add-error-code

Development

How to add a new error code in BoringSSL.

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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/google/boringssl/blob/HEAD/agents/skills/add_error_code/SKILL.md

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Adding a New Error Code

To add a new error code, you only need to use it in the source code and then run the error generation script. The script will automatically define it in the header and update the error database.

Steps

Use the Error Code:
- Use the new error code directly in your C/C++ source file (e.g., EVP_R_NEW_ERROR_CODE). It must start with the correct library prefix (e.g., EVP_R_, SSL_R_).
Run the Error Generator:
- Run util/make_errors.go, passing the lowercase library name (e.g., evp, ssl).
- Example:
```
go run util/make_errors.go evp
```
- The script will automatically:
  - Find the new error code in the source.
  - Assign it a numeric value.
  - Add the #define to the appropriate header in include/openssl.
  - Update the .errordata file in crypto/err.