```toml
[advisory]
id = "CVE-2015-20001"
package = "std"
categories = ["memory-corruption"]
date = "2015-05-27"
url = "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-20001"

[versions]
patched = [">= 1.2.0"]
unaffected = ["< 1.0.0"]
```

# Panic safety violation in BinaryHeap

In the standard library in Rust before 1.2.0, BinaryHeap is not panic-safe. The binary heap is left in an inconsistent state when the comparison of generic elements inside sift_up or sift_down_range panics. This bug leads to a drop of zeroed memory as an arbitrary type, which can result in a memory safety violation.