go runtime_error ai_generated true

panic: runtime error: invalid memory address or nil pointer dereference (in goroutine)

ID: go/goroutine-nil-pointer-dereference

Also available as: JSON · Markdown · 中文
80%Fix Rate
88%Confidence
0Evidence
2024-03-30First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.0+ active — — —

Root Cause

A goroutine dereferences a nil pointer, often a struct field or interface that was never initialized, and the panic occurs in a goroutine so the stack trace is asynchronous.

generic

中文

一个 goroutine 解引用了 nil 指针，通常是未初始化的结构体字段或接口，且 panic 发生在 goroutine 中，因此堆栈是异步的。

Workarounds

  1. 90% success 
    Initialize all struct fields in the constructor and validate inputs before spawning goroutines.
  2. 82% success 
    Add a recover that logs the stack via debug.Stack() before re-panicking or exiting, so the root cause is visible.

Dead Ends

Common approaches that don't work:

  1. 85% fail

    The nil pointer indicates a logic bug; swallowing it leaves the program in an inconsistent state and loses the stack trace.