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//! This is a pathological pattern in which opportunities to merge
//! adjacent identical items in the RangeMap are not properly detected
//! because `RangeMap::iter_mut` is never called on overlapping ranges
//! and thus never merges previously split ranges. This does not produce any
//! additional cost for access operations, but it makes the job of the Tree Borrows
//! GC procedure much more costly.
//! See https://github.com/rust-lang/miri/issues/2863
const LENGTH: usize = (1 << 14) - 1;
const LONG: &[u8] = &[b'x'; LENGTH];
fn main() {
assert!(eq(LONG, LONG))
}
fn eq(s1: &[u8], s2: &[u8]) -> bool {
if s1.len() != s2.len() {
return false;
}
s1.iter().zip(s2).all(|(c1, c2)| *c1 == *c2)
}
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