# Automatically Detecting and Fixing Concurrency Bugs in Go Software Systems

## Descriptions

This is the code repository of our ASPLOS paper [1]. GCatch is a suite of static detectors that can analyze large, real Go software. GFix is an automated fixing tool that can synthesize patches for blocking misuse-of-channel (BMOC) bugs detected by GCatch. We evaluated GCatch and GFix in 21 open-source Go projects (e.g., Docker, Kubernetes, gRPC). In total, GCatch detects 149 BMOC bugs and 119 traditional concurrency bugs and GFix successfully generates patches for 124 BMOC bugs. The detailed experimental data can be found [here](https://docs.google.com/spreadsheets/d/1mDxB6IRxrTodF9CrmpUu72E6673y5s9BkjKuTjtx1qc/edit?usp=sharing). 

## GCatch+
We extended GCatch to GCatch+ as a verification tool, as well as supporting detecting more misuse of concurrency primitives. The tool is in branch [verification](https://github.com/system-pclub/GCatch/tree/verification).

[1] Ziheng Liu, Shuofei Zhu, Boqin Qin, Hao Chen, and Linhai Song. “Automatically Detecting and Fixing Concurrency Bugs in Go Software Systems.” In ASPLOS’2021. 



github.com/system-pclub/GCatch

GCatch

(Experimental) An ambiguous license classifier was found.

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Source files are encoded using a non-standard text encoding.

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Package version is not a valid semantic version (semver).

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This Chrome extension includes content scripts that execute JavaScript on specified websites.

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Semantic versions published out of chronological order.

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

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(Experimental) Copyleft license information was found.

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Contains a Critical Common Vulnerability and Exposure (CVE).

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Title

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Uses debug, reflection and dynamic code execution features.

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Debug access

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Package has a dependency with a floating version range. This can cause issues if the dependency publishes a new major version.

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github.com/system-pclub/GCatch

Automatically Detecting and Fixing Concurrency Bugs in Go Software Systems

Descriptions

GCatch+

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