libc++ type_index uniqueness bug

build_and_run

#!/bin/bash

clang++ -std=c++11 -stdlib=libc++ tu1.cpp tu2.cpp main.cpp -o test
./test

if [ $? -eq 0 ]
then
  echo "Success"
  exit 0
else
  echo "Failure"
  exit 1
fi

common.hpp

#include <vector>
#include <typeindex>

extern std::vector<std::type_index> registry;

void register1();
void register2();

main.cpp

#include "common.hpp"

#include <cassert>

std::vector<std::type_index> registry;

int main()
{
  register1();
  register2();

  assert(registry.size() == 2);
  assert(registry[0] != registry[1]);
}

tu1.cpp

#include "common.hpp"

namespace
{
  struct A
  {
    bool x;
  };
}

void register1()
{
  registry.emplace_back(std::type_index{typeid(A)});
}

tu2.cpp

#include "common.hpp"

namespace
{
  struct A
  {
    int x, y;
  };
}

void register2()
{
  registry.emplace_back(std::type_index{typeid(A)});
}