[Boost-users] [Spirit] dereferencing type-punned pointer will break strict-aliasing rules

Hi, compiling the attached example with gcc-4.4.3 (Ubuntu 10.4, 64bit) with -Wall -O3 leads to a long warning message (second attachment), culminating in boost/1.44/include/boost/function/function_base.hpp:321: warning: dereferencing type-punned pointer will break strict-aliasing rules boost/1.44/include/boost/function/function_base.hpp:325: warning: dereferencing type-punned pointer will break strict-aliasing rules I wonder how I could avoid this without -fno-strict-aliasing or -Wno-strict-aliasing? Thanks and regards, Roland