Re: GCC 12.1 Release Candidate available from gcc.gnu.org

[Iain Sandoe <idsandoe@googlemail.com>]

Hi Jakub,
thanks for doing the release.

> On 29 Apr 2022, at 15:34, Jakub Jelinek via Gcc <gcc@gcc.gnu.org> wrote:
> 
> The first release candidate for GCC 12.1 is available from
> 
> https://gcc.gnu.org/pub/gcc/snapshots/12.1.0-RC-20220429/
> ftp://gcc.gnu.org/pub/gcc/snapshots/12.1.0-RC-20220429/
> 
> and shortly its mirrors.  It has been generated from git commit
> r12-8321-g621650f64fb667.
> 
> I have so far bootstrapped and tested the release candidate on
> x86_64-linux.  Please test it and report any issues to bugzilla.

I have some mixed results, unfortunately.

OK:
i686, powerpc-darwin9 (bootstrapped with gcc-5.3) all supported langs.

x86_64-darwin{10..21} (bootstrapped with gcc-7.5) all supported langs.

Where I have bootstrapped D, that was using 11.3 as the bootstrap GDC.

results from:
https://gcc.gnu.org/pipermail/gcc-testresults/2022-May/760678.html
to:
https://gcc.gnu.org/pipermail/gcc-testresults/2022-May/760692.html

All of these show new fails (presumably because checking is off):

XPASS: c-c++-common/goacc/kernels-decompose-pr100400-1-2.c  -std=c++98 (internal compiler error)
FAIL: c-c++-common/goacc/kernels-decompose-pr100400-1-2.c  -std=c++98 (test for excess errors)
XPASS: c-c++-common/goacc/kernels-decompose-pr100400-1-2.c  -std=c++14 (internal compiler error)
FAIL: c-c++-common/goacc/kernels-decompose-pr100400-1-2.c  -std=c++14 (test for excess errors)
XPASS: c-c++-common/goacc/kernels-decompose-pr100400-1-2.c  -std=c++17 (internal compiler error)
FAIL: c-c++-common/goacc/kernels-decompose-pr100400-1-2.c  -std=c++17 (test for excess errors)
XPASS: c-c++-common/goacc/kernels-decompose-pr100400-1-2.c  -std=c++20 (internal compiler error)
FAIL: c-c++-common/goacc/kernels-decompose-pr100400-1-2.c  -std=c++20 (test for excess errors)

earlier x86 darwin is particularly noisy test-wise because there seem to be a lot of newer AVX512 tests
that do not check for support from the assembler etc.

====

We do not expect darwin9-11 to bootstrap with host tools, they do not have sufficient C++11 support.

However from Darwin12+ (macOS 10.8) we expect to be able to bootstrap with the host clang, but:

Not OK:
x86_64-darwin{12..15} FAIL to bootstrap with host clang, this is a regression.

the reason is that "gcc/analyzer/region-model.cc” uses initializer_lists, and it seems that <initializer_list>
is not transitively included by any used headers for _LIBCPP_VERSION < 4000.  I fixed that locally by
adding initializer_list into system.h (and adding INCLUDE_INITIALIZER_LIST to the top of 
gcc/analyzer/region-model.cc)
- with that change those versions do bootstrap and test OK***

OK:
x86_64-darwin{16..21} bootstrap OK with the host clang, and the test results show no surprises c.f. the
results with gcc-7.5 as the bootstrap.

If there’s an rc2 (or it seems reasonable anyway) it would be nice to fix the bootstrap with host tools.

thanks
Iain

*** I’ll do a patch for master/gcc-12 after the weekend (public holiday in the UK tomorrow), if no-one beats me to it…