Revision 129442 http://gcc.gnu.org/ml/gcc-cvs/2007-10/msg00547.html
moved a few header files from include/ext to include/backward, which introduced a new libstdc++ API. If a C++ applications want to support both 4.2 and 4.3 APIs, it needs a way to tell different APIs, something like #if GLIBCXX_API == 43 #include <ext/hash_set> #else #include <backward/hash_set> #endif -- Summary: Can't tell gcc 4.3 libstdc++ API from gcc 4.2 libstdc++ API Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hjl at lucon dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33832