rust-lang / rust-lang/rust-bindgen
Missing constant defines when definition is a cast
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Description
Input C/C++ Header
test.h
#define LOWPRIORITY ((unsigned short) 0xffff)
Bindgen Invocation
$ bindgen test.h
Actual Results
/* automatically generated by rust-bindgen 0.69.2 */
Expected Results
/* automatically generated by rust-bindgen 0.69.2 */
pub const LOWPRIORITY: u32 = 65535;
or even better:
/* automatically generated by rust-bindgen 0.69.2 */
pub const LOWPRIORITY: u16 = 65535;
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
Reproduce the issue with the shown test.h input and the bindgen test.h invocation. Trace how the C casted macro is handled during binding generation, then verify that the generated output includes LOWPRIORITY with a suitable integer type and value of 65535.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, cpp, rust
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100