{CaseName: Name(""), in: `{"X": [1,2,3], "Y": 4}`, ptr: new(T), out: T{Y: 4}, err: &UnmarshalTypeError{"array", reflect.TypeFor[string](), 7, "T", "X"}},
	{CaseName: Name(""), in: `{"X": 23}`, ptr: new(T), out: T{}, err: &UnmarshalTypeError{"number", reflect.TypeFor[string](), 8, "T", "X"}},
	{CaseName: Name(""), in: `{"x": 1}`, ptr: new(tx), out: tx{}},
	{CaseName: Name(""), in: `{"x": 1}`, ptr: new(tx), out: tx{}},

// When RTTI is available, the function performs a runtime
// check to enforce this.
template <class Derived, class Base>
Derived* CheckedDowncastToActualType(Base* base) {
#if GTEST_HAS_RTTI
  GTEST_CHECK_(typeid(*base) == typeid(Derived));
  return dynamic_cast<Derived*>(base);  // NOLINT
#else
  return static_cast<Derived*>(base);  // Poor man's downcast.
#endif
}

#if GTEST_HAS_STREAM_REDIRECTION

// of the max int boundary.
// We do it this way so the test doesn't depend on ints being 32 bits.
var (
	bigInt  = fmt.Sprintf("0x%x", int(1<<uint(reflect.TypeFor[int]().Bits()-1)-1))
	bigUint = fmt.Sprintf("0x%x", uint(1<<uint(reflect.TypeFor[int]().Bits()-1)))
)

var execTests = []execTest{
	// Trivial cases.
	{"empty", "", "", nil, true},
	{"text", "some text", "some text", nil, true},

  friend TestInfo* internal::MakeAndRegisterTestInfo(
      const char* test_case_name,
      const char* name,
      const char* type_param,
      const char* value_param,
      internal::TypeId fixture_class_id,
      Test::SetUpTestCaseFunc set_up_tc,
      Test::TearDownTestCaseFunc tear_down_tc,
      internal::TestFactoryBase* factory);

  friend TestInfo* internal::MakeAndRegisterTestInfo(
      const char* test_case_name,
      const char* name,
      const char* type_param,
      const char* value_param,
      internal::TypeId fixture_class_id,
      Test::SetUpTestCaseFunc set_up_tc,
      Test::TearDownTestCaseFunc tear_down_tc,
      internal::TestFactoryBase* factory);

// of the max int boundary.
// We do it this way so the test doesn't depend on ints being 32 bits.
var (
	bigInt  = fmt.Sprintf("0x%x", int(1<<uint(reflect.TypeFor[int]().Bits()-1)-1))
	bigUint = fmt.Sprintf("0x%x", uint(1<<uint(reflect.TypeFor[int]().Bits()-1)))
)

var execTests = []execTest{
	// Trivial cases.
	{"empty", "", "", nil, true},
	{"text", "some text", "some text", nil, true},

	o.X = typ
	return o
}

// typeOrNil is like type_ but it returns nil if there was no type
// instead of reporting an error.
//
//	Type     = TypeName | TypeLit | "(" Type ")" .
//	TypeName = identifier | QualifiedIdent .
//	TypeLit  = ArrayType | StructType | PointerType | FunctionType | InterfaceType |
//		      SliceType | MapType | Channel_Type .
func (p *parser) typeOrNil() Expr {
	if trace {

		tt := (*structType)(unsafe.Pointer(t))
		for i := range tt.Fields {
			f := &tt.Fields[i]
			addTypeBits(bv, offset+f.Offset, f.Typ)
		}
	}
}

// TypeFor returns the [Type] that represents the type argument T.
func TypeFor[T any]() Type {
	var v T
	if t := TypeOf(v); t != nil {
		return t // optimize for T being a non-interface kind
	}
	return TypeOf((*T)(nil)).Elem() // only for an interface kind

	"sZ": {"sizeof...", 1, precUnary},
	"sc": {"static_cast", 2, precPostfix},
	"ss": {"<=>", 2, precSpaceship},
	"st": {"sizeof ", 1, precUnary},
	"sz": {"sizeof ", 1, precUnary},
	"te": {"typeid ", 1, precPostfix},
	"ti": {"typeid ", 1, precPostfix},
	"tr": {"throw", 0, precPrimary},
	"tw": {"throw ", 1, precUnary},
}

// operatorName parses:
//
//	operator_name ::= many different two character encodings.

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