[Bug c++/119954] "a < b < c < d < ..." taking long time to process to generate error message

[mcccs at gmx dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119954

--- Comment #3 from mcccs at gmx dot com ---
Bisection found r9-3807-g5d9a0e3b99e31a