Go Race condition

race.go

package main

import (
	"fmt"
	"runtime"
	"sync"
)

func main() {
	var counter int
	var routineCount = 100

	var wg sync.WaitGroup
	wg.Add(routineCount)

	for i := 0; i < routineCount; i++ {
		go func() {
			loc := counter
			runtime.Gosched()
			loc = loc + 1

			counter = loc
			wg.Done()
		}()
	}

	wg.Wait()

	// Will not be equal to the number of Go routines that tried to increment counter
  fmt.Println(counter)
}