re: toolchain/56734: something wrong with libstdc++ (symbol version issue?)

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR toolchain/56734; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: toolchain-manager%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
    netbsd-bugs%netbsd.org@localhost
Subject: re: toolchain/56734: something wrong with libstdc++ (symbol version issue?)
Date: Tue, 01 Mar 2022 06:26:03 +1100

 > [/tmp] martin@supremacy > atf-run
 > atf-run: Undefined symbol "_ZNSt15basic_streambufIcSt11char_traitsIcEE7s=
 eekoffElSt12_Ios_SeekdirSt13_Ios_Openmode" (symnum =3D 484)
 > [/tmp] martin@supremacy > echo "_ZNSt15basic_streambufIcSt11char_traitsI=
 cEE7seekoffElSt12_Ios_SeekdirSt13_Ios_Openmode" | c++filt
 > _ZNSt15basic_streambufIcSt11char_traitsIcEE7seekoffElSt12_Ios_SeekdirSt1=
 3_Ios_Openmode
 > std::basic_streambuf<char, std::char_traits<char> >::seekoff(long, std::=
 _Ios_Seekdir, std::_Ios_Openmode)
 > [/tmp] martin@supremacy > nm -C /usr/lib/libstdc++.so.9.0 | fgrep basic_=
 streambuf | fgrep ::seekoff
 > 00000000001492c0 W std::basic_streambuf<char, std::char_traits<char> >::=
 seekoff(long, std::_Ios_Seekdir, std::_Ios_Openmode)
 > 00000000001493c0 W std::basic_streambuf<wchar_t, std::char_traits<wchar_=
 t> >::seekoff(long, std::_Ios_Seekdir, std::_Ios_Openmode)
 > [/tmp] martin@supremacy >
 
 i suspect some weird bad build issue.  i don't see this on my
 4 weeks ago mips64eb build:
 
 transitions ~> echo _ZNSt15basic_streambufIcSt11char_traitsIcEE7seekoffElS=
 t12_Ios_SeekdirSt13_Ios_Openmode | c++filt
 std::basic_streambuf<char, std::char_traits<char> >::seekoff(long, std::_I=
 os_Seekdir, std::_Ios_Openmode)
 transitions ~> l /usr/bin/c++filt
 -r-xr-xr-x  1 root  wheel  198832 Jan 28 01:13 /usr/bin/c++filt*
 
 ie, the demangler seems busted..
 
 i'll update my er4 and see what happens.
 
 
 .mrg.