mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-21 23:21:57 +00:00
23a38c4170
Uses type information so it can detect non-literal ranges as well (Range or RangeFrom -- the other range types don't have step_by).
24 lines
559 B
Rust
24 lines
559 B
Rust
#![feature(step_by)]
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#![feature(plugin)]
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#![plugin(clippy)]
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struct NotARange;
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impl NotARange {
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fn step_by(&self, _: u32) {}
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}
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#[deny(range_step_by_zero)]
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fn main() {
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(0..1).step_by(0); //~ERROR Range::step_by(0) produces an infinite iterator
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// No warning for non-zero step
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(0..1).step_by(1);
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(1..).step_by(0); //~ERROR Range::step_by(0) produces an infinite iterator
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let x = 0..1;
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x.step_by(0); //~ERROR Range::step_by(0) produces an infinite iterator
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// No error, not a range.
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let y = NotARange;
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y.step_by(0);
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}
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