updated for version 7.3.1071
Problem: New regexp engine: backreferences don't work correctly.
Solution: Add every possible start/end position on the state stack.
diff --git a/src/testdir/test64.ok b/src/testdir/test64.ok
index 7b81853..382d6af 100644
--- a/src/testdir/test64.ok
+++ b/src/testdir/test64.ok
@@ -716,6 +716,9 @@
OK 0 - \(\i\+\) \1
OK 1 - \(\i\+\) \1
OK 2 - \(\i\+\) \1
+OK 0 - \(\i\+\) \1
+OK 1 - \(\i\+\) \1
+OK 2 - \(\i\+\) \1
OK 0 - \(a\)\(b\)\(c\)\(dd\)\(e\)\(f\)\(g\)\(h\)\(i\)\1\2\3\4\5\6\7\8\9
OK 1 - \(a\)\(b\)\(c\)\(dd\)\(e\)\(f\)\(g\)\(h\)\(i\)\1\2\3\4\5\6\7\8\9
OK 2 - \(a\)\(b\)\(c\)\(dd\)\(e\)\(f\)\(g\)\(h\)\(i\)\1\2\3\4\5\6\7\8\9