On Sat, Jan 15, 2022 at 09:30:25PM -0800, Michel Alexandre Salim wrote: > Hi Jakub, > > On Fri, Jan 14, 2022 at 03:31:43PM +0100, Jakub Jelinek wrote: > > Hi! > > > > gcc 12 snapshot has landed as the system compiler into rawhide today. > > GCC 12 is going to enter its stage4 development phase (only regression > > and documentation bugfixes allowed) on Monday 17th, so there should be > > just those bugfixes and not new features etc. anymore. > > https://gcc.gnu.org/gcc-12/changes.html lists important changes, > > most important is probably that vectorization is enabled at -O2 now > > which is the option with most of the distribution is built with. > > > > https://gcc.gnu.org/gcc-12/porting_to.html is so far incomplete and lists > > some cases where people need to adjust their code. Other things > > include the usual C++ header changes, where previously some standard > > header included some other header as an implementation detail but it doesn't > > any longer and so code that relied on such indirect include that isn't > > required by the standard needs to include the header that provides whatever > > it relies on. Or e.g. packages using -Werror where new warnings are > > reported with the newer compiler and -Werror results in build failures. > > Can this be documented soon? > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99032 > > It hit nextcloud-client: > https://bugzilla.redhat.com/show_bug.cgi?id=2041135 which compiles fine > with GCC 11 for F34 and F35. > > > > > If there are bugs on the compiler side, please let me know immediately, > > so that those bugs can be fixed before the mass rebuild next week. > > > I'm going to exercise this with the new Folly stack on Monday once the > weekly tags are created. Will try and report ASAP. > Rebuilding folly, and building the latest tagged release, both fail with GCC 12: https://bugzilla.redhat.com/show_bug.cgi?id=2042690 It happens that libfmt has also been upgraded, so it's hard to pinpoint. I'm going to see if I can tag a scratch build of the newer fmt on a F35 sidetag so we can rule that out. Regards, -- Michel Alexandre Salim identities: https://keyoxide.org/5dce2e7e9c3b1cffd335c1d78b229d2f7ccc04f2
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