boost::thread give a compile error on SUN CC 5.9: /opt/SUNWspro/bin/CC +d -library=stlport4 -library=stlport4 -xcode=pic32 -erroff=wvarhidemem,hidevf,hidevfinvb -errtags=yes -features=tmplife -features=tmplrefstatic -g -mt -erroff=%none -KPIC -DBOOST_ALL_NO_LIB=1 -DBOOST_THREAD_BUILD_DLL=1 -DBOOST_THREAD_POSIX -I"." -c -o "bin.v2/libs/thread/build/sun-5.9/debug/stdlib-sun-stlport/threading-multi/pthread/thread.o" "libs/thread/src/pthread/thread.cpp" "libs/thread/src/pthread/thread.cpp", line 77: Error, badbinaryop: The operation "boost::shared_ptr<boost::detail::tss_cleanup_function> && void*" is illegal. "libs/thread/src/pthread/thread.cpp", line 588: Error, badbinaryop: The operation "boost::shared_ptr<boost::detail::tss_cleanup_function> || void*" is illegal. 2 Error(s) detected. make: *** [thread.o] Error 2 with this small patch it will compile: --- boost_1_42_0.org/libs/thread/src/pthread/thread.cpp 2009-10-19 11:18:13.000000000 +0200 +++ boost_1_42_0/libs/thread/src/pthread/thread.cpp 2010-02-10 13:48:25.037748000 +0100 @@ -74,7 +74,7 @@ namespace boost { current=next; ++next; - if(current->second.func && current->second.value) + if(current->second.func && (current->second.value != 0)) { (*current->second.func)(current->second.value); } @@ -585,7 +585,7 @@ namespace boost { (*current_node->func)(current_node->value); } - if(func || tss_data) + if(func || (tss_data != 0) ) { current_node->func=func; current_node->value=tss_data;