Is it ok mixing compiler option std=c++11 with older compiler options std=c++0x

Upgraded C++ compiler to 4.8.5. If linked with 2 different compiled objects std=c++11 and std=c++0x whether unpredictable behaviour possible? The STL lib has 2 versions. One for C++98 and another for C++11. C++ STL shows 2 versions for each library function. Whether STL will misbehave if linked with 2 different compiled objects