waitpid override ignores groups

この issue には説明がありません。

The issue only identifies a waitpid override and says that it ignores groups; no file, entry point, reproducer, or test is provided. Start by locating the waitpid override in the repository and determine how group handling is expected to work; done means the behavior is corrected and covered by an appropriate test or reproducer.

索引モデルが issue の本文から書いたものです。