Is a function-try-block equivalent to a try-catch encompassing whole function?

I'm running a boost::thread which is interrupted from somewhere else in my program.

auto my_thread = boost::thread(&threadedFunction, this);

Is using a function-try-block like this

void threadedFunction() try {
  // do stuff
} catch (boost::thread_interrupted &) {
  // handle error
}

equivalent to using a try-catch block encompassing the entire function?

void threadedFunction() {
  try {
    // do stuff
  } catch (boost::thread_interrupted &) {
    // handle error
  }
}

They may not be equivalent, since my_thread can be interrupted before the try block is entered, and in that case, the program would crash. That being said, I'm not sure if this is possible.

Are both chunks of code equivalent?