ld: cannot get section contents - auto-import exception (bit size 12)

[lazka]

Building our toolchain regression tests shows some linker warnings/errros. The build runs through though, so they are not fatal:

https://github.com/msys2/msys2-tests/actions/runs/10761539082/job/29840844647#step:7:192

/opt/lib/gcc/aarch64-w64-mingw32/15.0.0/../../../../aarch64-w64-mingw32/bin/ld: tests/call_once.exe.p/call_once.cpp.obj: in function `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)':
/opt/lib/gcc/aarch64-w64-mingw32/15.0.0/include/c++/ostream:673: cannot get section contents - auto-import exception (bit size 21)
/opt/lib/gcc/aarch64-w64-mingw32/15.0.0/../../../../aarch64-w64-mingw32/bin/ld: /opt/lib/gcc/aarch64-w64-mingw32/15.0.0/include/c++/ostream:673: cannot get section contents - auto-import exception (bit size 12)
/opt/lib/gcc/aarch64-w64-mingw32/15.0.0/../../../../aarch64-w64-mingw32/bin/ld: tests/call_once.exe.p/call_once.cpp.obj: in function `_Prepare_execution<std::call_once<main()::<lambda()> >(once_flag&, main()::<lambda()>&&)::<lambda()> >':
/opt/lib/gcc/aarch64-w64-mingw32/15.0.0/include/c++/mutex:843: cannot get section contents - auto-import exception (bit size 21)
/opt/lib/gcc/aarch64-w64-mingw32/15.0.0/../../../../aarch64-w64-mingw32/bin/ld: /opt/lib/gcc/aarch64-w64-mingw32/15.0.0/include/c++/mutex:843: cannot get section contents - auto-import exception (bit size 12)
/opt/lib/gcc/aarch64-w64-mingw32/15.0.0/../../../../aarch64-w64-mingw32/bin/ld: /opt/lib/gcc/aarch64-w64-mingw32/15.0.0/include/c++/mutex:845: cannot get section contents - auto-import exception (bit size 21)
/opt/lib/gcc/aarch64-w64-mingw32/15.0.0/../../../../aarch64-w64-mingw32/bin/ld: /opt/lib/gcc/aarch64-w64-mingw32/15.0.0/include/c++/mutex:845: cannot get section contents - auto-import exception (bit size 12)

This is the script for invoking the test: https://github.com/msys2/msys2-tests/blob/787806b2a0af9fc1da09d268bf985f1307075f67/toolchain/test.sh#L12-L16

I don't know if that is causing any runtime issues as I don't have a way to run them.