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Dear subscribers,

I was having a small problem with a program (compiled with gfortran) 
that gave me run time errors when writing to a direct access file. 
"Fortran runtime error: Record number not allowed for sequential access 
data transfer". And I could not figure out why.
So I wrote a tiny-weeny program to test the writing to direct access files:

      PROGRAM TOTO
      IREC=1
      ISIZ1=1870
      OPEN(UNIT=23,ACCESS='SEQUENTIAL',STATUS='SCRATCH',
     .     FORM='UNFORMATTED',RECL=ISIZ1)
      WRITE(23,REC=IREC) IREC
      END

This program gives me the run time error when compiled with gfortran, 
but gives no such error when compiled with g77. So for those of you who 
develop code, and who want to link their software to the ccp4 libraries, 
I think it is wiser to use the configure --with-g77 option for ccp4 
compilation if you want to write to direct access files. Perhaps this is 
a known bug in gfortran (I have sent an email to the gfortran developers 
and haven't heard from them yet), perhaps the version of gfortran I have 
here is obsolete...

But I thought I should warn the developers who are on the list.

Fred.