topic Something is very weird here. in Intel® Fortran Compiler

File OPEN crashing

NotThatItMatters — Thu, 19 Jul 2018 13:27:28 GMT

I have the following line of Fortran code early in my app:

OPEN(UNIT = FILDBGNUM, FILE = FILDBG, STATUS = 'REPLACE')

All arguments are appropriate. I am getting the error forrtl: severe (602): file not found.

Wait a second. The STATUS = 'REPLACE'. How could that error be generated?

Some things to check:

mecej4 — Thu, 19 Jul 2018 14:02:06 GMT

Some things to check:

Does the run time error occur show the line number when it occurs, and is that the line number of the OPEN statement that you showed?
Do you have other OPEN statements in your program?
Do you have write permission for the directory in which the OPEN statement may attempt to create a new/replacement file?

Question 1: Yes.

NotThatItMatters — Thu, 19 Jul 2018 14:13:33 GMT

Question 1: Yes.

Question 2: Yes.

Question 3: Yes.

The OPEN statement is the first one encountered in the executable. This app is QuickWin and the OPEN is coming as part of command-line processing. Here is its routine:

SUBROUTINE OPEN_DEBUG_FILE()
    INTEGER DOT_POS

    DOT_POS = SCAN(FILIN, '.', BACK = .TRUE.)
    FILDBG = FILIN(1:DOT_POS) // 'dbg'

    OPEN(UNIT = FILDBGNUM, FILE = FILDBG, STATUS = 'REPLACE')
END SUBROUTINE OPEN_DEBUG_FILE

FILIN is input as part of the command line. FILIN (CHARACTER string), FILDBG (CHARACTER string) and FILDBGNUM (INTEGER) are MODULE level variables. When the code is run in the VS debugger, the error occurs which is "OKed" and then the cursor is left on the OPEN statement with the claim of an Exception.

Please show the complete

Steve_Lionel — Thu, 19 Jul 2018 14:15:58 GMT

Please show the complete error message as displayed.

Have you checked the file

Arjen_Markus — Thu, 19 Jul 2018 14:15:58 GMT

Have you checked the file name that is created by this code? It might result in an invalid name.

I would like to respond to

NotThatItMatters — Thu, 19 Jul 2018 14:23:07 GMT

I would like to respond to this request, but I would also like to protect myself from public viewing of the code.

I take the opportunity of

LRaim — Thu, 19 Jul 2018 14:30:59 GMT

I take the opportunity of this thread about OPEN to add the following case/error experienced some weeks ago:

============================================================================

*** XPSIM, v. 2.02 ***
*** Process Simulation Program ***

*-----------------------------------------------------*

- Input, Calculation and Output Summary Report -

- Simulation started at 23.32.46 on JUN 29, 2018 -

* RUN N. 51 - STARTED AT 23.32.46 ON JUNE 29, 2018 *

    INPUT LISTING                                         P.   1
   * NO DIAGNOSTICS GENERATED *
    * PROCESS SIMULATION
      'TAP        STAFF            WATER FLOW              '
      IS EXECUTING *

   * INPUT PRINTOUT *
    GENERAL DATA                                          P.   5
    ACTIVE COMPONENTS                                     P.   6
    CHEM/PHYS CALCULATION METHODS                         P.   7
    STREAM 'S1      ' DATA                                P. 12
    UNIT OPERATION   1 - 'V1      '                       P. 12
    UNIT OPERATION   2 - 'PL1     '                       P. 13
    UNIT OPERATION   3 - 'F1      '                       P. 19
    STREAM 'INAIR   ' DATA                                P. 19
    UNIT OPERATION   4 - 'PSD1    '                       P. 19
    STREAM DICTIONARY/CROSS REFERENCES                    P. 20
    SIMULATION STATS/LOOPS DEFINITION                     P. 21

   * CALCULATION SUMMARY PRINTOUT *
forrtl: severe (46): inconsistent OPEN/CLOSE parameters, unit -130, file C:\USERS\LUIGI\APPDATA\LOCAL\TEMP\XPSIMWIN 3.0\STRMPARA.WKF
Image              PC                Routine            Line        Source
XPSIMV30.EXE       00007FF64DBC25E8 Unknown               Unknown Unknown
XPSIMV30.EXE       00007FF64DB89284 Unknown               Unknown Unknown
XPSIMV30.EXE       00007FF64D934AAE Unknown               Unknown Unknown
XPSIMV30.EXE       00007FF64D5713C7 DSTR_XREAD                357 v1sdlini.for
XPSIMV30.EXE       00007FF64DB59165 MAIN__                    497 V1XPSIM.FOR
XPSIMV30.EXE       00007FF64DC3521E Unknown               Unknown Unknown
XPSIMV30.EXE       00007FF64DC35659 Unknown               Unknown Unknown
KERNEL32.DLL       00007FFE73C83034 Unknown               Unknown Unknown
ntdll.dll          00007FFE74891431 Unknown               Unknown Unknown

============================================================================
The remark is that an OPEN statement (with the IOSTAT parameter defined) should never crash unless the memory was corrupted.
Undoubtedly such a case would be caught by the Microsoft C++ compiler.

