go io_error ai_generated true

文件已关闭

file already closed

ID: go/os-file-already-closed

其他格式: JSON · Markdown 中文 · English
80%修复率
87%置信度
0证据数
2024-02-14首次发现

版本兼容性

版本状态引入弃用备注
1.13 active — — —
1.14 active — — —
1.15 active — — —

根因分析

尝试对已关闭的文件进行读、写或关闭操作，通常是由于双重关闭或在 defer Close() 后使用文件。

English

Attempting to read, write, or close a file that has already been closed, often due to double-close or using a file after defer Close().

generic

解决方案

  1. 95% 成功率 
    Use a sync.Once to ensure Close() is called only once.
  2. 90% 成功率 
    Set the file variable to nil after Close() and check for nil before using.

无效尝试

常见但无效的做法:

  1. 70% 失败

    The file pointer is not nil after closing; it's the underlying descriptor that is invalid.

  2. 60% 失败

    Sync() does not prevent the file from being closed.