; }
  31 int Derived::f(int x) { return x + 2; }