OpenMP 4.0 target data directive

Hello,

I am using the icc v14.0.0 compiler and I would like to use the #pragma omp target data directive as described here:

https://software.intel.com/en-us/node/514568

I have made a small example program that, to my eye, looks very similar to the example given in the above link. However, it produces a compile error.

#include <stdio.h>
#include <stdlib.h>
#include <omp.h>

int main(int argc, char* argv[])
{
  int *a, *b;
  a = (int *) malloc(sizeof(int));
  b = (int *) malloc(sizeof(int));
  *a = 1;
#pragma omp target data map(to:a) map(from:b)
  {
#pragma omp target
    {
      *b = *a;
    }
  }
  printf("%d\n", *b);
  return 0;
}

The compile error is the following:

$ icc -openmp -o test test.c
test.c(13): error: pointer variable "b" in this offload region must be specified in an in/out/inout/nocopy clause
  #pragma omp target
  ^

test.c(13): error: pointer variable "a" in this offload region must be specified in an in/out/inout/nocopy clause
  #pragma omp target
  ^

compilation aborted for test.c (code 2)

If I remove the 'target data' pragma and move the two map() clauses to the 'target' pragma, it compiles and runs on the target device as expected (according to the OFFLOAD_REPORT output).

What is the correct syntax for using the 'target data' pragma in OpenMP 4.0? How should I modify the above code so that it compiles with the 'target data' pragma?

Thank you for your help!

-Dan