id summary reporter owner description type status milestone component version severity resolution keywords cc 8949 Spirit VC10 compilation error : boost\spirit\repository\home\qi\operator\keywords.hpp(169): error C2653: 'mpl_' : is not a class or namespace name bruno.bianchi@… Joel de Guzman "When updating from 1.46 to 1.54 (zipped version), the following code failde to compiled with VC10: {{{ #include #include int main() { return 0; } }}} I got the following error: {{{ boost_1_54_0\boost\spirit\repository\home\qi\operator\keywords.hpp(169): error C2653: 'mpl_' : is not a class or namespace name }}} I tried with boot 1.51 and the error was already present. Is it a typing error ('mpl_' instead of 'mpl') or did I something wrong? " Bugs closed To Be Determined spirit Boost 1.54.0 Regression fixed mpl_ C2653