Possible Coarray bug

I am having problems with a Coarray fortran code.

I have managed to isolate one of the issues in the form of the attached code and output. It executes correctly using the Cray compiler but it gives a divide by zero in the prolog of the subroutine using Intel compilers. I have tried with both versions 14 and 15 of the compiler with the same result.

Compile line is

ifort -coarray -switch no_launch -o error-caf-intel error-caf.f90

Execute line is

mpiexec.hydra -np 4 error-caf-intel

Please let me know if you would like any further information.