by joelegasse:

What steps will reproduce the problem?

Compiling and running the following program:

package main

import (
  "fmt"
  "bytes"
)

func main() {
  buf := bytes.NewBuffer([]byte{1, 2, 3, 4, 5})
  buf.ReadBytes(3)
  next,_ := buf.ReadByte()
  fmt.Println(next)
} 

What is the expected output?

"4" should be printed

What do you see instead?

"1" is printed

Which compiler are you using (5g, 6g, 8g, gccgo)?

6g

Which operating system are you using?

linux


Which revision are you using?  (hg identify)

867d37fb41a4 release.2011-02-01.1/release


Please provide any additional information below.

in src/pkg/bytes/buffer.go, right before the return for ReadBytes(), there should be the
line:

  b.off += size