NUMBER:  151

  ERROR CODE:  F

  MESSAGE TEXT:  allocatable array is already allocated

  EXPLANATION:  A Fortran 95/90 allocatable array must not already be
  allocated when you attempt to allocate it.  You must deallocate the
  array before it can again be allocated.

  This error is not returned by IOSTAT.  However, this error can be
  returned by STAT in an ALLOCATE statement.