offload/test/mapping/pr38704.c

   1 // RUN: %libomptarget-compile-run-and-check-generic
   2
   3 // Clang 6.0 doesn't use the new map interface, undefined behavior when
   4 // the compiler emits "old" interface code for structures.
   5 // UNSUPPORTED: clang-6
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9
  10 typedef struct {
  11   int *ptr1;
  12   int *ptr2;
  13 } StructWithPtrs;
  14
  15 int main(int argc, char *argv[]) {
  16   StructWithPtrs s, s2;
  17   s.ptr1 = malloc(sizeof(int));
  18   s.ptr2 = malloc(2 * sizeof(int));
  19   s2.ptr1 = malloc(sizeof(int));
  20   s2.ptr2 = malloc(2 * sizeof(int));
  21
  22 #pragma omp target enter data map(to : s2.ptr2[0 : 1])
  23 #pragma omp target map(s.ptr1[0 : 1], s.ptr2[0 : 2])
  24   {
  25     s.ptr1[0] = 1;
  26     s.ptr2[0] = 2;
  27     s.ptr2[1] = 3;
  28   }
  29 #pragma omp target exit data map(from : s2.ptr1[0 : 1], s2.ptr2[0 : 1])
  30
  31   // CHECK: s.ptr1[0] = 1
  32   // CHECK: s.ptr2[0] = 2
  33   // CHECK: s.ptr2[1] = 3
  34   printf("s.ptr1[0] = %d\n", s.ptr1[0]);
  35   printf("s.ptr2[0] = %d\n", s.ptr2[0]);
  36   printf("s.ptr2[1] = %d\n", s.ptr2[1]);
  37
  38   free(s.ptr1);
  39   free(s.ptr2);
  40   free(s2.ptr1);
  41   free(s2.ptr2);
  42
  43   return 0;
  44 }