bjoernager/rust
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Adjust borrow checker algorithm to address #4856 unsoundness,

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and then adjust code to match. rs=unsound (will review post-landing)
This commit is contained in:
Niko Matsakis 2013-02-08 22:21:45 -08:00
parent 91c59f5c9a
commit ab2534974c
25 changed files with 1046 additions and 575 deletions
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6
src/libstd/priority_queue.rs
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@ -81,7 +81,8 @@ impl <T: Ord> PriorityQueue<T> {
/// Push an item onto the queue
fn push(&mut self, item: T) {
self.data.push(item);
self.siftup(0, self.len() - 1);
let new_len = self.len() - 1;
self.siftup(0, new_len);
}
/// Optimized version of a push followed by a pop
@ -179,7 +180,8 @@ impl <T: Ord> PriorityQueue<T> {
}
priv fn siftdown(&mut self, pos: uint) {
self.siftdown_range(pos, self.len());
let len = self.len();
self.siftdown_range(pos, len);
}
}