mirror of https://github.com/rust-lang/rust
37 lines
794 B
Rust
37 lines
794 B
Rust
//@ run-pass
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#![allow(unused_must_use)]
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#![allow(dead_code)]
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#![allow(unused_mut)]
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#![allow(unused_variables)]
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// Regression test for type inference failure around shifting. In this
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// case, the iteration yields an isize, but we hadn't run the full type
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// propagation yet, and so we just saw a type variable, yielding an
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// error.
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//@ pretty-expanded FIXME #23616
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trait IntoIterator {
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type Iter: Iterator;
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fn into_iter(self) -> Self::Iter;
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}
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impl<I> IntoIterator for I where I: Iterator {
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type Iter = I;
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fn into_iter(self) -> I {
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self
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}
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}
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fn desugared_for_loop_bad(byte: u8) -> u8 {
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let mut result = 0;
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let mut x = IntoIterator::into_iter(0..8);
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let mut y = Iterator::next(&mut x);
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let mut z = y.unwrap();
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byte >> z;
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1
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}
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fn main() {}
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