What version of Go are you using (go version)?

go version go1.7.4 darwin/amd64

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/vm/go"
GORACE=""
GOROOT="/usr/local/Cellar/go/1.7.4/libexec"
GOTOOLDIR="/usr/local/Cellar/go/1.7.4/libexec/pkg/tool/darwin_amd64"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/y9/b0pxmq754gn9spczf1cw_sq80000gn/T/go-build998056904=/tmp/go-build -gno-record-gcc-switches -fno-common"
CXX="clang++"
CGO_ENABLED="1"

What did you do?

If you have a loop with time.Sleep(time.Second) and you set the clock back (for example, an hour), the time.Sleep will hang for that amount of time (an hour), instead of 1s.

Run this:

package main

import (
	"fmt"
	"time"
)

func main() {
	for {
		fmt.Printf("Sleeping 1s (%s)\n", time.Now())
		time.Sleep(time.Second)
	}
}

And then set the clock back an minute or hour, or however much time you want it to hang.

What did you expect to see?

I expect time.Sleep not be affected by clock changes (or skew).

What did you see instead?

The time.Sleep will hang (for a minute or however long you set the clock back).