1 files changed, 49 insertions, 3 deletions
diff --git a/include/ruby/backward.h b/include/ruby/backward.h
index f804c2c36e..e12f98ac47 100644
--- a/include/ruby/backward.h
+++ b/include/ruby/backward.h
@@ -13,13 +13,59 @@
 
 #define RBIMPL_ATTR_DEPRECATED_SINCE(ver) RBIMPL_ATTR_DEPRECATED(("since " #ver))
 #define RBIMPL_ATTR_DEPRECATED_INTERNAL(ver) RBIMPL_ATTR_DEPRECATED(("since "#ver", also internal"))
-#define RBIMPL_ATTR_DEPRECATED_INTERNAL_ONLY() RBIMPL_ATTR_DEPRECATED(("only for internal use"))
 
-RBIMPL_ATTR_DEPRECATED_INTERNAL_ONLY() void rb_clear_constant_cache(void);
+/* eval.c */
+RBIMPL_ATTR_DEPRECATED_SINCE(2.2) void rb_disable_super();
+RBIMPL_ATTR_DEPRECATED_SINCE(2.2) void rb_enable_super();
+
+/* hash.c */
+RBIMPL_ATTR_DEPRECATED_SINCE(2.2) void rb_hash_iter_lev();
+RBIMPL_ATTR_DEPRECATED_SINCE(2.2) void rb_hash_ifnone();
+
+/* string.c */
+RBIMPL_ATTR_DEPRECATED_SINCE(2.2) void rb_str_associate();
+RBIMPL_ATTR_DEPRECATED_SINCE(2.2) void rb_str_associated();
+
+/* variable.c */
+RBIMPL_ATTR_DEPRECATED_SINCE(2.5) void rb_autoload();
+
+/* eval.c */
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.6) void rb_frozen_class_p();
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.7) void rb_exec_end_proc();
+
+/* error.c */
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.3) void rb_compile_error();
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.3) void rb_compile_error_with_enc();
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.3) void rb_compile_error_append();
+
+/* gc.c */
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.7) void rb_gc_call_finalizer_at_exit();
+
+/* signal.c */
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.7) void rb_trap_exit();
+
+/* struct.c */
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.4) void rb_struct_ptr();
+
+/* thread.c */
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.7) void rb_clear_trace_func();
+
+/* variable.c */
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.7) void rb_generic_ivar_table();
+RBIMPL_ATTR_DEPRECATED_INTERNAL(2.6) NORETURN(VALUE rb_mod_const_missing(VALUE, VALUE));
 
 /* from version.c */
 #if defined(RUBY_SHOW_COPYRIGHT_TO_DIE) && !!(RUBY_SHOW_COPYRIGHT_TO_DIE+0)
-# error RUBY_SHOW_COPYRIGHT_TO_DIE is deprecated
+/* for source code backward compatibility */
+RBIMPL_ATTR_DEPRECATED_SINCE(2.4)
+static inline int
+ruby_show_copyright_to_die(int exitcode)
+{
+    ruby_show_copyright();
+    return exitcode;
+}
+#define ruby_show_copyright() /* defer EXIT_SUCCESS */ \
+    (exit(ruby_show_copyright_to_die(EXIT_SUCCESS)))
 #endif
 
 #endif /* RUBY_RUBY_BACKWARD_H */