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.
Speaking of which, folly is also affected by this which affected GCC 11,
so I'll update the bug either to confirm it is still broken in 12 or it
has been fixed:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104008
Best regards,
--
Michel Alexandre Salim
identities:
https://keyoxide.org/5dce2e7e9c3b1cffd335c1d78b229d2f7ccc04f2