Visual Studio 2010 - C++ Compile time IntelliSense errors

Question

Sometimes when I compile C++ projects, the build goes successful by saying "Build Succeeded". But, if you clicked on error list, it may show some errors such as "IntelliSense: incomplete type is not allowed". My question is what is that "IntelliSense" errors and should I have concerns on output executable file?

Answer 1

Intellisense errors are not necessarily real compiler errors. Remember Intellisense is a separate partial compiler designed for speed over accuracy. It partially compiles your code to help generate IDE completions and also is used by the IDE underline possible errors in the Visual Studio IDE.