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From:	"Walter Dnes (delete the 'z' to get my real address)" <wzaltdnes AT waltdnes DOT org>
Subject:	Is there a list of error numbers for G77 ???
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Date:	02 Aug 2009 21:43:25 GMT
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To:	djgpp AT delorie DOT com
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  For obscure reasons (no flames please) I want to write a program in
Fortran 77 code.  Since the gnu gcc maintainers have abandoned F77, the
only free choice seems to be DJGPP.  I'm running it on linux, under
dosemu 1.4.0.0, so it's effectively running under FreeDos.  Since I
downloaded gcc295.zip and g77-295b.zip, I assume I'm running DJGPP 2.95.

  Now for my question.  I'm trying to read from a text file into a
character string.  I get error 103, which is really useless as far as
debugging is concerned.  Is there any list of error codes and English
explanations thereof?

  I think the problem is that I'm trying to read a small text file, one
line at a time, using a character * 255 variable.  Here's a code
snippet.  It opens the file OK, but gets an error on the first read,
i.e. it does not echo the first line of IDF_CONF.TXT

      program IDFSY000
      implicit none
      integer iostaterror
      character * 255 inputline
      open(unit=21, status='OLD', file='IDF_CONF.TXT', blank='NULL',
     X access='SEQUENTIAL', iostat=iostaterror, err=32000)
      write(*,*) 'Sucessful open of IDF_CONF.TXT'
      do 1
        read(unit=21, end=2, iostat=iostaterror, err=32001) inputline
        write(*,*) inputline
    1 continue
    2 continue
      close(unit=21, status='KEEP')
      stop
32000 write(*,*) ' Failed to open IDF_CONF.TXT ERROR ', iostaterror
      stop
32001 write(*,*) ' Error ', iostaterror, ' while reading IDF_CONF.TXT'
      stop
      end


-- 
Walter Dnes; my email address is *ALMOST* like wzaltdnes AT waltdnes DOT org
Delete the "z" to get my real address.

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