diff --git a/deps/googletest/include/gtest/gtest-assertion-result.h b/deps/googletest/include/gtest/gtest-assertion-result.h
index 954e7c40f3af8b..52a6d62c77ec2f 100644
--- a/deps/googletest/include/gtest/gtest-assertion-result.h
+++ b/deps/googletest/include/gtest/gtest-assertion-result.h
@@ -137,7 +137,7 @@ namespace testing {
 class [[nodiscard]] AssertionResult;
 #endif  // !SWIG
 
-class GTEST_API_ AssertionResult {
+class GTEST_API_ [[nodiscard]] AssertionResult {
  public:
   // Copy constructor.
   // Used in EXPECT_TRUE/FALSE(assertion_result).
diff --git a/deps/googletest/include/gtest/gtest-death-test.h b/deps/googletest/include/gtest/gtest-death-test.h
index 3c61909726f3c1..afd7b3a4685a01 100644
--- a/deps/googletest/include/gtest/gtest-death-test.h
+++ b/deps/googletest/include/gtest/gtest-death-test.h
@@ -192,7 +192,7 @@ GTEST_API_ bool InDeathTestChild();
 // Two predicate classes that can be used in {ASSERT,EXPECT}_EXIT*:
 
 // Tests that an exit code describes a normal exit with a given exit code.
-class GTEST_API_ ExitedWithCode {
+class GTEST_API_ [[nodiscard]] ExitedWithCode {
  public:
   explicit ExitedWithCode(int exit_code);
   ExitedWithCode(const ExitedWithCode&) = default;
@@ -206,7 +206,7 @@ class GTEST_API_ ExitedWithCode {
 #if !defined(GTEST_OS_WINDOWS) && !defined(GTEST_OS_FUCHSIA)
 // Tests that an exit code describes an exit due to termination by a
 // given signal.
-class GTEST_API_ KilledBySignal {
+class GTEST_API_ [[nodiscard]] KilledBySignal {
  public:
   explicit KilledBySignal(int signum);
   bool operator()(int exit_status) const;
@@ -317,7 +317,7 @@ class GTEST_API_ KilledBySignal {
     GTEST_LOG_(WARNING) << "Death tests are not supported on this platform.\n" \
                         << "Statement '" #statement "' cannot be verified.";   \
   } else if (::testing::internal::AlwaysFalse()) {                             \
-    ::testing::internal::MakeDeathTestMatcher(regex_or_matcher);               \
+    (void)::testing::internal::MakeDeathTestMatcher(regex_or_matcher);         \
     GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);                 \
     terminator;                                                                \
   } else                                                                       \
diff --git a/deps/googletest/include/gtest/gtest-matchers.h b/deps/googletest/include/gtest/gtest-matchers.h
index bd8dfe999d3681..08ffbeb93c976f 100644
--- a/deps/googletest/include/gtest/gtest-matchers.h
+++ b/deps/googletest/include/gtest/gtest-matchers.h
@@ -75,7 +75,7 @@ namespace testing {
 //   2. a factory function that creates a Matcher<T> object from a
 //      FooMatcherMatcher.
 
-class MatchResultListener {
+class [[nodiscard]] MatchResultListener {
  public:
   // Creates a listener object with the given underlying ostream.  The
   // listener does not own the ostream, and does not dereference it
@@ -111,7 +111,7 @@ inline MatchResultListener::~MatchResultListener() = default;
 
 // An instance of a subclass of this knows how to describe itself as a
 // matcher.
-class GTEST_API_ MatcherDescriberInterface {
+class GTEST_API_ [[nodiscard]] MatcherDescriberInterface {
  public:
   virtual ~MatcherDescriberInterface() = default;
 
@@ -137,7 +137,7 @@ class GTEST_API_ MatcherDescriberInterface {
 
 // The implementation of a matcher.
 template <typename T>
-class MatcherInterface : public MatcherDescriberInterface {
+class [[nodiscard]] MatcherInterface : public MatcherDescriberInterface {
  public:
   // Returns true if and only if the matcher matches x; also explains the
   // match result to 'listener' if necessary (see the next paragraph), in
@@ -180,7 +180,7 @@ class MatcherInterface : public MatcherDescriberInterface {
 namespace internal {
 
 // A match result listener that ignores the explanation.
-class DummyMatchResultListener : public MatchResultListener {
+class [[nodiscard]] DummyMatchResultListener : public MatchResultListener {
  public:
   DummyMatchResultListener() : MatchResultListener(nullptr) {}
 
