ROOT fails to compile on ubuntu 22.04 gcc-9 (and 10 ?) due to libstdc++ bug

[KrisThielemans]

error is

While building module 'Core':
While building module 'std' imported from input_line_1:1:
In file included from <module-includes>:76:
/usr/include/c++/9/valarray:1214:5: error: exception specification in declaration does not match previous declaration
    begin(valarray<_Tp>& __va) noexcept
    ^
/usr/include/c++/9/bits/range_access.h:104:31: note: previous declaration is here
  template<typename _Tp> _Tp* begin(valarray<_Tp>&);

https://root-forum.cern.ch/t/build-root-6-26-04-module-core-and-std-problem-ubuntu-22-04/50742/18
says this is a libstdc++ bug fixed in fixed in https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=2b2d97fc545635a0f6aa9c9ee3b017394bc494bf.

Possibly it needs gcc >= 10.4.0-3