38 lines
1.1 KiB
Rust
38 lines
1.1 KiB
Rust
#![allow(clippy::useless_vec)]
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#[warn(clippy::iterator_step_by_zero)]
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fn main() {
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let _ = vec!["A", "B", "B"].iter().step_by(0);
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//~^ ERROR: `Iterator::step_by(0)` will panic at runtime
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//~| NOTE: `-D clippy::iterator-step-by-zero` implied by `-D warnings`
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let _ = "XXX".chars().step_by(0);
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//~^ ERROR: `Iterator::step_by(0)` will panic at runtime
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let _ = (0..1).step_by(0);
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//~^ ERROR: `Iterator::step_by(0)` will panic at runtime
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// No error, not an iterator.
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let y = NotIterator;
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y.step_by(0);
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// No warning for non-zero step
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let _ = (0..1).step_by(1);
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let _ = (1..).step_by(0);
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//~^ ERROR: `Iterator::step_by(0)` will panic at runtime
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let _ = (1..=2).step_by(0);
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//~^ ERROR: `Iterator::step_by(0)` will panic at runtime
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let x = 0..1;
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let _ = x.step_by(0);
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//~^ ERROR: `Iterator::step_by(0)` will panic at runtime
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// check const eval
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let v1 = vec![1, 2, 3];
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let _ = v1.iter().step_by(2 / 3);
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//~^ ERROR: `Iterator::step_by(0)` will panic at runtime
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}
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struct NotIterator;
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impl NotIterator {
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fn step_by(&self, _: u32) {}
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}
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