| //@ run-pass |
| // Test a ZST enum whose dicriminant is ~0i128. This caused an ICE when casting to an i32. |
| use std::hint::black_box; |
| |
| #[derive(Copy, Clone)] |
| enum Nums { |
| NegOne = -1, |
| } |
| |
| const NEG_ONE_I8: i8 = Nums::NegOne as i8; |
| const NEG_ONE_I16: i16 = Nums::NegOne as i16; |
| const NEG_ONE_I32: i32 = Nums::NegOne as i32; |
| const NEG_ONE_I64: i64 = Nums::NegOne as i64; |
| const NEG_ONE_I128: i128 = Nums::NegOne as i128; |
| |
| fn test_as_arg(n: Nums) { |
| assert_eq!(-1i8, n as i8); |
| assert_eq!(-1i16, n as i16); |
| assert_eq!(-1i32, n as i32); |
| assert_eq!(-1i64, n as i64); |
| assert_eq!(-1i128, n as i128); |
| } |
| |
| fn main() { |
| let kind = Nums::NegOne; |
| assert_eq!(-1i8, kind as i8); |
| assert_eq!(-1i16, kind as i16); |
| assert_eq!(-1i32, kind as i32); |
| assert_eq!(-1i64, kind as i64); |
| assert_eq!(-1i128, kind as i128); |
| |
| assert_eq!(-1i8, black_box(kind) as i8); |
| assert_eq!(-1i16, black_box(kind) as i16); |
| assert_eq!(-1i32, black_box(kind) as i32); |
| assert_eq!(-1i64, black_box(kind) as i64); |
| assert_eq!(-1i128, black_box(kind) as i128); |
| |
| test_as_arg(Nums::NegOne); |
| |
| assert_eq!(-1i8, NEG_ONE_I8); |
| assert_eq!(-1i16, NEG_ONE_I16); |
| assert_eq!(-1i32, NEG_ONE_I32); |
| assert_eq!(-1i64, NEG_ONE_I64); |
| assert_eq!(-1i128, NEG_ONE_I128); |
| } |