@@ -192,7 +192,7 @@ class DummyMatchResultListener : public MatchResultListener {
 // A match result listener that forwards the explanation to a given
 // ostream.  The difference between this and MatchResultListener is
 // that the former is concrete.
-class StreamMatchResultListener : public MatchResultListener {
+class [[nodiscard]] StreamMatchResultListener : public MatchResultListener {
  public:
   explicit StreamMatchResultListener(::std::ostream* os)
       : MatchResultListener(os) {}
@@ -225,7 +225,7 @@ struct SharedPayload : SharedPayloadBase {
 // from it.  We put functionalities common to all Matcher<T>
 // specializations here to avoid code duplication.
 template <typename T>
-class MatcherBase : private MatcherDescriberInterface {
+class [[nodiscard]] MatcherBase : private MatcherDescriberInterface {
  public:
   // Returns true if and only if the matcher matches x; also explains the
   // match result to 'listener'.
@@ -460,7 +460,7 @@ class MatcherBase : private MatcherDescriberInterface {
 // implementation of Matcher<T> is just a std::shared_ptr to const
 // MatcherInterface<T>.  Don't inherit from Matcher!
 template <typename T>
-class Matcher : public internal::MatcherBase<T> {
+class [[nodiscard]] Matcher : public internal::MatcherBase<T> {
  public:
   // Constructs a null matcher.  Needed for storing Matcher objects in STL
   // containers.  A default-constructed matcher is not yet initialized.  You
@@ -491,8 +491,8 @@ class Matcher : public internal::MatcherBase<T> {
 // instead of Eq(str) and "foo" instead of Eq("foo") when a std::string
 // matcher is expected.
 template <>
-class GTEST_API_ Matcher<const std::string&>
-    : public internal::MatcherBase<const std::string&> {
+class GTEST_API_ [[nodiscard]]
+Matcher<const std::string&> : public internal::MatcherBase<const std::string&> {
  public:
   Matcher() = default;
 
@@ -513,8 +513,8 @@ class GTEST_API_ Matcher<const std::string&>
 };
 
 template <>
-class GTEST_API_ Matcher<std::string>
-    : public internal::MatcherBase<std::string> {
+class GTEST_API_ [[nodiscard]]
+Matcher<std::string> : public internal::MatcherBase<std::string> {
  public:
   Matcher() = default;
 
@@ -541,7 +541,7 @@ class GTEST_API_ Matcher<std::string>
 // instead of Eq(str) and "foo" instead of Eq("foo") when a absl::string_view
 // matcher is expected.
 template <>
-class GTEST_API_ Matcher<const internal::StringView&>
+class GTEST_API_ [[nodiscard]] Matcher<const internal::StringView&>
     : public internal::MatcherBase<const internal::StringView&> {
  public:
   Matcher() = default;
@@ -567,7 +567,7 @@ class GTEST_API_ Matcher<const internal::StringView&>
 };
 
 template <>
-class GTEST_API_ Matcher<internal::StringView>
+class GTEST_API_ [[nodiscard]] Matcher<internal::StringView>
     : public internal::MatcherBase<internal::StringView> {
  public:
   Matcher() = default;
@@ -614,7 +614,7 @@ std::ostream& operator<<(std::ostream& os, const Matcher<T>& matcher) {
 //
 // See the definition of NotNull() for a complete example.
 template <class Impl>
-class PolymorphicMatcher {
+class [[nodiscard]] PolymorphicMatcher {
  public:
   explicit PolymorphicMatcher(const Impl& an_impl) : impl_(an_impl) {}
 
@@ -689,7 +689,7 @@ namespace internal {
 // The following template definition assumes that the Rhs parameter is
 // a "bare" type (i.e. neither 'const T' nor 'T&').
 template <typename D, typename Rhs, typename Op>
-class ComparisonBase {
+class [[nodiscard]] ComparisonBase {
  public:
   explicit ComparisonBase(const Rhs& rhs) : rhs_(rhs) {}
 
@@ -722,7 +722,8 @@ class ComparisonBase {
 };
 
