Ticket #4654: patchfile.patch

detail/restrict_impl.hpp

@@ -191 +191 @@
         }
         if (next < beg_ || (end_ != -1 && next >= end_))
             boost::throw_exception(bad_seek());
-        pos_ = this->component().seek(dev, next, BOOST_IOS::cur);
+        pos_ = this->component().seek(dev, next - pos_, BOOST_IOS::cur);
         return offset_to_position(pos_ - beg_);
     }