Intel(R) Fortran Compiler for Linux* Systems User's Guide Volume I ...

Intel® Fortran Compiler for Linux* Systems User's Guide Volume I: Building
Applications
• Quotation mark character
A quotation mark (") character is recognized as starting an octal constant
("0..7) instead of a character literal ("...").
• Deleted records in relative files
When a record in a relative file is deleted, the first byte of that record is set
to a known character (currently ' @ ' ). Attempts to read that record later
result in ATTACCNON errors. The rest of the record (the whole record, if -
vms is not specified) is set to nulls for unformatted files and spaces for
formatted files.
• ENDFILE records
When an ENDFILE is performed on a sequential unit, an actual 1-byte
record containing a Ctrl/Z is written to the file. If -vms is not specified, an
internal ENDFILE flag is set and the file is truncated.
The -vms option does not affect ENDFILE on relative files: these files are
truncated.
• Implied logical unit numbers
The -vms option enables Intel Fortran to recognize certain environment
variables at run time for ACCEPT, PRINT, and TYPE statements and for
READ and WRITE statements that do not specify a unit number (such as
READ (*,1000)).
• Treatment of blanks in input
The -vms option causes the defaults for the keyword BLANK in OPEN
statements to become ' NULL ' for an explicit OPEN and ' ZERO ' for an
implicit OPEN of an external or internal file. For more information, see the
description of the OPEN statement.
• OPEN statement effects
Carriage control defaults to FORTRAN if the file is formatted, and the unit
is connected to a terminal (checked by means of isatty(3) ). Otherwise,
carriage control defaults to LIST.
The -vms option affects the record length for direct access and relative
organization files. The buffer size is increased by 1 to accommodate the
deleted record character.
• Reading deleted records and ENDFILE records
The run-time direct access READ routine checks the first byte of the
retrieved record. If this byte is ' @ ' or NULL ("\0"), then an ATTACCNON
error is returned.
The run-time sequential access READ routine checks to see if the record
it just read is one byte long and contains a Ctrl/Z. If this is true, it returns
EOF.
Compilation Diagnostics Options
The compilation diagnostics options let you specify the kinds of diagnostic
messages (warnings and errors) you want to receive.
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