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

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

> [/tmp] martin@supremacy > atf-run
> atf-run: Undefined symbol "_ZNSt15basic_streambufIcSt11char_traitsIcEE7seekoffElSt12_Ios_SeekdirSt13_Ios_Openmode" (symnum = 484)
> [/tmp] martin@supremacy > echo "_ZNSt15basic_streambufIcSt11char_traitsIcEE7seekoffElSt12_Ios_SeekdirSt13_Ios_Openmode" | c++filt
> _ZNSt15basic_streambufIcSt11char_traitsIcEE7seekoffElSt12_Ios_SeekdirSt13_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_traitsIcEE7seekoffElSt12_Ios_SeekdirSt13_Ios_Openmode | c++filt
std::basic_streambuf<char, std::char_traits<char> >::seekoff(long, std::_Ios_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.