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// This is a regression test for issue rust-lang/rust#69841, which exposed an
// LLVM bug which needed a fix to be backported.
// run-pass
// no-system-llvm
fn main() {
let buffer = [49u8, 10];
let mut a : u64 = 0;
'read: loop {
for c in &buffer {
match c {
48..=57 => {
a*= 10;
a+= *c as u64 - 48;
}
10 => {
break 'read;
}
_ => {
unsafe { std::hint::unreachable_unchecked() };
}
}
}
}
if a == 1 {
println!("What did you expect?");
} else {
panic!("this should be unreachable.");
}
}
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