Date: Sun, 11 Sep 2022 09:04:31 +0000 From: Lorenzo Salvadore <phascolarctos@protonmail.ch> To: Mark Millard <marklmi@yahoo.com> Cc: FreeBSD Toolchain <freebsd-toolchain@freebsd.org>, FreeBSD Mailing List <freebsd-ports@freebsd.org> Subject: Re: lang/gcc12 's g++12 gets a failure on aarch64 FreeBSD (main) but not on aarch64 Fedora (36), small test case Message-ID: <5T6hqjycYy4YYKvw5nXon_xY9KeiiyI3SqHjD07MbHj79un1XGi3AvhFF02Do-8fthrShlq8QEdhwh1ZZB0OgGQaF8tqsYTcVycUlbvOY_I=@protonmail.ch> In-Reply-To: <913100F3-F0DC-45F0-BF08-8D4146276636@yahoo.com> References: <913100F3-F0DC-45F0-BF08-8D4146276636.ref@yahoo.com> <913100F3-F0DC-45F0-BF08-8D4146276636@yahoo.com>
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------- Original Message -------
On Saturday, September 3rd, 2022 at 23:24, Mark Millard <marklmi@yahoo.com>=
wrote:
>=20
>=20
> On aarch64 FreeBSD (see the comment for the failure message):
>=20
> // g++12 -std=3Dc++20 -fmodules-ts -xc++-system-header memory
> // g++12 -std=3Dc++20 -fmodules-ts -c gpp12_module_dynamic_pointer_cast_f=
ailure.cpp
> //
> // gets:
> //
> // during IPA pass: visibility
> // gpp12_dynamic_pointer_cast_failure.cpp:21:1: internal compiler error: =
in function_and_variable_visibility, at ipa-visibility.cc:716
> // 21 | }
> // | ^
>=20
> import <memory>;
>=20
>=20
> struct data
> {
> virtual ~data() =3D default;
> };
>=20
> void test(std::shared_ptr<data> b)
>=20
> {
> auto dpc =3D std::dynamic_pointer_cast<data>(b);
>=20
> }
>=20
>=20
>=20
>=20
> Note: On FreeBSD, I do my own poudriere-devel based port builds
> and install the resulting packages. For reference:
>=20
> # g++12 -v
> Using built-in specs.
> COLLECT_GCC=3Dg++12
> COLLECT_LTO_WRAPPER=3D/usr/local/libexec/gcc12/gcc/aarch64-portbld-freebs=
d14.0/12.2.0/lto-wrapper
> Target: aarch64-portbld-freebsd14.0
> Configured with: /wrkdirs/usr/ports/lang/gcc12/work/gcc-12.2.0/configure =
--disable-multilib --disable-bootstrap --disable-nls --enable-gnu-indirect-=
function --enable-host-shared --enable-plugin --libdir=3D/usr/local/lib/gcc=
12 --libexecdir=3D/usr/local/libexec/gcc12 --program-suffix=3D12 --with-as=
=3D/usr/local/bin/as --with-gmp=3D/usr/local --with-gxx-include-dir=3D/usr/=
local/lib/gcc12/include/c++/ --with-gxx-libcxx-include-dir=3D/usr/include/c=
++/v1 --with-ld=3D/usr/local/bin/ld --with-pkgversion=3D'FreeBSD Ports Coll=
ection' --with-system-zlib --without-zstd --enable-languages=3Dc,c++,objc,f=
ortran,jit --prefix=3D/usr/local --localstatedir=3D/var --mandir=3D/usr/loc=
al/man --infodir=3D/usr/local/share/info/gcc12 --build=3Daarch64-portbld-fr=
eebsd14.0
> Thread model: posix
> Supported LTO compression algorithms: zlib
> gcc version 12.2.0 (FreeBSD Ports Collection)
>=20
>=20
>=20
>=20
> There was no such failure on fedora 36 via:
>=20
> # c++ -std=3Dc++20 -fmodules-ts -xc++-system-header memory
> # c++ -std=3Dc++20 -freport-bug -fmodules-ts -c gpp12_module_dynamic_poin=
ter_cast_failure.cpp
> #
>=20
> where:
>=20
> # c++ -v
> Using built-in specs.
> COLLECT_GCC=3Dc++
> COLLECT_LTO_WRAPPER=3D/usr/libexec/gcc/aarch64-redhat-linux/12/lto-wrappe=
r
> Target: aarch64-redhat-linux
> Configured with: ../configure --enable-bootstrap --enable-languages=3Dc,c=
++,fortran,objc,obj-c++,ada,go,lto --prefix=3D/usr --mandir=3D/usr/share/ma=
n --infodir=3D/usr/share/info --with-bugurl=3Dhttp://bugzilla.redhat.com/bu=
gzilla --enable-shared --enable-threads=3Dposix --enable-checking=3Drelease=
--enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libun=
wind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-=
gcc-major-version-only --enable-libstdcxx-backtrace --with-linker-hash-styl=
e=3Dgnu --enable-plugin --enable-initfini-array --with-isl=3D/builddir/buil=
d/BUILD/gcc-12.2.1-20220819/obj-aarch64-redhat-linux/isl-install --enable-g=
nu-indirect-function --build=3Daarch64-redhat-linux --with-build-config=3Db=
ootstrap-lto --enable-link-serialization=3D1
> Thread model: posix
> Supported LTO compression algorithms: zlib zstd
> gcc version 12.2.1 20220819 (Red Hat 12.2.1-1) (GCC)
As the maintainer of the gcc12 port, I should probably be the one who has
the answer for you. Unfortunately, as you know, I have taken maintainership
only recently and I do not know gcc well enough to solve this issue yet.
I suggest you to open an official bug report on
https://bugs.freebsd.org/bugzilla/ to keep track of this issue. Then I woul=
d
encourage you to configure the two gcc versions (the one on FreeBSD and the
one on Fedora) as similarly as possible (for example, you have --disable-mu=
ltilib
and --disable-bootstrap on FreeBSD, but --enable-multilib and
--with-build-config=3Dbootstrap-lto on Fedora), then test again.
If the FreeBSD version has the same configuation of the Fedora version but =
still
fails, then the problem might be upstream and a bug report upstream should =
be
opened; otherwise, it is possible that something is wrong with our port and=
we
should fix it.
Thanks,
Lorenzo Salvadore
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