Most compiler bugs are situations where the compiler allows stuff it should not or generates incorrect code.

> "being too limited for what I'm trying to do" also sounds like a bug. So this reads to me as "aside from when they are wrong, compilers are not wrong" ;)

Most every compiler is "too limited" to do some things, that is a big reason why dynamically typed languages are still a thing. For instance I can't tell Java to just take any object with an attribute "foo" despite it being the only thing I want to use (and I don't even care about its type) — bypassing the compiler via reflection aside. Do you think that's a bug in the compiler?