FIX: C2857 Error Incorrectly Generated Using /Yc Option

• The Microsoft C/C++ Compiler (CL.EXE) included with: - Microsoft C/C++ for MS-DOS, version 7.0 - Microsoft Visual C++ for Windows, versions 1.0, 1.5 - Microsoft Visual C++ 32-bit Edition, versions 1.0, 2.0, 4.0

SYMPTOMS

If the /Yc option is used to create a precompiled header from a header file which contains a syntax error, as shown in the code below, the compiler will incorrectly generate the following error:

  error C2857: '#include' statement specified with the /Yctest.h
               command line option was not found in the source file

RESOLUTION

Correct the syntax errors contained in the header file.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed above. This bug was corrected in Visual C++ version 4.1.

MORE INFORMATION

The following code can be used to demonstrate this problem.

Sample Code

   /* Compile options needed: /Yctest.h /c
   */

TEST.H

   x int;  /* This file is intentionally given an error */
           /* to demonstrate the problem in the article */

TEST.CPP

   #include "test.h"

   void main(void)
   {
   }