Microsoft KB Archive/43065
PRB: Read-only File Fails to Generate F6421 Error PSS ID Number: Q43065 Article last modified on 02-11-1993
|The information in this article applies to:|
|- Microsoft FORTRAN for MS-DOS, versions 4.0, 4.01|
SYMPTOMS When an application developed in Microsoft FORTRAN attempts to write to a read-only file, the write does not succeed but does not report a run- time error. The compiler is designed to generate the following error message:
run-time error F6421: - file read-only or locked against writing
STATUS Microsoft has confirmed this to be a problem in FORTRAN versions 4.0 and 4.01. This problem was corrected in FORTRAN version 4.1.
The following code should generate a “F6421 file read-only or locked against writing” error when the A.B file is read-only.
C Compiler options required: None
OPEN (1, FILE = 'A.B', MODE = 'READ', ACCESS = 'DIRECT', 1 RECL = 10) WRITE (1, REC = 1) 'TESTING ' END
Additional reference words: 4.00 4.01
Copyright Microsoft Corporation 1993.