An attempt to create a debugging library that uses precompiled headers may fail, and fatal build errors may be generated

   /*

    * To demonstrate this problem, perform the following five steps:
    *
    * 1. Compile TEST1.C as follows: cl /Yctest.h /Z7 /c TEST1.C
    * 2. Compile TEST2.C as follows: cl /Yutest.h /Z7 /c TEST2.C
    * 3. Build a library that contains TEST1.OBJ and TEST2.OBJ as
    *    follows: lib /out:test.lib test1.obj test2.obj
    * 4. Compile TEST3.C as follows: cl /Yutest.h /Z7 /c TEST3.C
    * 5. Link the application as follows:
    *       link /debugtype:cv /debug:notmapped,full test3.obj test.lib
    *
    * To correct this problem, do one of the following:
    *
    *   1. 32-bit only)  Compile TEST1.C in step 1 as follows:
    *        cl /Yctest.h /YlAnyName /Z7 /c TEST1.C
    *      Then, repeat step 2 through 5.
    *
    *   2. Repeat steps 1 through 5, adding the /Yd command line option
    *      to steps 1, 2, and 4.

    */ 
				

   #include <stdio.h>
				

   #include "test.h"
				

   #include "test.h"

   void test2func(void)
   {
      printf("inside TEST2FUNC...\n");
   }
				

   #include "test.h"

   void test2func(void);

   void main(void)
   {
      printf("inside MAIN...\n");
   }