On Sun, Nov 16, 2025 at 08:43:11PM +0100, Jakub Jelinek wrote: > On Sun, Nov 16, 2025 at 10:37:44AM -0600, Segher Boessenkool wrote: > > On Sun, Nov 16, 2025 at 12:06:57AM +0100, Jakub Jelinek wrote: > > > On Mon, Nov 03, 2025 at 01:34:28PM -0500, Marek Polacek via Gcc wrote: > > > > I would like us to declare that C++20 is no longer experimental and > > > > change the default dialect to gnu++20. > > > > Defaulting to something that is just a few years old is super > > aggressive, esp. because not many people will test building with > > something else, although we still support it (building a cross with a > > slightly older compiler, for example). > > > > So let's at least not got any further than this! Document that five > > years is the limit, even? > > This is not bumping the minimum version that gcc can be built with, > that stays to be C++14.
Yes. But it changes the default used. So it changes the version used on all native bootstraps, what most people use. > This is about what C++ standard g++ uses when users don't specify > any -std= options. > E.g. for C we default to C23, which is 2 years old. For C++ we currently > default to C++17, which is 8 years old. And GNU++20 is only four-and-a-half years old, quite young! Segher
