Hi, There are several problems reported by regression tests with the string_algo library on vcpp and mipspro compilers. I have no experience with these compilers and I wasn't able to figure out where the problem is from the error messages. 1. VCPP Following message is outputed: "/usr/vacpp/include/xmemory", line 120.23: 1540-0401 (S) The member "std::allocator<const char>::address(const_reference) const" is already declared. "/usr/vacpp/include/xmemory", line 118.17: 1540-0425 (I) "address" is defined on line 118 of "/usr/vacpp/include/xmemory". "/usr/vacpp/include/set", line 70.26: 1540-0700 (I) The previous message was produced while processing "class std::allocator<const char>". xlC -c -I/home/tk/boost_regression/boost -qNOOPTimize -qnoinline -g -qfullpath -qnotempinc -qfuncsect -qeh -qrtti -I"../bin/boost/libs/algorithm/string/test" -I"/home/tk/boost_regression/boost" -o "../bin/boost/libs/algorithm/string/test/find.test/vacpp/debug/find_test.o" "../libs/algorithm/string/test/find_test.cpp" It seems that the problem is triggered in my code by calling std::set<char>( char*, char* ) constructor. 2. MIPSPro In addtion to the following error in test framework: cc-1040 CC: ERROR File = /disk2/home/tk/boost_regression/boost/libs/test/src/test_tools.cpp, Line = 195 An identifier is expected. if( std::isprint( t ) ) ^ I'm getting similar error as with vcpp: cc-1377 CC: ERROR File = /usr/include/CC/stl_alloc.h, Line = 593 Member function function "std::allocator<const char>::address(std::allocator<const char>::reference) const" has already been declared. const_pointer address(const_reference __x) const { return &__x; } ^ A template was detected during header processing. instantiation of class "std::allocator<const char>" at line 92 of "/usr/include/CC/stl_set.h" instantiation of "std::set<const char, std::less<const char>, std::allocator<const char>>::set(const char *, const char *)" at line 74 of "/disk2/home/tk/boost_regression/boost/boost/algorithm/st ring/detail/classification.hpp" instantiation of "boost::algorithm::detail::is_any_ofF<const char>::is_any_ofF(const char (&)[4])" at line 201 of "/disk2/home/tk/boost_regression/boost/boost/algorithm/st ring/classification.hpp" instantiation of "boost::algorithm::detail::is_any_ofF<const char> boost::algorithm::is_any_of(const char (&)[4])" at line 143 of "../libs/algorithm/string/test/find_test.cpp" Can anybody help? Thanks, Pavol.