C++: warning: '…' declared with greater visibility than the type of its field '…::'

Question

I\'m getting these two warnings (with GCC 4.2 on MacOSX):

/Users/az/Programmierung/openlierox/build/Xcode/../../src/main.cpp:154:0 /Users/az/Programmierung/openliero

Answer 1

There seems to be a problem with shared libraries. I assume you are writing a shared library. Look at this explanation. Try to add the command line option -fvisibility-inlines-hidden. The problem seems to be, that gcc tries to export some symbols of MainLockDetector (visible to linking executables and libraries), whereas Action is not exported (invisible to linking executables and libraries). So the visibility of MainLockDetector really is higher than the visibility of Action.