Bug#893517: Installation of gcc-8 made clang-6 unusable.

[Roman Lebedev]

reassign 893517 gcc-8
found 893517 8-20180319-1
forwarded 893517 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85040
forwarded 893517 https://bugs.llvm.org/show_bug.cgi?id=36869
notfound clang-6.0 1:6.0-1
thanks.

On Mon, Mar 19, 2018 at 7:30 PM, Roman Lebedev <lebedev.ri at gmail.com> wrote:
> Package: clang-6.0
> Version: 1:6.0-1
> Severity: serious
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> $ cat test.cpp
> #include <ostream>
> $ clang++-6.0 -c test.cpp
> In file included from test.cpp:1:
> In file included from /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/ostream:38:
> In file included from /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/ios:42:
> In file included from /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/ios_base.h:41:
> In file included from /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/locale_classes.h:40:
> In file included from /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/string:48:
> /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/stl_function.h:545:9: error: redefinition of '__not_overloaded<_Tp, _Up>'
>         struct __not_overloaded<_Tp, _Up> : __not_overloaded2<_Tp, _Up> { };
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/stl_function.h:531:9: note: previous definition is here
>         struct __not_overloaded<_Tp, _Up, __void_t<
>                ^
> /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/stl_function.h:608:9: error: redefinition of '__not_overloaded<_Tp, _Up>'
>         struct __not_overloaded<_Tp, _Up> : __not_overloaded2<_Tp, _Up> { };
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/stl_function.h:594:9: note: previous definition is here
>         struct __not_overloaded<_Tp, _Up, __void_t<
>                ^
> /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/stl_function.h:671:9: error: redefinition of '__not_overloaded<_Tp, _Up>'
>         struct __not_overloaded<_Tp, _Up> : __not_overloaded2<_Tp, _Up> { };
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/stl_function.h:657:9: note: previous definition is here
>         struct __not_overloaded<_Tp, _Up, __void_t<
>                ^
> /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/stl_function.h:734:9: error: redefinition of '__not_overloaded<_Tp, _Up>'
>         struct __not_overloaded<_Tp, _Up> : __not_overloaded2<_Tp, _Up> { };
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/bin/../lib64/gcc/x86_64-linux-gnu/8.0.1/../../../../include/c++/8.0.1/bits/stl_function.h:720:9: note: previous definition is here
>         struct __not_overloaded<_Tp, _Up, __void_t<
>                ^
> 4 errors generated.
>
>
> Strangely, clang-5 still works.
> But clang-7 fails too.
>
> - -- System Information:
> Debian Release: buster/sid
>   APT prefers unstable
>   APT policy: (990, 'unstable'), (500, 'unstable-debug'), (1, 'experimental-debug'), (1, 'experimental')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 4.15.0-1-amd64 (SMP w/8 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
>
> Versions of packages clang-6.0 depends on:
> ii  binutils                 2.30-8
> ii  libc6                    2.27-2
> ii  libc6-dev                2.27-2
> ii  libclang-common-6.0-dev  1:6.0-1
> ii  libclang1-6.0            1:6.0-1
> ii  libgcc-7-dev             7.3.0-12
> ii  libgcc1                  1:8-20180319-1
> ii  libjsoncpp1              1.7.4-3
> ii  libllvm6.0               1:6.0-1
> ii  libobjc-7-dev            7.3.0-12
> ii  libstdc++-7-dev          7.3.0-12
> ii  libstdc++6               8-20180319-1
>
> Versions of packages clang-6.0 recommends:
> ii  libomp-dev    6.0-1
> ii  llvm-6.0-dev  1:6.0-1
> ii  python        2.7.14-4
>
> Versions of packages clang-6.0 suggests:
> pn  clang-6.0-doc  <none>
> pn  gnustep        <none>
> pn  gnustep-devel  <none>
>
> - -- no debconf information
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