go test 1

mytest_go_c.go

package main

import "fmt"
import "unicode/utf8"
import "regexp"

/*
#include <stdio.h>
#include <errno.h>
void cprint( _GoString_ s)
{
	    printf( "from C: %s | from GO: %s, %lu\n", "hello/ТЕСТ", _GoStringPtr(s), _GoStringLen(s));
}
*/
import "C"

func main() {

//_, err := 
C.cprint("im ГО\x00")

re := regexp.MustCompile("\\p{Cyrillic}");

s := "Проверяем юникод 123 hello"

s = re.ReplaceAllString(s, "=$0")

fmt.Printf("%s %d %d\n", s, len(s), utf8.RuneCountInString(s) )

}