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| -rw-r--r-- | src/test/run-pass/ctfe/bswap-const.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/run-pass/ctfe/bswap-const.rs b/src/test/run-pass/ctfe/bswap-const.rs new file mode 100644 index 00000000000..b951a9b72b1 --- /dev/null +++ b/src/test/run-pass/ctfe/bswap-const.rs @@ -0,0 +1,23 @@ +// Copyright 2017 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +#![feature(core_intrinsics)] + +use std::intrinsics; + +const SWAPPED_U8: u8 = unsafe { intrinsics::bswap(0x12_u8) }; +const SWAPPED_U16: u16 = unsafe { intrinsics::bswap(0x12_34_u16) }; +const SWAPPED_I32: i32 = unsafe { intrinsics::bswap(0x12_34_56_78_i32) }; + +fn main() { + assert_eq!(SWAPPED_U8, 0x12); + assert_eq!(SWAPPED_U16, 0x34_12); + assert_eq!(SWAPPED_I32, 0x78_56_34_12); +} |