libgomp/testsuite/libgomp.c/address-space-1.c

   1 /* Verify OMP instances of variables with address space.  */
   2
   3 /* { dg-do run { target i?86-*-* x86_64-*-* } } */
   4 /* { dg-require-effective-target offload_device_nonshared_as } */
   5
   6 #include <assert.h>
   7
   8 int __seg_fs a;
   9
  10 int
  11 main (void)
  12 {
  13   // a = 123; // SIGSEGV
  14   int b;
  15 #pragma omp target map(alloc: a) map(from: b)
  16   {
  17     a = 321; // no SIGSEGV (given 'offload_device_nonshared_as')
  18     asm volatile ("" : : "g" (&a) : "memory");
  19     b = a;
  20   }
  21   assert (b == 321);
  22
  23   return 0;
  24 }