[boost] boost::asio 1.43 regression (canceling read operation doens't trigger operation_aborted)

Hello, I had working 1.42 code that suddenly stopped working with 1.43. With a bit of investigation I found out that canceling an async_read operation on a serial port when a timer was fired didn't trigger the expected boost::asio::error::operation_aborted like it used to do. Here is a testcase: http://codepad.org/XnLwybDl The idea is to implement a "read with timeout" functionality on a serial port. Btw, is this the correct way to implement this? Is there a simpler way to read from a serial port with a timeout? Thanks, Philippe