 template <typename Rhs>
-class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>> {
+class [[nodiscard]] EqMatcher
+    : public ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>> {
  public:
   explicit EqMatcher(const Rhs& rhs)
       : ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>>(rhs) {}
@@ -730,7 +731,7 @@ class EqMatcher : public ComparisonBase<EqMatcher<Rhs>, Rhs, std::equal_to<>> {
   static const char* NegatedDesc() { return "isn't equal to"; }
 };
 template <typename Rhs>
-class NeMatcher
+class [[nodiscard]] NeMatcher
     : public ComparisonBase<NeMatcher<Rhs>, Rhs, std::not_equal_to<>> {
  public:
   explicit NeMatcher(const Rhs& rhs)
@@ -739,7 +740,8 @@ class NeMatcher
   static const char* NegatedDesc() { return "is equal to"; }
 };
 template <typename Rhs>
-class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>> {
+class [[nodiscard]] LtMatcher
+    : public ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>> {
  public:
   explicit LtMatcher(const Rhs& rhs)
       : ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>>(rhs) {}
@@ -747,7 +749,8 @@ class LtMatcher : public ComparisonBase<LtMatcher<Rhs>, Rhs, std::less<>> {
   static const char* NegatedDesc() { return "isn't <"; }
 };
 template <typename Rhs>
-class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>> {
+class [[nodiscard]] GtMatcher
+    : public ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>> {
  public:
   explicit GtMatcher(const Rhs& rhs)
       : ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>>(rhs) {}
@@ -755,7 +758,7 @@ class GtMatcher : public ComparisonBase<GtMatcher<Rhs>, Rhs, std::greater<>> {
   static const char* NegatedDesc() { return "isn't >"; }
 };
 template <typename Rhs>
-class LeMatcher
+class [[nodiscard]] LeMatcher
     : public ComparisonBase<LeMatcher<Rhs>, Rhs, std::less_equal<>> {
  public:
   explicit LeMatcher(const Rhs& rhs)
@@ -764,7 +767,7 @@ class LeMatcher
   static const char* NegatedDesc() { return "isn't <="; }
 };
 template <typename Rhs>
-class GeMatcher
+class [[nodiscard]] GeMatcher
     : public ComparisonBase<GeMatcher<Rhs>, Rhs, std::greater_equal<>> {
  public:
   explicit GeMatcher(const Rhs& rhs)
@@ -776,7 +779,7 @@ class GeMatcher
 // Same as `EqMatcher<Rhs>`, except that the `rhs` is stored as `StoredRhs` and
 // must be implicitly convertible to `Rhs`.
 template <typename Rhs, typename StoredRhs>
-class ImplicitCastEqMatcher {
+class [[nodiscard]] ImplicitCastEqMatcher {
  public:
   explicit ImplicitCastEqMatcher(const StoredRhs& rhs) : stored_rhs_(rhs) {}
 
@@ -809,7 +812,7 @@ using StringLike = T;
 // Implements polymorphic matchers MatchesRegex(regex) and
 // ContainsRegex(regex), which can be used as a Matcher<T> as long as
 // T can be converted to a string.
-class MatchesRegexMatcher {
+class [[nodiscard]] MatchesRegexMatcher {
  public:
   MatchesRegexMatcher(const RE* regex, bool full_match)
       : regex_(regex), full_match_(full_match) {}
diff --git a/deps/googletest/include/gtest/gtest-printers.h b/deps/googletest/include/gtest/gtest-printers.h
index 048c32db2e7c2e..d1704bb7580a96 100644
--- a/deps/googletest/include/gtest/gtest-printers.h
+++ b/deps/googletest/include/gtest/gtest-printers.h
@@ -382,7 +382,7 @@ void PrintWithFallback(const T& value, ::std::ostream* os) {
 
 // The default case.
 template <typename ToPrint, typename OtherOperand>
-class FormatForComparison {
+class [[nodiscard]] FormatForComparison {
  public:
   static ::std::string Format(const ToPrint& value) {
     return ::testing::PrintToString(value);
@@ -391,7 +391,7 @@ class FormatForComparison {
 
 // Array.
 template <typename ToPrint, size_t N, typename OtherOperand>
-class FormatForComparison<ToPrint[N], OtherOperand> {
+class [[nodiscard]] FormatForComparison<ToPrint[N], OtherOperand> {
  public:
   static ::std::string Format(const ToPrint* value) {
     return FormatForComparison<const ToPrint*, OtherOperand>::Format(value);
@@ -477,7 +477,7 @@ std::string FormatForComparisonFailureMessage(const T1& value,
 // function template), as we need to partially specialize it for
 // reference types, which cannot be done with function templates.
 template <typename T>
-class UniversalPrinter;
+class [[nodiscard]] UniversalPrinter;
 
 // Prints the given value using the << operator if it has one;
 // otherwise prints the bytes in it.  This is what
@@ -889,7 +889,7 @@ void PrintTo(const ::std::pair<T1, T2>& value, ::std::ostream* os) {
 // Implements printing a non-reference type T by letting the compiler
 // pick the right overload of PrintTo() for T.
 template <typename T>
-class UniversalPrinter {
+class [[nodiscard]] UniversalPrinter {
  public:
   // MSVC warns about adding const to a function type, so we want to
   // disable the warning.
@@ -915,11 +915,11 @@ class UniversalPrinter {
 
 // Remove any const-qualifiers before passing a type to UniversalPrinter.
 template <typename T>
-class UniversalPrinter<const T> : public UniversalPrinter<T> {};
+class [[nodiscard]] UniversalPrinter<const T> : public UniversalPrinter<T> {};
 
 // Printer for std::any
 template <>
-class UniversalPrinter<std::any> {
+class [[nodiscard]] UniversalPrinter<std::any> {
  public:
   static void Print(const std::any& value, ::std::ostream* os) {
     if (value.has_value()) {
@@ -942,7 +942,7 @@ class UniversalPrinter<std::any> {
 
 // Printer for std::optional
 template <typename T>
-class UniversalPrinter<std::optional<T>> {
+class [[nodiscard]] UniversalPrinter<std::optional<T>> {
  public:
   static void Print(const std::optional<T>& value, ::std::ostream* os) {
     *os << '(';
@@ -956,14 +956,14 @@ class UniversalPrinter<std::optional<T>> {
 };
 
 template <>
-class UniversalPrinter<std::nullopt_t> {
+class [[nodiscard]] UniversalPrinter<std::nullopt_t> {
  public:
   static void Print(std::nullopt_t, ::std::ostream* os) { *os << "(nullopt)"; }
 };
 
