Q44240: Problem Editing QuickBASIC 4.50 Module Without COMMON
Article: Q44240 Product(s): See article Version(s): 4.50 Operating System(s): MS-DOS Keyword(s): ENDUSER | SR# S890501-102 buglist4.50 B_BasicCom | mspl13_basic Last Modified: 28-FEB-1990 The procedure below reproduces a problem editing a file that is a secondary module that does not include the same named COMMON block as the main module. After you follow the steps below, QB.EXE hangs when trying to execute the program. Microsoft has confirmed this to be a problem in the Microsoft QuickBASIC Compiler Version 4.50. This problem was corrected in the QBX.EXE environment of Microsoft BASIC Professional Development System (PDS) Version 7.00 for MS-DOS and MS OS/2 (fixlist7.00). The problem occurs whether the programs are saved in the "Fast Load and SAVE" or "Text" format. Refer to the following modules in the procedure below: MODULE A -------- COMMON /c/ d() DIM d(1) MODULE B -------- (contains nothing) The steps that reproduce the problem are as follows: 1. Get into QuickBASIC and create MODULE A (which contains the code above). 2. Press ALT+F C to create MODULE B (which has no code in it). 3. Press ALT+F V (save all) and ALT+F X to exit QB.EXE. 4. Start QuickBASIC again, loading MODULE A with the command "QB A" (this also loads B.BAS). 5. Press F5 to start the program. 6. Go to MODULE B with F2 and select B.BAS. 7. Type anything into MODULE B and backspace over it so that nothing is in the module, as before. 8. Save all the modules with ALT+F V. (Actually, any sort of save here reproduces the problem.) 9. Press F5 to continue. 10. Press F5 and the program hangs. [Any combination of F5, SHIFT+F5, and ALT+R R (restart) in Steps 7 and 8 reproduces this problem.]
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 1986-2002.