Believe it or not, GCC 7.1 marks the 30th anniversary of GNU Compiler Collection’s first Beta release. It’s a major release featuring lots of new functionality and improvements that aren’t available in the GCC 6.x or any other previous branch of the project, which makes it the recommended version for all platforms using GCC. Prominent new features of GNU Compiler Collection 7.1.0 include experimental support for all the current C++17 draft library features in the C++ frontend, bringing the -std=gnu++1z and -std=c++1z options, as well as of some of them in the libstdc++ library, support for the Address Sanitizer to report the use of variables after leaving their scope.