go compile_error ai_generated true

missing function body

ID: go/missing-function-body

Also available as: JSON · Markdown · 中文
92%Fix Rate
85%Confidence
1Evidence
2024-01-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
go1.21 active — — —
go1.22 active — — —
go1.23 active — — —

Root Cause

A function declaration has no body because the source file was truncated, the function is defined in another file not compiled, or a build tag caused the body to be excluded.

generic

中文

函数声明没有函数体，因为源文件被截断、函数定义在另一个未编译的文件中，或者构建标签导致函数体被排除。

Official Documentation

https://go.dev/ref/spec#Function_declarations

Workarounds

  1. 95% success Provide the missing function body: define the function with a block, e.g., `func foo() int { return 0 }`. 
    Provide the missing function body: define the function with a block, e.g., `func foo() int { return 0 }`.
  2. 90% success If using build tags, ensure the file with the function body is included: `go build -tags "mytag" .` or remove conflicting tags. 
    If using build tags, ensure the file with the function body is included: `go build -tags "mytag" .` or remove conflicting tags.

中文步骤

  1. Provide the missing function body: define the function with a block, e.g., `func foo() int { return 0 }`.
  2. If using build tags, ensure the file with the function body is included: `go build -tags "mytag" .` or remove conflicting tags.

Dead Ends

Common approaches that don't work:

  1. 95% fail

    The compiler requires an actual block {} not just a return; the function must have a body.

  2. 80% fail

    If the function is called elsewhere, removing it causes undefined errors.