go io_error ai_generated true

io: read limit exceeded

ID: go/io-reader-too-large

Also available as: JSON · Markdown · 中文
80%Fix Rate
81%Confidence
0Evidence
2024-05-18First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.20 active — — —

Root Cause

Using io.LimitReader with a limit smaller than the actual data size, causing Read to return an error when the limit is reached.

generic

中文

使用 io.LimitReader 时限制小于实际数据大小，导致达到限制时 Read 返回错误。

Workarounds

  1. 85% success 
    r := io.LimitReader(file, maxSize); data, err := io.ReadAll(r); if err != nil { ... }; if len(data) == maxSize { /* handle overflow */ }

Dead Ends

Common approaches that don't work:

  1. 60% fail

    May cause memory exhaustion if data is maliciously large.

  2. 90% fail

    Leads to incomplete data processing and potential corruption.