Enum discriminants are not checked for their repr's numeric limits.
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bug
good-first-pr
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- C++
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Description
enum Foo{
Bar = 99999999999999999999999999999999999999999999999999999999,
Qaz,
Quax,
}
#[repr(u8)]
enum Bar{
Qaz = 256,
Quax = -1,
}
fn main(){}
This code passes without any errors in gccrs.
Link: https://godbolt.org/z/M54P3h3Y1
Contributor guide
First steps
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- Open a pull request that references the issue number.
Research direction
Start with the linked Godbolt reproducer and inspect gccrs's enum handling for discriminant values. Confirm that both the unannotated enum and the #[repr(u8)] enum reject values outside their numeric limits, then add regression coverage for the resulting diagnostics.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100