-msext

Allows Microsoft® Visual C++ extensions.

  -msext on | off

  

Turn on this option to allow Microsoft Visual C++ extensions:

• Redefinition of macros
• Allows XXX::yyy syntax when declaring method yyy of class XXX
• Allows extra commas
• Ignores casts to the same type
• Treats function types with equivalent parameter lists but different return types as equal
• Allows pointer-to-integer conversions, and various syntactical differences

When off, this command disables the extensions. It is default on non-x86 targets.