https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117937 --- Comment #1 from eczbek.void at gmail dot com --- Another ICE if `f()` is called without arguments: https://godbolt.org/z/aba3M7h9W internal compiler error: tree check: accessed elt 1 of 'tree_vec' with 0 elts in make_pack_index