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// compile-flags: -O
// min-llvm-version: 16
#![crate_type = "lib"]
#[no_mangle]
pub fn test() -> u32 {
// CHECK-LABEL: @test(
// CHECK: ret i32 13
let s = [1, 2, 3, 4, 5, 6, 7];
let mut iter = s.iter();
let mut sum = 0;
while let Some(_) = iter.next() {
sum += iter.next().map_or(1, |&x| x)
}
sum
}
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