rust-lang / rust-lang/rust-bindgen
Make ParseCallbacks::int_macro available to the CLI
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Description
As per https://github.com/rust-lang/rust-bindgen/issues/3098 and https://github.com/rust-lang/rust-bindgen/issues/3200, currently clang doesn't provide sufficient type information to tell if a macro generated integer is a u64, a u32, or anything else.
As such and until a time when clang does provide the necessary detail, it would be nice to have an override and a fallback option available. Essentially, a fallback type for all integer generating macros, and then individual overrides on a per item basis.
Filing this issue so that it can be tracked separately from the "waiting for clang api changes" issue.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing how the CLI exposes ParseCallbacks and how integer-generating macros are currently handled. Review issues #3098 and #3200 for the missing clang type information and the requested fallback and per-item override behavior. Done means the CLI can configure both options for integer macros while preserving the existing clang limitation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- cli
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100