'!$OMP' directive followed by several spaces

[Philippe Schaffnit]

Hi!

I stumbled accross something which I find a bit surprising, but this
could very well be only due to poor understanding...

If an '!$OMP' directive is followed by several spaces, it causes a error
('Error: Unclassifiable OpenMP directive at...'): is this forbidden,
then why? (the Intel and Sun compilers do not even issue a warning...)

This happens under Linux with 4.3.0 20070214.

Thanks!

Philippe

PS: some sources which show that (for me)!
!
      PROGRAM Hello
!
      CHARACTER ( LEN = * ), PARAMETER ::   String = "Hello world!"
!
!$OMP  PARALLEL DO
      WRITE ( 6, "(/A/)" ) TRIM(String)
!$OMP END PARALLEL DO
!
      END PROGRAM Hello
!

PPS: what I get:
gfortran -fopenmp -c Hello.f90 -ffree-form 
Hello.f90:6.6:

!$OMP  PARALLEL DO
     1
Error: Unclassifiable OpenMP directive at (1)
Hello.f90:8.21:

!$OMP END PARALLEL DO
                    1
Error: Unexpected !$OMP END PARALLEL DO statement at (1)