 // Printer for std::variant
 template <typename... T>
-class UniversalPrinter<std::variant<T...>> {
+class [[nodiscard]] UniversalPrinter<std::variant<T...>> {
  public:
   static void Print(const std::variant<T...>& value, ::std::ostream* os) {
     *os << '(';
@@ -1031,7 +1031,7 @@ GTEST_API_ void UniversalPrintArray(const wchar_t* begin, size_t len,
 
 // Implements printing an array type T[N].
 template <typename T, size_t N>
-class UniversalPrinter<T[N]> {
+class [[nodiscard]] UniversalPrinter<T[N]> {
  public:
   // Prints the given array, omitting some elements when there are too
   // many.
@@ -1042,7 +1042,7 @@ class UniversalPrinter<T[N]> {
 
 // Implements printing a reference type T&.
 template <typename T>
-class UniversalPrinter<T&> {
+class [[nodiscard]] UniversalPrinter<T&> {
  public:
   // MSVC warns about adding const to a function type, so we want to
   // disable the warning.
@@ -1065,35 +1065,35 @@ class UniversalPrinter<T&> {
 // NUL-terminated string (but not the pointer) is printed.
 
 template <typename T>
-class UniversalTersePrinter {
+class [[nodiscard]] UniversalTersePrinter {
  public:
   static void Print(const T& value, ::std::ostream* os) {
     UniversalPrint(value, os);
   }
 };
 template <typename T>
-class UniversalTersePrinter<T&> {
+class [[nodiscard]] UniversalTersePrinter<T&> {
  public:
   static void Print(const T& value, ::std::ostream* os) {
     UniversalPrint(value, os);
   }
 };
 template <typename T>
-class UniversalTersePrinter<std::reference_wrapper<T>> {
+class [[nodiscard]] UniversalTersePrinter<std::reference_wrapper<T>> {
  public:
   static void Print(std::reference_wrapper<T> value, ::std::ostream* os) {
     UniversalTersePrinter<T>::Print(value.get(), os);
   }
 };
 template <typename T, size_t N>
-class UniversalTersePrinter<T[N]> {
+class [[nodiscard]] UniversalTersePrinter<T[N]> {
  public:
   static void Print(const T (&value)[N], ::std::ostream* os) {
     UniversalPrinter<T[N]>::Print(value, os);
   }
 };
 template <>
-class UniversalTersePrinter<const char*> {
+class [[nodiscard]] UniversalTersePrinter<const char*> {
  public:
   static void Print(const char* str, ::std::ostream* os) {
     if (str == nullptr) {
@@ -1104,12 +1104,12 @@ class UniversalTersePrinter<const char*> {
   }
 };
 template <>
-class UniversalTersePrinter<char*> : public UniversalTersePrinter<const char*> {
-};
+class [[nodiscard]]
+UniversalTersePrinter<char*> : public UniversalTersePrinter<const char*> {};
 
 #ifdef __cpp_lib_char8_t
 template <>
-class UniversalTersePrinter<const char8_t*> {
+class [[nodiscard]] UniversalTersePrinter<const char8_t*> {
  public:
   static void Print(const char8_t* str, ::std::ostream* os) {
     if (str == nullptr) {
@@ -1120,12 +1120,12 @@ class UniversalTersePrinter<const char8_t*> {
   }
 };
 template <>
-class UniversalTersePrinter<char8_t*>
+class [[nodiscard]] UniversalTersePrinter<char8_t*>
     : public UniversalTersePrinter<const char8_t*> {};
 #endif
 
 template <>
-class UniversalTersePrinter<const char16_t*> {
+class [[nodiscard]] UniversalTersePrinter<const char16_t*> {
  public:
   static void Print(const char16_t* str, ::std::ostream* os) {
     if (str == nullptr) {
@@ -1136,11 +1136,11 @@ class UniversalTersePrinter<const char16_t*> {
   }
 };
 template <>
-class UniversalTersePrinter<char16_t*>
+class [[nodiscard]] UniversalTersePrinter<char16_t*>
     : public UniversalTersePrinter<const char16_t*> {};
 
 template <>
-class UniversalTersePrinter<const char32_t*> {
+class [[nodiscard]] UniversalTersePrinter<const char32_t*> {
  public:
   static void Print(const char32_t* str, ::std::ostream* os) {
     if (str == nullptr) {
@@ -1151,12 +1151,12 @@ class UniversalTersePrinter<const char32_t*> {
   }
 };
 template <>
-class UniversalTersePrinter<char32_t*>
+class [[nodiscard]] UniversalTersePrinter<char32_t*>
     : public UniversalTersePrinter<const char32_t*> {};
 
