diff options
Diffstat (limited to 'src/test/ui/run-pass/packed/packed-struct-generic-layout.rs')
| -rw-r--r-- | src/test/ui/run-pass/packed/packed-struct-generic-layout.rs | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/test/ui/run-pass/packed/packed-struct-generic-layout.rs b/src/test/ui/run-pass/packed/packed-struct-generic-layout.rs new file mode 100644 index 00000000000..b962a5c7933 --- /dev/null +++ b/src/test/ui/run-pass/packed/packed-struct-generic-layout.rs @@ -0,0 +1,38 @@ +// Copyright 2013 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. + + +use std::mem; + +#[repr(packed)] +struct S<T, S> { + a: T, + b: u8, + c: S +} + +pub fn main() { + unsafe { + let s = S { a: 0xff_ff_ff_ffu32, b: 1, c: 0xaa_aa_aa_aa as i32 }; + let transd : [u8; 9] = mem::transmute(s); + // Don't worry about endianness, the numbers are palindromic. + assert_eq!(transd, + [0xff, 0xff, 0xff, 0xff, + 1, + 0xaa, 0xaa, 0xaa, 0xaa]); + + + let s = S { a: 1u8, b: 2u8, c: 0b10000001_10000001 as i16}; + let transd : [u8; 4] = mem::transmute(s); + // Again, no endianness problems. + assert_eq!(transd, + [1, 2, 0b10000001, 0b10000001]); + } +} |
