Help Files: Fortran77: IO Error Messages

     HELP                      June 15, 1985           F77/IO_ERR_MSGS



                        I/O Library Error Messages

          The following error messages are generated by  the  I/O  li-
     brary.  The error numbers are returned in the 'iostat=' variable.
     See "help f77 error_msgs" for information on other types of error
     messages.



     100  "error in format"
          See error message output for the location of  the  error  in
          the  format.  Can be caused by more than 10 levels of nested
          parentheses, or an extremely long format statement.


     101  "illegal unit number"
          It is illegal to close logical unit 0.  Unit numbers must be
          between 0 and 99 inclusive.


     102  "formatted i/o not allowed"
          The logical unit was opened for unformatted I/O.


     103  "unformatted i/o not allowed"
          The logical unit was opened for formatted I/O.


     104  "direct i/o not allowed"
          The logical unit was opened for sequential  access,  or  the
          logical record length was specified as 0.


     105  "sequential i/o not allowed"
          The logical unit was opened for direct access I/O.


     106  "can't backspace file"
          The file associated with the logical unit can't seek. May be
          a device or a pipe.


     107  "off beginning of record"
          The format specified a left tab beyond the beginning  of  an
          internal input record.


     108  "can't stat file"
          The system can't return status information about  the  file.
          Perhaps the directory is unreadable.


     109  "no * after repeat count"
          Repeat counts in list-directed I/O must be followed by an  *
          with no blank spaces.


     110  "off end of record"
          A formatted write tried to go  beyond  the  logical  end-of-
          record. An unformatted read or write will also cause this.


     111  "truncation failed"
          The truncation of an external sequential file on  ``close'',
          ``backspace'', ``rewind'' or ``endfile'' failed.


     112  "incomprehensible list input"
          List input has to be just right.


     113  "out of free space"
          The library dynamically creates buffers  for  internal  use.
          You ran out of memory for this.  Your program is too big!


     114  "unit not connected"
          The logical unit was not open.


     115  "invalid data for integer format term"
          Only spaces, a leading sign and digits are allowed.


     116  "invalid data for logical format term"
          Legal input consists of spaces (optional), a period (option-
          al), and then a ``t'', ``T'', ``f'', or ``F''.


     117  "'new' file exists"
          You tried to open an existing file with "status='new'".


     118  "can't find 'old' file"
          You tried to open a non-existent file with "status='old'".


     119  "opening too many files or unknown system error"
          Either you are trying to open too many files  simultaneously
          or there has been an undetected system error.


     120  "requires seek ability"
          Direct access requires seek ability.  Sequential unformatted
          I/O  requires  seek  ability  on the file due to the special
          data structure required. Tabbing  left  also  requires  seek
          ability.


     121  "illegal argument"
          Certain arguments to 'open', etc. will be checked for  legi-
          timacy. Often only non- default forms are looked for.


     122  "negative repeat count"
          The repeat count for list directed input must be a  positive
          integer.


     123  "illegal operation for unit"
          An operation was requested for a device associated with  the
          logical  unit which was not possible. This error is returned
          by the tape I/O routines if attempting to read past  end-of-
          tape, etc.


     124  "invalid data for d,e,f or g format term"
          Input data must be legal.