a94f5934cd
Note that attributes on expressions are still unstable and are behind the `stmt_expr_attributes` flag. cc [Tracking issue](https://github.com/rust-lang/rust/issues/15701)
41 lines
1.4 KiB
Rust
41 lines
1.4 KiB
Rust
// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#[deny(const_err)]
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fn main() {
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#[cfg(target_pointer_width = "32")]
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const I: isize = -2147483648isize;
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#[cfg(target_pointer_width = "64")]
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const I: isize = -9223372036854775808isize;
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assert_eq!(::std::i32::MIN as u64, 0xffffffff80000000);
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assert_eq!(-2147483648isize as u64, 0xffffffff80000000);
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assert_eq!(::std::i64::MIN as u64, 0x8000000000000000);
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#[cfg(target_pointer_width = "64")]
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assert_eq!(-9223372036854775808isize as u64, 0x8000000000000000);
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#[cfg(target_pointer_width = "32")]
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assert_eq!(-9223372036854775808isize as u64, 0);
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const J: usize = ::std::i32::MAX as usize;
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const K: usize = -1i32 as u32 as usize;
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const L: usize = ::std::i32::MIN as usize;
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const M: usize = ::std::i64::MIN as usize;
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match 5 {
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J => {},
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K => {},
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L => {},
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M => {},
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_ => {}
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}
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match 5 {
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I => {},
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_ => {}
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}
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}
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