clang/test/CodeGenCXX/thunk-linkonce-odr.cpp

   1 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -emit-llvm -o - | FileCheck %s
   2
   3 struct A {
   4   virtual int f() { return 1; }
   5 };
   6
   7 struct B {
   8   virtual int f() { return 2; }
   9 };
  10
  11 struct C : A, B {
  12   virtual int f() { return 3; }
  13 };
  14
  15 struct D : C {
  16   virtual int f() { return 4; }
  17 };
  18
  19 static int f(D* d) {
  20   B* b = d;
  21   return b->f();
  22 };
  23
  24 int g() {
  25   D d;
  26   return f(&d);
  27 }
  28
  29 // Thunks should be marked as "linkonce ODR" not "weak".
  30 //
  31 // CHECK: define linkonce_odr noundef i32 @_ZThn{{[48]}}_N1D1fEv
  32 // CHECK: define linkonce_odr noundef i32 @_ZThn{{[48]}}_N1C1fEv