The previous version of the test used `0 = 1;` to test an lvalue-typed `ErrorExpr`, but the extractor replaced the whole assignment expression with `ErrorExpr` instead of just the LHS. This variation of the test only leads to an `ErrorExpr` for the part of the syntax that's supposed to be an lvalue-typed expression, so that's an improvement. Unfortunately it still doesn't demonstrate that we can `Store` into an address computed by an `ErrorExpr`.
Semmle QL
This open source repository contains the standard QL libraries and queries that power LGTM, and the other products that Semmle makes available to its customers worldwide.
How do I learn QL and run queries?
There is extensive documentation on getting started with writing QL. You can use the interactive query console on LGTM.com or the QL for Eclipse plugin to try out your queries on any open-source project that's currently being analyzed.
Contributing
We welcome contributions to our standard library and standard checks. Do you have an idea for a new check, or how to improve an existing query? Then please go ahead and open a pull request! Before you do, though, please take the time to read our contributing guidelines. You can also consult our style guides to learn how to format your QL for consistency and clarity, how to write query metadata, and how to write query help documentation for your query.
License
The QL queries in this repository are licensed under Apache License 2.0 by Semmle.