[Bug c/108880] [11/12/13 Regression] slow compilation with "-fsanitize=undefined"

[mpolacek at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108880

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
FWIW, -fsanitize=signed-integer-overflow,shift seems to be enough to trigger
the runaway compilation.