projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| ba9703b0 | 1 | // run-pass |
| 94222f64 | 2 | // Test a ZST enum whose dicriminant is ~0i128. This caused an ICE when casting to an i32. |
| cdc7bbd5 | 3 | #![feature(bench_black_box)] |
| 1b1a35ee | 4 | use std::hint::black_box; |
| ba9703b0 XL |
5 | |
| 6 | #[derive(Copy, Clone)] | |
| 7 | enum Nums { | |
| 8 | NegOne = -1, | |
| 9 | } | |
| 10 | ||
| 11 | const NEG_ONE_I8: i8 = Nums::NegOne as i8; | |
| 12 | const NEG_ONE_I16: i16 = Nums::NegOne as i16; | |
| 13 | const NEG_ONE_I32: i32 = Nums::NegOne as i32; | |
| 14 | const NEG_ONE_I64: i64 = Nums::NegOne as i64; | |
| 15 | const NEG_ONE_I128: i128 = Nums::NegOne as i128; | |
| 16 | ||
| ba9703b0 XL |
17 | fn test_as_arg(n: Nums) { |
| 18 | assert_eq!(-1i8, n as i8); | |
| 19 | assert_eq!(-1i16, n as i16); | |
| 20 | assert_eq!(-1i32, n as i32); | |
| 21 | assert_eq!(-1i64, n as i64); | |
| 22 | assert_eq!(-1i128, n as i128); | |
| 23 | } | |
| 24 | ||
| 25 | fn main() { | |
| 26 | let kind = Nums::NegOne; | |
| 27 | assert_eq!(-1i8, kind as i8); | |
| 28 | assert_eq!(-1i16, kind as i16); | |
| 29 | assert_eq!(-1i32, kind as i32); | |
| 30 | assert_eq!(-1i64, kind as i64); | |
| 31 | assert_eq!(-1i128, kind as i128); | |
| 32 | ||
| 1b1a35ee XL |
33 | assert_eq!(-1i8, black_box(kind) as i8); |
| 34 | assert_eq!(-1i16, black_box(kind) as i16); | |
| 35 | assert_eq!(-1i32, black_box(kind) as i32); | |
| 36 | assert_eq!(-1i64, black_box(kind) as i64); | |
| 37 | assert_eq!(-1i128, black_box(kind) as i128); | |
| ba9703b0 XL |
38 | |
| 39 | test_as_arg(Nums::NegOne); | |
| 40 | ||
| 41 | assert_eq!(-1i8, NEG_ONE_I8); | |
| 42 | assert_eq!(-1i16, NEG_ONE_I16); | |
| 43 | assert_eq!(-1i32, NEG_ONE_I32); | |
| 44 | assert_eq!(-1i64, NEG_ONE_I64); | |
| 45 | assert_eq!(-1i128, NEG_ONE_I128); | |
| 46 | } |