ccls/tests/templates/implicit_variable_instantiation.cc

namespace ns {
  enum VarType {};

  template<typename _>
  struct Holder {
    static constexpr VarType static_var = (VarType)0x0;
  };

  template<typename _>
  const typename VarType Holder<_>::static_var;


  int Foo = Holder<int>::static_var;
  int Foo2 = Holder<int>::static_var;
}

/*
OUTPUT:
{
  "types": [{
      "id": 0,
      "usr": "c:@N@ns@E@VarType",
      "short_name": "VarType",
      "qualified_name": "ns::VarType",
      "definition": "2:8",
      "instantiations": [0],
      "uses": ["*2:8", "*6:22", "*6:44", "*10:18"]
    }, {
      "id": 1,
      "usr": "c:@N@ns@ST>1#T@Holder",
      "short_name": "Holder",
      "qualified_name": "ns::Holder",
      "definition": "5:10",
      "vars": [0],
      "uses": ["*5:10", "*10:26", "13:13", "14:14"]
    }],
  "vars": [{
      "id": 0,
      "usr": "c:@N@ns@ST>1#T@Holder@static_var",
      "short_name": "static_var",
      "qualified_name": "ns::Holder::static_var",
      "declaration": "6:30",
      "definition": "10:37",
      "variable_type": 0,
      "declaring_type": 1,
      "uses": ["6:30", "10:37", "13:26", "14:27"]
    }, {
      "id": 1,
      "usr": "c:@N@ns@Foo",
      "short_name": "Foo",
      "qualified_name": "ns::Foo",
      "definition": "13:7",
      "uses": ["13:7"]
    }, {
      "id": 2,
      "usr": "c:@N@ns@Foo2",
      "short_name": "Foo2",
      "qualified_name": "ns::Foo2",
      "definition": "14:7",
      "uses": ["14:7"]
    }]
}
*/