Article ID: 216747
Article Last Modified on 5/6/2001
APPLIES TO
- Microsoft Visual C++ 6.0 Professional Edition
This article was previously published under Q216747
SYMPTOMS
Incorrect code may be generated with the /Og and /G6 compiler optimizations.
CAUSE
The compiler incorrectly moves an .inc file, .add file, .sub file, or .lea file across an instruction that references memory.
STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.
This bug was corrected in Visual Studio 6.0 Service Pack 3. For more information about Visual Studio service packs, please see the following articles in the Microsoft Knowledge Base:
MORE INFORMATION
The following code illustrates one way the compiler can handle moving an instruction:
inc eax
mov [eax + 2*ebx + 3]
The compiler needs to update the displacement to swap the instructions. For example:
mov [eax + 2*ebx + (3 + 1)]
inc eax
Keywords: kbbug kbfix kbvs600sp3fix KB216747
