id summary reporter owner description type status milestone component version severity resolution keywords cc 6247 Warning from boost/spirit/include/phoenix.hpp with g++ -c -W at -O1 and higher tom.arbuckle@… Joel de Guzman "Compiling boost/spirit/include/phoenix.hpp with gcc -c -W produces a warning (""used uninitialized"") at optimization levels of -O1 and higher. Without compiler optimization, i.e. -O0 or optimization flag omitted, no warning seen. Problem seen in boost 1.47 and boost 1.48. " Bugs closed To Be Determined spirit Boost 1.48.0 Problem obsolete