GCC 6 Release Series Changes, New Features, and Fixes This page is a brief summary of some of the huge number of improvements in GCC 6. For more information, see the Porting to GCC 6 page and the full GCC documentation. Caveats The default mode for C++ is now -std=gnu++14 instead of -std=gnu++98. Support for a number of older systems and recently unmaintained or untested target ports of GCC has be