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A deferred Close runs at function exit, but the CFG splices it in at the exit node where it can be reached along paths that never execute Sync. The previous dominance check therefore produced a false positive when a statement followed the if-block that registered the defer (e.g. deferredCloseWithSync2). For deferred closes, require instead that a handled Sync post-dominates the point where the defer is registered, which guarantees Sync runs before Close on every path on which Close is registered. Non-deferred closes keep the existing dominance check.
Go analysis support for CodeQL
This sub-folder contains the extractor, CodeQL libraries, and queries that power Go support for CodeQL.
It contains two major components:
- an extractor, itself written in Go, that parses Go source code and converts it into a database that can be queried using CodeQL.
- static analysis libraries and queries written in CodeQL that can be used to analyze such a database to find coding mistakes or security vulnerabilities.
Usage
To analyze a Go codebase, either use the CodeQL command-line interface to create a database yourself, or download a pre-built database from GitHub.com. You can then run any of the queries contained in this repository either on the command line or using the VS Code extension.
Contributions
Contributions are welcome! Please see our contribution guidelines and our code of conduct for details on how to participate in our community.
Licensing
The code in this repository is licensed under the MIT license.