Exit Interviews / Surveys When Leaving a Shitty Job

Let's say that you are leaving a company primarily because you're boss and co-workers are shitty people and miserable to work with. For instance, you asked your boss what was needed of you to be promoted, and when you completed these goals / tasks, he changed the criteria and wouldn't promote you. Other crap includes co-workers and manager leaving early when there is still a bunch of work to do, leaving a select few to stay late or on weekends to finish.

If you were leaving this job and given the opportunity to provide feedback through an exit interview or survey, would you be honest about everything or just not say anything at all? I would be very tempted to be honest and just bash the people I worked with, but I'd also be hesitant because I wouldn't want to burn bridges in case my boss found out that I gave him a bad review.

What would you do?