Ask HN: How Compilers Are Stable?

There is a lot of compilers for a lot of languages. I don't remember having trouble using any of the compilers I've used. On the other hand, (almost) every other software I've used have crashed one time or more. My question is : how compiler devellopers do for making bug free compiler ? How is it possible ? is there anything that give a proof that a compiler is stable ? In other words, is it possible to have a bug in a software produced a by a compiler flaw rather than by a bad coding ?