The following topics are some of the known places where the Visual C++ implementation of C++ does not agree with the C++ standard. The section numbers refer to section numbers in the C++ standard.
Compiler Limits
10.3 (Paragraph 5) Covariant Return Types
14 export Keyword on a Template
14.6.2 Dependent Names
15.4 Function Exception Specifiers
16.3.2 The # Operator
21.1.1 Character Traits Requirements
Storage Location of Objects