gcc/testsuite/g++.old-deja/g++.jason/thunk3.C

   1 // { dg-do run { xfail rs6000-*-* powerpc-*-eabi m68k-*-coff mn10300-*-* v850-*-* sh-*-* sh64-*-* h8*-*-* xtensa-*-* m32r*-*-* } }
   2 // Test that variadic function calls using thunks work right.
   3 // Note that this will break on any target that uses the generic thunk
   4 //  support, because it doesn't support variadic functions.
   5
   6
   7 #include <stdarg.h>
   8
   9 struct A {
  10   void* p;
  11   A (void* q): p (q) { }
  12   A (const A& a): p (a.p) { }
  13 };
  14
  15 class CBase {
  16 public:
  17    virtual void BaseFunc();
  18 };
  19
  20 class MMixin {
  21 public:
  22    virtual A MixinFunc(int arg, ...) = 0;
  23 };
  24
  25 class CExample : public CBase, public MMixin {
  26 public:
  27    A MixinFunc(int arg, ...);
  28 };
  29
  30 void CBase::BaseFunc()
  31 {
  32 }
  33
  34 A CExample::MixinFunc(int arg, ...)
  35 {
  36   va_list ap;
  37   va_start (ap, arg);
  38
  39   if (arg != 1 || va_arg (ap, int) != 2 || va_arg (ap, int) != 3
  40       || va_arg (ap, int) != 4 || va_arg (ap, int) != 5
  41       || va_arg (ap, int) != 6 || va_arg (ap, int) != 7
  42       || va_arg (ap, int) != 8 || va_arg (ap, int) != 9)
  43     return 0;
  44   return this;
  45 }
  46
  47 void* test(MMixin& anExample)
  48 {
  49   return anExample.MixinFunc(1,2,3,4,5,6,7,8,9).p;
  50 }
  51
  52 int main ()
  53 {
  54   CExample c;
  55
  56   if (test(c) != &c)
  57     return 1;
  58 }