问题
Intellisense in Visual Studio 2010 interprets C code as C++ and marks errors where they don't exist, as in:
struct my_struct *s = malloc(sizeof *s);
which is valid C, but not valid C++.
Is there any way to fix this?
回答1:
It is a known bug since at least MSVC 2005. Unfortunately it has become a bigger issue in 2010 since VC now uses Intellisense to mark errors.
See this discussion at the MSDN forums for more information. The following statement is disheartening, but I highly recommend that you add your voice to the conversation in the hopes that they may address the issue some day.
I am just following up and let you know that we won't fix this bug in next VS release/update.
If this bug affects your daily productivity severely, you can open/activate this bug with connect again.
Note that you can disable Intellisense's error reporting in Tools → Options... → Text Editor → C/C++ → Advanced → Intellisense → Disable Error Reporting → True. Of course, this really stinks if you're in a mixed solution or simply want to include an extern "C" header that throws Intellisense errors.
来源：https://stackoverflow.com/questions/2973277/visual-studio-2010-intellisense-squiggles-for-c-code