Cause
One case that the Intel C++ Compiler will emitting this diagnostic message is when using the "firstprivate" of OpenMP* with a wrong syntax.

Example
t.cpp:

#include <stdio.h>

int main(int argc, char* argv[]) 
{
	int mysum=0;

#pragma omp for firstprivate(mysum)
	for (int i=0; i<1000; i++) {
		mysum += i; 
	}

	printf("mysum=%drn", mysum);
	return 0;
}

Output from build environment on Windows:

Intel® Fortran Compiler 

The Intel® Fortran compiler supports the OpenMP* 2.5 specification for Fortran in the 10.x compiler and OpeMP* specification 3.0 for Fortran in the 11.x compiler. For more information, see the section on Parallelization in the Optimizing Applications section of the compiler documentation.

Operating System:

by Andrew Binstock