INFO: /Zg Not Designed for Use with .CPP or .CXX Files

ID: Q98592

The information in this article applies to:

The Microsoft C/C++ Compiler (CL.EXE)
- Microsoft C/C++ for MS-DOS, version 7.0
- Microsoft Visual C++ for Windows, 16-bit edition, versions 1.0, 1.5, 1.51, 1.52
- Microsoft Visual C++, 32-bit Editions, versions 1.0, 2.0, 2.1, 4.0

If you specify the /Zg compiler option switch when compiling a file with the .CPP or .CXX file extension, the compiler may generate a large number of function prototypes. If the number of prototypes is very large, a null pointer assignment, run-time overflow, or other error can occur. This behavior varies depending on the amount of memory available to the compiler.

The /Zg option is not designed for use with .CPP or .CXX files. It is designed to generate function prototypes only for .C files.

Sample Code


   /*
    * Compile options needed: /Zg
    */ 

   #include <iostream.h>

   void main()
   {
      cout << "Hello out there";
   }

For an example of the behavior described in this article, please see the following article in the Microsoft Knowledge Base:

Q122042 BUG: Fatal Error C1001 Using /Zg with Large C++ Header Files

Additional query words: 8.00 8.00c 9.00 9.10

Keywords : kbCompiler kbCPPonly kbVC
Version : MS-DOS:7.0;WIN3X:1.0,1.5,1.51,1.52;WINNT:1.0,2.0,2.1,4.0;
Platform : MS-DOS NT WINDOWS
Issue type : kbinfo