DOCUMENT:Q106723 02-NOV-1999 [fortran] TITLE :BUG: Redirection of Input to a Spawned PowerStation App Fails PRODUCT :Microsoft Fortran Compiler PROD/VER::1.0,1.0a OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft FORTRAN PowerStation for MS-DOS, versions 1.0, 1.0a ------------------------------------------------------------------------------- SYMPTOMS ======== PowerStation applications spawned with either SYSTEMQQ or RUNQQ hang when input is redirected from a file. Also, the input is split and directed at both the application and the console. CAUSE ===== The MS-DOS extender that comes with PowerStation does not handle console input the same way as MS-DOS does. The hang occurs because the spawned application is waiting for an end-of-file (EOF). STATUS ====== Microsoft has confirmed this to be a problem in FORTRAN PowerStation version 1.0 and version 1.0a for MS-DOS. This is not a problem in FORTRAN PowerStation 32. MORE INFORMATION ================ Applications that are not MS-DOS extended handle redirection input incorrectly when spawned with RUNQQ or SYSTEMQQ. To demonstrate the problem, follow these steps: 1. Copy both sample programs into the same directory. 2. Compile both TEST.FOR and B.FOR with FORTRAN PowerStation 1.0 for MS-DOS. 3. Run TEST.EXE. Sample Code #1 (TEST.FOR) ------------------------- C No compiler options required include 'flib.fi' include 'flib.fd' if(.not.SystemQQ('b < test.for')) print*, 'systemqq failed' end Sample Code #2 (B.FOR) ---------------------- C No compiler options required character*20 c ierr = 0 do while(ierr.ne.-1) read(*,"(a)",iostat=ierr) c print*, c end do end Additional query words: nofpsnt 1.00 ====================================================================== Keywords : Technology : kbAudDeveloper kbFortranSearch kbZNotKeyword3 kbFORTRANPower100DOS kbFORTRANPower100aDOS Version : :1.0,1.0a ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.