 #if GTEST_HAS_STD_WSTRING
 template <>
-class UniversalTersePrinter<const wchar_t*> {
+class [[nodiscard]] UniversalTersePrinter<const wchar_t*> {
  public:
   static void Print(const wchar_t* str, ::std::ostream* os) {
     if (str == nullptr) {
@@ -1169,7 +1169,7 @@ class UniversalTersePrinter<const wchar_t*> {
 #endif
 
 template <>
-class UniversalTersePrinter<wchar_t*> {
+class [[nodiscard]] UniversalTersePrinter<wchar_t*> {
  public:
   static void Print(wchar_t* str, ::std::ostream* os) {
     UniversalTersePrinter<const wchar_t*>::Print(str, os);
diff --git a/deps/googletest/include/gtest/gtest-spi.h b/deps/googletest/include/gtest/gtest-spi.h
index c0613b6959560b..27c2d660e0d51d 100644
--- a/deps/googletest/include/gtest/gtest-spi.h
+++ b/deps/googletest/include/gtest/gtest-spi.h
@@ -51,7 +51,7 @@ namespace testing {
 // generated in the same thread that created this object or it can intercept
 // all generated failures. The scope of this mock object can be controlled with
 // the second argument to the two arguments constructor.
-class GTEST_API_ ScopedFakeTestPartResultReporter
+class GTEST_API_ [[nodiscard]] ScopedFakeTestPartResultReporter
     : public TestPartResultReporterInterface {
  public:
   // The two possible mocking modes of this object.
@@ -100,7 +100,7 @@ namespace internal {
 // TestPartResultArray contains exactly one failure that has the given
 // type and contains the given substring.  If that's not the case, a
 // non-fatal failure will be generated.
-class GTEST_API_ SingleFailureChecker {
+class GTEST_API_ [[nodiscard]] SingleFailureChecker {
  public:
   // The constructor remembers the arguments.
   SingleFailureChecker(const TestPartResultArray* results,
diff --git a/deps/googletest/include/gtest/gtest-test-part.h b/deps/googletest/include/gtest/gtest-test-part.h
index 41c8a9a0d0e31f..90380a973070b9 100644
--- a/deps/googletest/include/gtest/gtest-test-part.h
+++ b/deps/googletest/include/gtest/gtest-test-part.h
@@ -51,7 +51,7 @@ namespace testing {
 // assertion or an explicit FAIL(), ADD_FAILURE(), or SUCCESS()).
 //
 // Don't inherit from TestPartResult as its destructor is not virtual.
-class GTEST_API_ TestPartResult {
+class GTEST_API_ [[nodiscard]] TestPartResult {
  public:
   // The possible outcomes of a test part (i.e. an assertion or an
   // explicit SUCCEED(), FAIL(), or ADD_FAILURE()).
@@ -131,7 +131,7 @@ std::ostream& operator<<(std::ostream& os, const TestPartResult& result);
 //
 // Don't inherit from TestPartResultArray as its destructor is not
 // virtual.
-class GTEST_API_ TestPartResultArray {
+class GTEST_API_ [[nodiscard]] TestPartResultArray {
  public:
   TestPartResultArray() = default;
 
@@ -152,7 +152,7 @@ class GTEST_API_ TestPartResultArray {
 };
 
 // This interface knows how to report a test part result.
-class GTEST_API_ TestPartResultReporterInterface {
+class GTEST_API_ [[nodiscard]] TestPartResultReporterInterface {
  public:
   virtual ~TestPartResultReporterInterface() = default;
 
@@ -167,7 +167,7 @@ namespace internal {
 // reported, it only delegates the reporting to the former result reporter.
 // The original result reporter is restored in the destructor.
 // INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
-class GTEST_API_ HasNewFatalFailureHelper
+class GTEST_API_ [[nodiscard]] HasNewFatalFailureHelper
     : public TestPartResultReporterInterface {
  public:
   HasNewFatalFailureHelper();
diff --git a/deps/googletest/include/gtest/gtest-typed-test.h b/deps/googletest/include/gtest/gtest-typed-test.h
index ae24f94915d004..8575a41076ed0f 100644
--- a/deps/googletest/include/gtest/gtest-typed-test.h
+++ b/deps/googletest/include/gtest/gtest-typed-test.h
@@ -45,7 +45,7 @@
 // First, define a fixture class template.  It should be parameterized
 // by a type.  Remember to derive it from testing::Test.
 template <typename T>
-class FooTest : public testing::Test {
+class [[nodiscard]] FooTest : public testing::Test {
  public:
   ...
   using List = ::std::list<T>;
@@ -123,7 +123,7 @@ TYPED_TEST(FooTest, HasPropertyA) { ... }
 // First, define a fixture class template.  It should be parameterized
 // by a type.  Remember to derive it from testing::Test.
 template <typename T>
-class FooTest : public testing::Test {
+class [[nodiscard]] FooTest : public testing::Test {
   ...
 };
 
