test/other/test_pthread_icu.cpp

#include <iostream>
#include <thread>
#include <unicode/unistr.h>

// Test that code using both pthread and icu compiles.
int main() {
  std::thread([] {
    std::string str;
    icu::UnicodeString ustr("Hello, world!");
    ustr.toUTF8String(str);
    std::cout << str << std::endl;
  }).join();
}