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Crash if invariant is broken

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Henrik Hørlück Berg 2023-09-15 14:46:53 +02:00
parent 5407d0b785
commit 6ee81c0f15
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1 changed files with 4 additions and 2 deletions
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6
fish-rust/src/complete.rs
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@ -174,8 +174,10 @@ impl CompletionReceiver {
/// \return a new, empty receiver whose limit is our remaining capacity.
/// This is useful for e.g. recursive calls when you want to act on the result before adding it.
pub fn subreceiver(&self) -> Self {
// XXX: this should not need to be saturating, we have a faulty invariant
let remaining_capacity = self.limit.saturating_sub(self.completions.len());
let remaining_capacity = self
.limit
.checked_sub(self.completions.len())
.expect("length should never be larger than limit");
Self::new(remaining_capacity)
}
}