after #include <iostream> strlen(),strcat(), etc are declared in not in std namespace (like: std::strlen()), but in global namespace (like: ::strlen() )
-- Summary: namespace, <iostream>, <cstring> Product: gcc Version: 4.2.1 Status: UNCONFIRMED Severity: minor Priority: P3 Component: other AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: mayor1 at uralweb dot ru GCC build triplet: -Wall -Wextra --pedantic GCC host triplet: -Wall -Wextra --pedantic GCC target triplet: -Wall -Wextra --pedantic http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38531