+/* Applied to dev-5.9 as 25854, integrated to maint-5.8 as 28160 */
+#ifndef VMG_COMPAT_ARRAY_PUSH_NOLEN
+# if VMG_HAS_PERL_MAINT(5, 8, 9, 28160) || VMG_HAS_PERL_MAINT(5, 9, 3, 25854) || VMG_HAS_PERL(5, 10, 0)
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 1
+# else
+# define VMG_COMPAT_ARRAY_PUSH_NOLEN 0
+# endif
+#endif
+
+/* Applied to dev-5.11 as 34908 */
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 34908)
+# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 1
+#else
+# define VMG_COMPAT_ARRAY_UNSHIFT_NOLEN_VOID 0
+#endif
+
+/* Applied to dev-5.9 as 31473 (see #43357), integrated to maint-5.8 as 32542 */
+#if VMG_HAS_PERL_MAINT(5, 8, 9, 32542) || VMG_HAS_PERL_MAINT(5, 9, 5, 31473) || VMG_HAS_PERL(5, 10, 0)
+# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 1
+#else
+# define VMG_COMPAT_ARRAY_UNDEF_CLEAR 0
+#endif
+
+#if VMG_HAS_PERL_MAINT(5, 11, 0, 32969)
+# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 1
+#else
+# define VMG_COMPAT_SCALAR_LENGTH_NOLEN 0
+#endif
+