https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61831
--- Comment #40 from Mikael Morin <mikael at gcc dot gnu.org> --- (In reply to Mikael Morin from comment #39) > A function will do a deep copy, so I think the only problematic cases are > EXPR_ARRAY, and maybe EXPR_STRUCTURE. EXPR_STRUCTURE deep-copy variable components, and simple-copy non-variables.