Make sure that casting a ptr-integer down to u8 makes it unusable
Make sure that casting a ptr-integer down to u8 makes it unusable

GBGamer/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,rust-lang/miri,aidancully/rust,graydon/rust,rust-lang/miri,GBGamer/rust,GBGamer/rust,GBGamer/rust,rust-lang/miri,aidancully/rust,graydon/rust,rust-lang/miri,tsion/miri,aidancully/rust,GBGamer/rust,graydon/rust,graydon/rust,GBGamer/rust