diff --git a/deps/googletest/include/gtest/gtest.h b/deps/googletest/include/gtest/gtest.h
index 69994ee9dc3a36..b63685380c8a14 100644
--- a/deps/googletest/include/gtest/gtest.h
+++ b/deps/googletest/include/gtest/gtest.h
@@ -193,7 +193,7 @@ std::set<std::string>* GetIgnoredParameterizedTestSuites();
 // A base class that prevents subclasses from being copyable.
 // We do this instead of using '= delete' so as to avoid triggering warnings
 // inside user code regarding any of our declarations.
-class GTestNonCopyable {
+class [[nodiscard]] GTestNonCopyable {
  public:
   GTestNonCopyable() = default;
   GTestNonCopyable(const GTestNonCopyable&) = delete;
@@ -206,15 +206,15 @@ class GTestNonCopyable {
 // The friend relationship of some of these classes is cyclic.
 // If we don't forward declare them the compiler might confuse the classes
 // in friendship clauses with same named classes on the scope.
-class Test;
-class TestSuite;
+class [[nodiscard]] Test;
+class [[nodiscard]] TestSuite;
 
 // Old API is still available but deprecated
 #ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
 using TestCase = TestSuite;
 #endif
-class TestInfo;
-class UnitTest;
+class [[nodiscard]] TestInfo;
+class [[nodiscard]] UnitTest;
 
 // The abstract class that all tests inherit from.
 //
@@ -239,7 +239,7 @@ class UnitTest;
 //   TEST_F(FooTest, Baz) { ... }
 //
 // Test is not copyable.
-class GTEST_API_ Test {
+class GTEST_API_ [[nodiscard]] Test {
  public:
   friend class TestInfo;
 
@@ -366,7 +366,7 @@ typedef internal::TimeInMillis TimeInMillis;
 // output as a key/value string pair.
 //
 // Don't inherit from TestProperty as its destructor is not virtual.
-class TestProperty {
+class [[nodiscard]] TestProperty {
  public:
   // C'tor.  TestProperty does NOT have a default constructor.
   // Always use this constructor (with parameters) to create a
@@ -396,7 +396,7 @@ class TestProperty {
 // the Test.
 //
 // TestResult is not copyable.
-class GTEST_API_ TestResult {
+class GTEST_API_ [[nodiscard]] TestResult {
  public:
   // Creates an empty TestResult.
   TestResult();
@@ -530,7 +530,7 @@ class GTEST_API_ TestResult {
 // The constructor of TestInfo registers itself with the UnitTest
 // singleton such that the RUN_ALL_TESTS() macro knows which tests to
 // run.
-class GTEST_API_ TestInfo {
+class GTEST_API_ [[nodiscard]] TestInfo {
  public:
   // Destructs a TestInfo object.  This function is not virtual, so
   // don't inherit from TestInfo.
@@ -669,7 +669,7 @@ class GTEST_API_ TestInfo {
 // A test suite, which consists of a vector of TestInfos.
 //
 // TestSuite is not copyable.
-class GTEST_API_ TestSuite {
+class GTEST_API_ [[nodiscard]] TestSuite {
  public:
   // Creates a TestSuite with the given name.
   //
@@ -890,7 +890,7 @@ class GTEST_API_ TestSuite {
 //      available.
 //   2. You cannot use ASSERT_* directly in a constructor or
 //      destructor.
-class Environment {
+class [[nodiscard]] Environment {
  public:
   // The d'tor is virtual as we need to subclass Environment.
   virtual ~Environment() = default;
@@ -911,7 +911,7 @@ class Environment {
 #if GTEST_HAS_EXCEPTIONS
 
 // Exception which can be thrown from TestEventListener::OnTestPartResult.
-class GTEST_API_ AssertionException
+class GTEST_API_ [[nodiscard]] AssertionException
     : public internal::GoogleTestFailureException {
  public:
   explicit AssertionException(const TestPartResult& result)
@@ -922,7 +922,7 @@ class GTEST_API_ AssertionException
 
 // The interface for tracing execution of tests. The methods are organized in
 // the order the corresponding events are fired.
-class TestEventListener {
+class [[nodiscard]] TestEventListener {
  public:
   virtual ~TestEventListener() = default;
 
@@ -989,7 +989,7 @@ class TestEventListener {
 // the methods they override will not be caught during the build.  For
 // comments about each method please see the definition of TestEventListener
 // above.
-class EmptyTestEventListener : public TestEventListener {
+class [[nodiscard]] EmptyTestEventListener : public TestEventListener {
  public:
   void OnTestProgramStart(const UnitTest& /*unit_test*/) override {}
   void OnTestIterationStart(const UnitTest& /*unit_test*/,
@@ -1019,7 +1019,7 @@ class EmptyTestEventListener : public TestEventListener {
 };
 
