blob: 4c749a150c091f5159defd11c28594e7cd22633c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
// EMIT_MIR issue_75439.foo.MatchBranchSimplification.diff
// ignore-endian-big
use std::mem::transmute;
pub fn foo(bytes: [u8; 16]) -> Option<[u8; 4]> {
// big endian `u32`s
let dwords: [u32; 4] = unsafe { transmute(bytes) };
const FF: u32 = 0x0000_ffff_u32.to_be();
if let [0, 0, 0 | FF, ip] = dwords {
Some(unsafe { transmute(ip) })
} else {
None
}
}
fn main() {
let _ = foo([0; 16]);
}
|
