Most of the currently open ones may be nightly-only and/or mostly theoretical, but there was recently a bad borrow checker bug for example: https://blog.rust-l

Most of the currently open ones may be nightly-only and/or mostly theoretical, but there was recently a bad borrow checker bug for example: https://blog.rust-lang.org/2020/02/27/Rust-1.41.1.html#a-soundness-hole-in-checking-static-items https://blog.rust-lang.org/2020/02/27/Rust-1.41.1.html#a-sou... I don't think soundness/security flaws due to compiler bugs are common, but they qualitatively can happen. I think that might be getting forgotten when folks are puzzled about the idea of memory safety bugs in memory-safe languages.