 // TestEventListeners lets users add listeners to track events in Google Test.
-class GTEST_API_ TestEventListeners {
+class GTEST_API_ [[nodiscard]] TestEventListeners {
  public:
   TestEventListeners();
   ~TestEventListeners();
@@ -1110,7 +1110,7 @@ class GTEST_API_ TestEventListeners {
 //
 // This class is thread-safe as long as the methods are called
 // according to their specification.
-class GTEST_API_ UnitTest {
+class GTEST_API_ [[nodiscard]] UnitTest {
  public:
   // Gets the singleton UnitTest object.  The first time this method
   // is called, a UnitTest object is constructed and returned.
@@ -1398,7 +1398,7 @@ AssertionResult CmpHelperEQ(const char* lhs_expression,
   return CmpHelperEQFailure(lhs_expression, rhs_expression, lhs, rhs);
 }
 
-class EqHelper {
+class [[nodiscard]] EqHelper {
  public:
   // This templatized version is for the general case.
   template <
@@ -1614,7 +1614,7 @@ using GoogleTest_NotSupported_OnFunctionReturningNonVoid = void;
 
 // INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
 // A class that enables one to stream messages to assertion macros
-class GTEST_API_ AssertHelper {
+class GTEST_API_ [[nodiscard]] AssertHelper {
  public:
   // Constructor.
   AssertHelper(TestPartResult::Type type, const char* file, int line,
@@ -1689,7 +1689,7 @@ class GTEST_API_ AssertHelper {
 // INSTANTIATE_TEST_SUITE_P(OneToTenRange, FooTest, ::testing::Range(1, 10));
 
 template <typename T>
-class WithParamInterface {
+class [[nodiscard]] WithParamInterface {
  public:
   typedef T ParamType;
   virtual ~WithParamInterface() = default;
@@ -1723,7 +1723,8 @@ const T* WithParamInterface<T>::parameter_ = nullptr;
 // WithParamInterface, and can just inherit from ::testing::TestWithParam.
 
 template <typename T>
-class TestWithParam : public Test, public WithParamInterface<T> {};
+class [[nodiscard]] TestWithParam : public Test,
+                                    public WithParamInterface<T> {};
 
 // Macros for indicating success/failure in test code.
 
@@ -2071,7 +2072,7 @@ GTEST_API_ AssertionResult DoubleLE(const char* expr1, const char* expr2,
 // Example:
 //   testing::ScopedTrace trace("file.cc", 123, "message");
 //
-class GTEST_API_ ScopedTrace {
+class GTEST_API_ [[nodiscard]] ScopedTrace {
  public:
   // The c'tor pushes the given source file location and message onto
   // a trace stack maintained by Google Test.
diff --git a/deps/googletest/include/gtest/internal/gtest-death-test-internal.h b/deps/googletest/include/gtest/internal/gtest-death-test-internal.h
index b363259ec60203..6013a57bfe9f69 100644
--- a/deps/googletest/include/gtest/internal/gtest-death-test-internal.h
+++ b/deps/googletest/include/gtest/internal/gtest-death-test-internal.h
@@ -96,7 +96,7 @@ GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
 //               by wait(2)
 // exit code:    The integer code passed to exit(3), _Exit(2), or
 //               returned from main()
-class GTEST_API_ DeathTest {
+class GTEST_API_ [[nodiscard]] DeathTest {
  public:
   // Create returns false if there was an error determining the
   // appropriate action to take for the current death test; for example,
@@ -172,7 +172,7 @@ class GTEST_API_ DeathTest {
 GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4251
 
 // Factory interface for death tests.  May be mocked out for testing.
-class DeathTestFactory {
+class [[nodiscard]] DeathTestFactory {
  public:
   virtual ~DeathTestFactory() = default;
   virtual bool Create(const char* statement,
@@ -181,7 +181,7 @@ class DeathTestFactory {
 };
 
 // A concrete DeathTestFactory implementation for normal use.
-class DefaultDeathTestFactory : public DeathTestFactory {
+class [[nodiscard]] DefaultDeathTestFactory : public DeathTestFactory {
  public:
   bool Create(const char* statement, Matcher<const std::string&> matcher,
               const char* file, int line, DeathTest** test) override;
@@ -256,19 +256,19 @@ GTEST_API_ bool ExitedUnsuccessfully(int exit_status);
 // must accept a streamed message even though the message is never printed.
 // The regex object is not evaluated, but it is used to prevent "unused"
 // warnings and to avoid an expression that doesn't compile in debug mode.
-#define GTEST_EXECUTE_STATEMENT_(statement, regex_or_matcher)    \
-  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                  \
-  if (::testing::internal::AlwaysTrue()) {                       \
-    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);   \
-  } else if (!::testing::internal::AlwaysTrue()) {               \
-    ::testing::internal::MakeDeathTestMatcher(regex_or_matcher); \
-  } else                                                         \
+#define GTEST_EXECUTE_STATEMENT_(statement, regex_or_matcher)          \
+  GTEST_AMBIGUOUS_ELSE_BLOCKER_                                        \
+  if (::testing::internal::AlwaysTrue()) {                             \
+    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement);         \
+  } else if (!::testing::internal::AlwaysTrue()) {                     \
+    (void)::testing::internal::MakeDeathTestMatcher(regex_or_matcher); \
+  } else                                                               \
     ::testing::Message()
 
