[Bug libstdc++/110807] [13 Regression] Copy list initialisation of a vector<bool> raises a warning with -O2

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110807

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The new test fails with -m32 -D_GLIBCXX_USE_CXX11_ABI=0

I give up.