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#include <boost/filesystem.hpp> #include <boost/thread.hpp> namespace { boost::mutex m1; boost::recursive_mutex m2; void threadmain() { boost::lock_guard<boost::mutex> lock1(m1); boost::lock_guard<boost::recursive_mutex> lock2(m2); boost::filesystem::path p(boost::filesystem::current_path()); } } int main() { boost::thread foo(threadmain); foo.join(); return 0; }