https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89697
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Martin Jambor from comment #1) > This is because we set TREE_NO_WARNING in generate_subtree_copies. I'll > remove it, see what breaks and take it from there. Did you ever see what's the result of this?