DOCUMENT:Q149147 06-NOV-1999 [fortran] TITLE :BUG: Equivalence and Non-Common Block Variable Cause ASSERT PRODUCT :Microsoft Fortran Compiler PROD/VER::4.0 OPER/SYS: KEYWORDS:kbFortranPS kbLangFortrankbbuglist ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Fortran PowerStation for Windows 95 and Windows NT, version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== Assigning a value to an equivalenced variable not part of a common block in an internal subroutine when the associated equivalenced variable is part of a common block causes the following compile-time ASSERT failure message to be generated: Assertion failed: base->key.be_key != 0, file err_genex.c, line 2828 abnormal program termination RESOLUTION ========== Do one of the following to work around the problem: - Redeclare the common block and equivalence in the internal procedure. -or- - Do not assign a value to the non-common block equivalenced variable. STATUS ====== Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. MORE INFORMATION ================ Sample Code to Illustrate Problem --------------------------------- ! Compile options needed: none program test real r integer i common /theblock/ i equivalence (r,i) call b print *, r contains subroutine b ! uncomment the next 4 lines for work-around ! real r ! integer i ! common /theblock/ i ! equivalence (r,i) r = 1.0 ! This line causes an ASSERT failure end subroutine b end program test Additional query words: 4.00 ====================================================================== Keywords : kbFortranPS kbLangFortran kbbuglist Technology : kbAudDeveloper kbPTProdChange kbFortranSearch kbFORTRANPower400NT Version : :4.0 ============================================================================= 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.