stdin I/O prevent goroutine execution (Mac, linux)

[ldemailly]

package main

import (
	"fmt"
	"time"
)

func main() {
	go func() {
		time.Sleep(1 * time.Second)
		fmt.Println("from goroutine")
	}()
	fmt.Print("prompt>")
	var x string
	fmt.Scanln(&x)
	fmt.Printf("Read %q\n", x)
}

With normal go, "from goroutine" prints while waiting at the prompt

$ tinygo run main.go 
prompt>Read ""

(so stdin isn't there when running through tinygo run but that's not the main issue/bug:

tinygo build -o tinymain main.go 
./tinymain
prompt> 

🦗

expected

$ go run main.go 
prompt>from goroutine
abc
Read "abc"