1 files changed, 71 insertions, 0 deletions
diff --git a/include/ruby/backward.h b/include/ruby/backward.h
new file mode 100644
index 0000000000..e12f98ac47
--- /dev/null
+++ b/include/ruby/backward.h
@@ -0,0 +1,71 @@
+#ifndef RUBY_RUBY_BACKWARD_H                         /*-*-C++-*-vi:se ft=cpp:*/
+#define RUBY_RUBY_BACKWARD_H 1
+/**
+ * @author     Ruby developers <ruby-core@ruby-lang.org>
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ */
+#include "ruby/internal/value.h"
+#include "ruby/internal/interpreter.h"
+#include "ruby/backward/2/attributes.h"
+
+#define RBIMPL_ATTR_DEPRECATED_SINCE(ver) RBIMPL_ATTR_DEPRECATED(("since " #ver))
+#define RBIMPL_ATTR_DEPRECATED_INTERNAL(ver) RBIMPL_ATTR_DEPRECATED(("since "#ver", also internal"))
+
+/* 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)
+/* 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 */