KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q67781: C1001: Internal Compiler Error: grammar.c, Line 140

Article: Q67781
Product(s): See article
Version(s): 6.00a  | 6.00a
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | buglist6.00a | mspl13_c
Last Modified: 31-JAN-1991

The C version 6.00a compiler produces the following internal compiler
error when the sample program below is compiled the /Ox or /Oe
optimizations:

   foo.c(9):fatal error C1001:Internal Compiler Error
       (compiler file '../grammar.c', line 140)
       Contact Microsoft Product Support Services

The following are valid workarounds for this problem:

1. Compile with any optimization not containing /Oe.

2. Disable the "e" optimization using the optimize pragma.

Sample Code
-----------

1  typedef struct utype { char bitmap[10]; } Utype;
2  extern Utype utypes[];
3
4  void InitializeBitmaps(void)
5  {
6     int cnt,cnt2;
7     for(cnt=0;cnt<13;cnt++)
8       for(cnt2=0;cnt2<10;cnt2++)
9          utypes[cnt].bitmap[cnt2]=(char)~utypes[cnt].bitmap[cnt2];
10 }

Microsoft has confirmed this to be a problem in Microsoft C version
6.00a. We are researching this problem and will post new information
here as it becomes available.

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.