// run-pass #![allow(non_upper_case_globals)] #![allow(dead_code)] /*! * On x86_64-linux-gnu and possibly other platforms, structs get 8-byte "preferred" alignment, * but their "ABI" alignment (i.e., what actually matters for data layout) is the largest alignment * of any field. (Also, `u64` has 8-byte ABI alignment; this is not always true). * * On such platforms, if monomorphize uses the "preferred" alignment, then it will unify * `A` and `B`, even though `S` and `S` have the field `t` at different offsets, * and apply the wrong instance of the method `unwrap`. */ #[derive(Copy, Clone)] struct S { i:u8, t:T } impl S { fn unwrap(self) -> T { self.t } } #[derive(Copy, Clone, PartialEq, Debug)] struct A((u32, u32)); #[derive(Copy, Clone, PartialEq, Debug)] struct B(u64); pub fn main() { static Ca: S = S { i: 0, t: A((13, 104)) }; static Cb: S = S { i: 0, t: B(31337) }; assert_eq!(Ca.unwrap(), A((13, 104))); assert_eq!(Cb.unwrap(), B(31337)); }