ld/testsuite/ld-selective/3.cc

   1 struct A
   2 {
   3   virtual void foo();
   4   virtual void bar();
   5 };
   6
   7 void A::foo() { }                       // keep
   8 void A::bar() { }                       // lose
   9
  10 struct B : public A
  11 {
  12   virtual void foo();
  13 };
  14
  15 void B::foo() { }                       // keep
  16
  17 void _start() __asm__("_start"); // keep
  18 void start() __asm__("start"); // some toolchains use this name.
  19
  20 A a;                                    // keep
  21 B b;
  22 A *getme() { return &a; }               // keep
  23
  24 void _start()
  25 {
  26   getme()->foo();
  27 #ifdef __GNUC__
  28 #if (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
  29 // gcc-2.95.2 gets this test wrong, and loses B::foo().
  30 // Cheat.  After all, we aren't trying to test the compiler here.
  31   b.foo();
  32 #endif
  33 #endif
  34 }
  35
  36 void start ()
  37 {
  38   _start ();
  39 }
  40
  41 // In addition, keep A's virtual table.
  42
  43 // We'll wind up keeping `b' and thus B's virtual table because
  44 // `a' and `b' are both referenced from the constructor function.
  45
  46 extern "C" void __main() { }