gcc/testsuite/g++.dg/tm/pr45940-3.C

   1 // { dg-do compile }
   2 // { dg-options "-fgnu-tm -O0" }
   3
   4 __attribute__((transaction_safe))
   5 void* operator new (__SIZE_TYPE__);
   6
   7 __attribute__((transaction_pure))
   8 inline int atomic_exchange_and_add( int * pw, int dv )
   9 {
  10     int r;
  11     __asm__ ("" : "=r"(r));
  12     return r;
  13 }
  14
  15 class sp_counted_base
  16 {
  17 protected:
  18     int use_count_;        // #shared
  19 public:
  20     __attribute__((transaction_safe))
  21     virtual void dispose() = 0; // nothrow
  22
  23     __attribute__((transaction_safe))
  24     void release() // nothrow
  25     {
  26         if( atomic_exchange_and_add( &use_count_, -1 ) == 1 )
  27         {
  28             dispose();
  29         }
  30     }
  31 };
  32
  33 class sp_counted_base_x86 : public sp_counted_base
  34 {
  35 public:
  36   void dispose()
  37   {
  38     release();
  39   }
  40 };
  41
  42 class shared_count
  43 {
  44 private:
  45     sp_counted_base * pi_;
  46 public:
  47     int j;
  48     __attribute__((transaction_safe))
  49     shared_count(): pi_(new sp_counted_base_x86()), j(0)
  50     {
  51     }
  52     __attribute__((transaction_safe))
  53     ~shared_count() // nothrow
  54     {
  55         if( pi_ != 0 ) pi_->release();
  56     }
  57 };
  58
  59 volatile int i = 1;
  60 shared_count * c;
  61 int main()
  62 {
  63   if ( i == 0) {
  64     __transaction_atomic {
  65      shared_count sc;
  66     }
  67   }
  68   return 0;
  69 }