Here is the error reported.

NotThatItMatters — Thu, 19 Jul 2018 15:02:07 GMT

Here is the error reported.

>>FILDBG (CHARACTER string)

jimdempseyatthecove — Thu, 19 Jul 2018 15:19:25 GMT

>>FILDBG (CHARACTER string) and FILDBGNUM (INTEGER) are MODULE level variables.

I do not see USE YourModuleName in the subroutine, nor do I see IMPLICIT NONE, therefore FILDBG, FILDBGNUM, ... are local implicit variables (undefined by the way).

Jim Dempsey

The module where the

NotThatItMatters — Thu, 19 Jul 2018 15:27:37 GMT

The module where the SUBROUTINE lies is INPUTOUTPUTFILE. Within the module are the following definitions:

USE IFPORT, ONLY : MAXPATH
IMPLICIT NONE
CHARACTER (LEN = MAXPATH), PRIVATE :: FILIN
CHARACTER (LEN = MAXPATH), PRIVATE :: FILDBG ! *.dbg
INTEGER, PUBLIC, PARAMETER :: FILDBGNUM = 21

PRIVATE OPEN_DEBUG_FILE

Hope this clarifies.

Something is very weird here.

Steve_Lionel — Thu, 19 Jul 2018 20:40:05 GMT

Something is very weird here. The normal "file not found" error is 29, not 602, and the message includes the unit number and the name of the file it tried to open.

Can you put together a small, self-contained example that demonstrates the problem?

The first thing I'd try is

gib — Fri, 20 Jul 2018 00:43:15 GMT

The first thing I'd try is putting a line like this ahead of the OPEN statement:

FILDBG = 'test'

There is a discrepancy

mecej4 — Fri, 20 Jul 2018 08:15:00 GMT

There is a discrepancy between the rather incomplete error reports in this thread and the full expansion of Error 602. The online documentation of the error, which you can see at https://software.intel.com/en-us/node/691978, is

602

severe (602): File not found

FOR$IOS_F6416. An OPEN statement specified STATUS='OLD' for a specified file or a directory path that does not exist.

If that error was triggered by an OPEN statement with STATUS='REPLACE', that would definitely be a bug. On the other hand, it should in that case be easy to create a short reproducer that is not restricted by considerations of protecting proprietary source code.

By stripping out most

NotThatItMatters — Fri, 20 Jul 2018 15:37:00 GMT

By stripping out most everything from the base code, I have created a reproducer. Attached is the code.

One BIG caveat here. I have been running the application (Visual Studio 2017) as administrator. IF I DO NOT DO THIS, THE APP RUNS FINE.

It would help if you provided

gib — Fri, 20 Jul 2018 22:00:44 GMT

It would help if you provided a command line to execute this program.

The main program in the

mecej4 — Sat, 21 Jul 2018 01:14:50 GMT

The main program in the "reproducer" has no executable statements. How are any of the OPEN statements in the subroutines ever reached?

"The main program in the

gib — Sat, 21 Jul 2018 02:13:51 GMT

"The main program in the "reproducer" has no executable statements. How are any of the OPEN statements in the subroutines ever reached?"

I was wondering about that, but thought it was probably just my ignorance of Windozy Fortran.

The executable is QuickWin.

NotThatItMatters — Sat, 21 Jul 2018 02:49:59 GMT

The executable is QuickWin. The file open is happening as part of the INITIALSETTINGS FUNCTION call. No executable statements necessary.

Typical command line arguments are

0 0 "File_name"

I had this in the Debug command from Visual Studio. I assumed that was saved with the project, but I guess not. I suppose I should have saved my own user settings.

I created a text file called

gib — Sat, 21 Jul 2018 04:45:25 GMT

I created a text file called zzz.dbg containing a few text lines. When I invoke the program from the command line like this:

reproducer 0 0 zzz.dbg

or like this

reproducer 0 0 "zzz.dbg"

it immediately terminates with exit code 0. No window is displayed. The behaviour is the same with Debug and Release builds. Is this what is expected?

By the way I have a very old version of Intel Fortran, 11.0.075.

The program needs 4 arguments

gib — Sat, 21 Jul 2018 05:54:33 GMT

The program needs 4 arguments, not 3. With:

reproducer 0 0 zzz.dbg 0

a window is opened. If I write FILDBG to a log file, just before the OPEN statement in OPEN_DEBUG_FILE(), I see the correct file name in the log file. zzz.dbg is replaced as expected (it becomes an empty file.)

Presumably this is the desired behaviour.