You can find a set of known issues and feature requests in our tracker. Some issues in the AppCode tracker are also applicable to the CLion EAP build.
What are the most important and known issues and limitations?
CMakeCache changes should be applied via Apply Changes and Reload button in the tool window.
Most compiler errors are not highlighted in the editor.
CLion doesn’t update CMakeLists.txt automatically when adding new file to the project.
CLion's new file wizard doesn't support C++ class templates.
Compilers, CMake and language standards limitations
CLion supports only GNU toolchain, that means only GCC and Clang compilers on Linux and OS X, and MinGW (or MinGW-W64) and Cygwin x64 toolchains on Windows.
Note: If you are using Visual Studio for C++ development (and Visual C++ Compiler), try our ReSharper for C++.
CLion supports only the following C and C++ standards: C99, C++03, C++11.