---
id: 1735
title: "Look out! Divergent representations are everywhere!"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2022/11/10/divergent-representations-variable-overflows-c-compiler/"
published_at: "2022-11-10T12:30:53Z"
tags: ["vulnerability-research", "program-analysis", "compilers", "sqlite"]
phying_url: "https://phying.com/item/1735"
lang: en
---

# Look out! Divergent representations are everywhere!

## Summary

Compiler optimizations can give the same source variable divergent representations in a compiled binary — inconsistent interpretations on overflow that made Trail of Bits' SQLite vulnerability easier to exploit. The team built binary and source analyses to find more instances.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2022-11-10T12:30:53Z
- **Original:** https://blog.trailofbits.com/2022/11/10/divergent-representations-variable-overflows-c-compiler/
- **Phying News:** https://phying.com/item/1735