https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103080
--- Comment #1 from hubicka at kam dot mff.cuni.cz --- The cdtor merging code is predating LTO - it is also used for collect2 path on targets w/o cdtor sections. I guess the DECL_UID compare is not very safe things to do since it depends on the tree merging decisions. We do not record declaration order to LTO time, however we have order of definitions which would be cgraph_node::get (f1)->order Honza
