sanity_test.txt

 [fg-386] ~ > cat sanity.cpp
#include <iostream>
#include <unordered_set>

using namespace std;

int main(int argc, char* argv[])
{
  auto myset = unordered_set<int>{1,2,3};

  cout << "here we go!" << endl;
  for (auto item : myset) {
    cout << item << endl;
  }

  cout << "done!" << endl;
}
 [fg-386] ~ > clang++ -std=c++11 -stdlib=libc++ -Weverything sanity.cpp -o sanity.exe
sanity.cpp:8:3: warning: 'auto' type specifier is incompatible with C++98 [-Wc++98-compat]
  auto myset = unordered_set<int>{1,2,3};
  ^~~~
sanity.cpp:8:34: warning: generalized initializer lists are incompatible with C++98 [-Wc++98-compat]
  auto myset = unordered_set<int>{1,2,3};
                                 ^
sanity.cpp:8:34: warning: initialization of initializer_list object is incompatible with C++98 [-Wc++98-compat]
  auto myset = unordered_set<int>{1,2,3};
                                 ^~~~~~~
sanity.cpp:11:8: warning: 'auto' type specifier is incompatible with C++98 [-Wc++98-compat]
  for (auto item : myset) {
       ^~~~
sanity.cpp:11:18: warning: range-based for loop is incompatible with C++98 [-Wc++98-compat]
  for (auto item : myset) {
                 ^
sanity.cpp:6:14: warning: unused parameter 'argc' [-Wunused-parameter]
int main(int argc, char* argv[])
             ^
sanity.cpp:6:26: warning: unused parameter 'argv' [-Wunused-parameter]
int main(int argc, char* argv[])
                         ^
7 warnings generated.
 [fg-386] ~ > ./sanity.exe
here we go!
3
2
1
done!