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Add instructions to test error code docs (#2145)

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Taylor Cramer 2024-11-21 10:58:56 -08:00 committed by GitHub
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src/diagnostics/error-codes.md
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@ -93,3 +93,12 @@ struct_span_code_err!(...)
For an example of a PR adding an error code, see [#76143]. For an example of a PR adding an error code, see [#76143].
[#76143]: https://github.com/rust-lang/rust/pull/76143 [#76143]: https://github.com/rust-lang/rust/pull/76143
## Running error code doctests
To test the examples added in `rustc_error_codes/src/error_codes`, run the
error index generator using:
```
./x test ./src/tools/error_index_generator
```