1  /* { dg-do compile } */
       2  /* { dg-options "-fgnu-tm -O" } */
       3  
       4  extern void usleep (int) __attribute__((transaction_pure));
       5  extern int rand(void) __attribute__((pure, transaction_pure));
       6  extern int printf (const char *, ...);
       7  extern void *malloc (__SIZE_TYPE__) __attribute__((malloc));
       8  extern void xyzzy (void * (*)(void *));
       9  
      10  typedef struct
      11  {
      12    int id;
      13  } parm;
      14  
      15  int gvar;
      16  
      17  void *hello(void *arg)
      18  {
      19    parm *p=(parm *)arg;
      20    int tmp = p->id;
      21    int tmp3;
      22    printf ("Thread reads %d.\n", tmp);
      23    __transaction_atomic
      24      {
      25        int tmp2 = gvar;
      26        usleep ((int) (10.0*rand()/(10+1.0))/100);
      27        gvar = tmp + tmp2;
      28        tmp3 = gvar;
      29      }
      30    printf("tmp3 = %d\n", tmp3);
      31    return 0;
      32  }
      33  
      34  int
      35  main()
      36  {
      37    int i, n = rand();
      38  
      39    for (i=0; i<n; i++)
      40      xyzzy (hello);
      41  
      42    return 0;
      43  }