How Can I Get More Detailed Stack Traces When Debugging Go Code?

Debugging Errors in Go Code with Stack Traces

In Go, when a panic occurs, the stack trace typically only provides information up to the point where the code panicked. This can make it challenging to pinpoint the source of an error in third-party code. However, there are techniques that allow developers to obtain more detailed stack traces.

Using the "golang/error" Package

The "golang/error" package provides an interface called stackTracer, which allows errors to implement a StackTrace() method that returns a stack of frames describing the error's provenance.

To use this interface:

type stackTracer interface {
    StackTrace() errors.StackTrace
}

If an error implements stackTracer, you can retrieve its stack trace by casting it to the interface and calling the StackTrace() method:

err, ok := errors.(stackTracer) // ok is false if errors doesn't implement stackTracer
if ok {
    stack := err.StackTrace()
    fmt.Println(stack) // Print the stack trace
}

Alternative Libraries

In addition to the "golang/error" package, there are other libraries that provide error handling capabilities with customizable stack trace options:

• eris: An error handling library that supports custom formatting and readable stack traces.
• go-errors/errors: Adds stacktrace support to errors in Go.
• palantir/stacktrace: Provides extensive stack trace capabilities for Go.

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