BUG: Trigraph Statements May Produce End-of-File Error

• Microsoft C/C++ Compiler (CL.exe) included with:

      - Visual C++ for Windows, versions 1.0, 1.5
      - Visual C++, 32-bit Edition, versions 1.0, 2.0, 4.1, 4.2, 5.0
  

SYMPTOMS

Trigraphs are three-character sequences used to represent punctuation unavailable in a character set. When the compiler encounters Trigraph statements that use ifdef and endif statements, it gives the following erroneous end-of-file error:

   fatal error C1004: unexpected end of file found.

CAUSE

Trigraph translation is not finished before processing, so the #endif (the equivalent of ??=endif) is not reached.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

NOTE: This problem did not occur in Microsoft Visual C++, 32-bit Edition, version 4.0.

MORE INFORMATION

The following is sample code to reproduce the problem:

   /* Compile options needed: none
   */

   ??=ifdef TESTING
   int i=0;
   ??=endif