id summary reporter owner description type status milestone component version severity resolution keywords cc 6287 hardcoded fwd declarations don't work for gcc configured withor --enable-symvers=gnu-versioned-namespace pluto@… Ion Gaztañaga "hi, the --enable-symvers=gnu-versioned-namespace gcc's configure option introduces a new versioned std::__7:: namespace and all these hardcoded std:: forward declarations won't work. {{{ #include #include int main() {     std::pair< int, int > p; } }}} $ /local/devel/toolchain46/x86_64-gnu-linux.host64/bin/x86_64-gnu-linux-g++  t.cpp -c -isystem /usr/include t.cpp: In function 'int main()': t.cpp:5:2: error: reference to 'pair' is ambiguous /usr/include/boost/interprocess/interprocess_fwd.hpp:47:8: error: candidates  are: template struct std::pair /local/devel/toolchain46/x86_64-gnu-linux.host64/lib64/gcc/x86_64-gnu- linux/4.6.3/../../../../x86_64-gnu- linux/include/c++/4.6.3/bits/stl_pair.h:87:12: error:                  template struct std::__7::pair t.cpp:5:13: error: expected primary-expression before 'int' t.cpp:5:13: error: expected ';' before 'int'" Bugs closed To Be Determined interprocess Boost 1.48.0 Showstopper fixed