BUG: C1001 When Template Class Is Included in Precompiled Header

• Microsoft Visual C++, 32-bit Editions, version 6.0
• Microsoft Visual C++, 32-bit Enterprise Edition, version 5.0sp3
• Microsoft Visual C++, 32-bit Professional Edition, version 5.0sp3

SYMPTOMS

When template classes or template class header files are included in a precompiled header file, the compiler may generate the following error for files that use the precompiled header:

fatal error C1001: INTERNAL COMPILER ERROR
(compiler file 'msc1.cpp', line 1786)

-or-

fatal error C1001: INTERNAL COMPILER ERROR
(compiler file 'msc1.cpp', line 1188)

CAUSE

The compiler exceeds the allocated memory limit.

RESOLUTION

Use one of the following three suggested workarounds:

• Use compiler switch /Zm#nn to increase the compiler's heap memory allocation limit. The default value of #nn is 100 and the maximum value is 2000. Manually add this switch in Developer Studio: under the Project menu, click Setting, the click C/C++, then Project Options. Usually, a value of 1000 works.
  
  NOTE: You may need to increase the system virtual memory to accommodate the increased #nn for /Zm.
  
  -or-



• Remove the template class header files from the precompiled header file.
  
  -or-



• Use "Automatic use of precompiled headers" (/YX switch), or, "Not using precompiled header."

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

Keywords          : kbCompiler kbLangCPP kbVC600bug kbVC500SP3bug 
Version           : WINDOWS:5.0sp3; WINNT:5.0sp3,6.0
Platform          : WINDOWS winnt 
Issue type        : kbbug 

Last Reviewed: July 9, 1999