r260553 added a number of mangled C++ symbols to Version.map inside of
an existing `extern "C++"` block.
ld.bfd 2.17.50 treats `extern "C++"` permissively and will match both
mangled and demangled symbols against the strings in the version map
block. ld.lld interprets `extern "C++"` strictly, and matches only
demangled symbols.
I believe lld's behaviour is correct. Contemporary versions of ld.bfd
also behave as lld does, so move the mangled symbols out of the
`extern "C++"` block.
PR: 225128, 185663
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
When trying to build world for MIPS64 with clang I was getting
linker errors because of a missing reference to std::get_new_handler().
It turns out std::get_new_handler() was not listed in Version.map so it was
marked as a local symbol in libcxxrt.so.
Reviewed by: theraven, brooks (mentor), emaste
Approved by: trasz
Obtained from: CheriBSD
Differential Revision: https://reviews.freebsd.org/D11925
"C++"', otherwise ld refuses to make the symbols global in the final
library. This causes the __int128-related symbols to go missing when
the library is stripped during installation.
Helpful hints: emaste
MFC after: 2 weeks
X-MFC-With: r314061
the same CXXABI verions as recent libstdc++.
Note that __int128 types are only available on arches where long long is
128 bit wide.
Noticed by: harti
MFC after: 2 weeks
r260553 added missing C++ typinfos to libcxxrt's version script.
It appears that a number of duplicate mangled symbols were added due to
a cut and paste error. Switch the second instances to _ZTS*,
typeinfo name for *.
Found by lld, which produces an error or warning for duplicate symbols.
Reviewed by: dim
Approved by: re (gjb)
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D7011
This symbol can sometimes be emitted by clang++, and was not yet
exported from libcxxrt. Attempt to be compatible with libsupc++ by
using the same CXXABI_1.3.6 symbol version.
Reported by: yuri@rawbw.com
PR: 200863
Reviewed by: emaste
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D2850
It is required for use with newer g++49
Differential Revision: https://reviews.freebsd.org/D982
Reviewed by: theraven
Approved by: theraven
MFC after: 3 weeks
a few duplicates. This should fix building world with -stdlib=libc++
after r246028.
Submitted by: Yamaya Takashi <yamayan@kbh.biglobe.ne.jp>
MFC after: 1 week
X-MFC-With: r246028
that were causing the runtime and STL libraries to see different versions of
various classes and functions when libstdc++ is used as a filter.
Note: This changes the ABI for libcxxrt, but libcxxrt is currently only in
-STABLE for testing and is not used by anything unless explicitly enabled by
the end user. No default compiler configurations use it.
libc++ will need to be recompiled after this change. make buildworld will do
this automatically, but make in lib/libc++ will not necessarily work unless the
new libcxxrt is installed first.
PR: kern/171610, stand/175453
Reviewed by: kib
MFC after: 1 week
