[Bug c++/79672] ICE with -Wduplicated-branches -fopenmp

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79672

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
inchash::add_expr can't handle TREE_VECs so it seems the fix is to teach it to
deal with it.