go runtime_error ai_generated true

panic: runtime error: invalid memory address or nil pointer dereference [recovered]

ID: go/goroutine-panic-without-recover

Also available as: JSON · Markdown · 中文
80%Fix Rate
87%Confidence
0Evidence
2024-04-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.20 active — — —
1.21 active — — —

Root Cause

A goroutine panics due to nil pointer dereference, and the panic is recovered but the goroutine may have corrupted state.

generic

中文

一个 goroutine 由于空指针解引用而恐慌，恐慌被恢复，但 goroutine 可能已损坏状态。

Workarounds

  1. 95% success 
    if p != nil { p.Method() } else { handleError() }
  2. 85% success 
    defer func() { if r := recover(); r != nil { log.Println(r) } }()

Dead Ends

Common approaches that don't work:

  1. 80% fail

    Recover doesn't fix root cause; nil pointer remains undetected.

  2. 90% fail

    Race condition not solved by timing.