Code Completion don't really work entirely on Linux, but all is as expected on Windows.
Here are logs (latest nightly).
Windows 7 64-bit (log_win.txt)
Ubuntu (Xubuntu) 14.04 amd64 (log_xubu.txt)
Error is probably:
NativeParser::DoFullParsing(): AddCompilerPredefinedMacros failed!
NativeParser::DoFullParsing(): AddProjectDefinedMacros failed!
and
ReadClsNames() : Unexpected token '((__aligned__))' for 'struct57___pthread_unwind_buf_t', file '/usr/include/pthread.h', line 542
While all that stuff is normally parsing on windows system...