Is bytes.Buffer thread-safe in Go?

Go bytes.Buffer Thread Safety

In the Go programming language, the bytes.Buffer type implements a dynamically growing buffer of bytes. The documentation for bytes.Buffer does not explicitly mention thread safety. Is it thread-safe?

Answer

bytes.Buffer is not thread-safe.

The Go documentation adheres to the principle that if thread safety is not explicitly stated, it is not safe for concurrent access. Therefore, bytes.Buffer cannot be safely accessed by multiple goroutines simultaneously.

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