https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104213
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Try:
val = build2 (MODIFY_EXPR, TREE_TYPE (val),
DECL_RESULT (delete_dtor), val);
tree stmt = build_stmt (0, RETURN_EXPR, val);
suppress_warning (stmt, OPT_Wuse_after_free);
add_stmt (stmt);
That is do it for the RETURN_EXPR instead of the MODIFY_EXPR. It might be
saved. Otherwise the gimplification of RETURN_EXPR to GIMPLE_RETURN needs to
save it around.