 // A class representing the parsed contents of the
 // --gtest_internal_run_death_test flag, as it existed when
 // RUN_ALL_TESTS was called.
-class InternalRunDeathTestFlag {
+class [[nodiscard]] InternalRunDeathTestFlag {
  public:
   InternalRunDeathTestFlag(const std::string& a_file, int a_line, int an_index,
                            int a_write_fd)
diff --git a/deps/googletest/include/gtest/internal/gtest-filepath.h b/deps/googletest/include/gtest/internal/gtest-filepath.h
index 6dc47be54ad3e7..4dc00ee7b31503 100644
--- a/deps/googletest/include/gtest/internal/gtest-filepath.h
+++ b/deps/googletest/include/gtest/internal/gtest-filepath.h
@@ -67,7 +67,7 @@ namespace internal {
 // Names are NOT checked for syntax correctness -- no checking for illegal
 // characters, malformed paths, etc.
 
-class GTEST_API_ FilePath {
+class GTEST_API_ [[nodiscard]] FilePath {
  public:
   FilePath() : pathname_("") {}
   FilePath(const FilePath& rhs) : pathname_(rhs.pathname_) {}
diff --git a/deps/googletest/include/gtest/internal/gtest-internal.h b/deps/googletest/include/gtest/internal/gtest-internal.h
index 808d89be91439a..4379137d77eba3 100644
--- a/deps/googletest/include/gtest/internal/gtest-internal.h
+++ b/deps/googletest/include/gtest/internal/gtest-internal.h
@@ -95,7 +95,7 @@
 #define GTEST_STRINGIFY_(...) GTEST_STRINGIFY_HELPER_(__VA_ARGS__, )
 
 namespace proto2 {
-class MessageLite;
+class [[nodiscard]] MessageLite;
 }
 
 namespace testing {
@@ -115,15 +115,15 @@ ::std::string PrintToString(const T& value);
 namespace internal {
 
 struct TraceInfo;    // Information about a trace point.
-class TestInfoImpl;  // Opaque implementation of TestInfo
-class UnitTestImpl;  // Opaque implementation of UnitTest
+class [[nodiscard]] TestInfoImpl;  // Opaque implementation of TestInfo
+class [[nodiscard]] UnitTestImpl;  // Opaque implementation of UnitTest
 
 // The text used in failure messages to indicate the start of the
 // stack trace.
 GTEST_API_ extern const char kStackTraceMarker[];
 
 // An IgnoredValue object can be implicitly constructed from ANY value.
-class IgnoredValue {
+class [[nodiscard]] IgnoredValue {
   struct Sink {};
 
  public:
@@ -155,7 +155,8 @@ GTEST_DISABLE_MSC_WARNINGS_PUSH_(
 // errors presumably detectable only at run time.  Since
 // std::runtime_error inherits from std::exception, many testing
 // frameworks know how to extract and print the message inside it.
-class GTEST_API_ GoogleTestFailureException : public ::std::runtime_error {
+class GTEST_API_ [[nodiscard]] GoogleTestFailureException
+    : public ::std::runtime_error {
  public:
   explicit GoogleTestFailureException(const TestPartResult& failure);
 };
@@ -242,7 +243,7 @@ GTEST_API_ std::string GetBoolAssertionFailureMessage(
 //
 //   RawType: the raw floating-point type (either float or double)
 template <typename RawType>
-class FloatingPoint {
+class [[nodiscard]] FloatingPoint {
  public:
   // Defines the unsigned integer type that has the same size as the
   // floating point number.
@@ -392,7 +393,7 @@ typedef FloatingPoint<double> Double;
 typedef const void* TypeId;
 
 template <typename T>
-class TypeIdHelper {
+class [[nodiscard]] TypeIdHelper {
  public:
   // dummy_ must not have a const type.  Otherwise an overly eager
   // compiler (e.g. MSVC 7.1 & 8.0) may try to merge
@@ -424,7 +425,7 @@ GTEST_API_ TypeId GetTestTypeId();
 
 // Defines the abstract factory interface that creates instances
 // of a Test object.
-class TestFactoryBase {
+class [[nodiscard]] TestFactoryBase {
  public:
   virtual ~TestFactoryBase() = default;
 
@@ -443,7 +444,7 @@ class TestFactoryBase {
 // This class provides implementation of TestFactoryBase interface.
 // It is used in TEST and TEST_F macros.
 template <class TestClass>
-class TestFactoryImpl : public TestFactoryBase {
+class [[nodiscard]] TestFactoryImpl : public TestFactoryBase {
  public:
   Test* CreateTest() override { return new TestClass; }
 };
@@ -570,7 +571,7 @@ GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
 /* class A needs to have dll-interface to be used by clients of class B */)
 
 // State of the definition of a type-parameterized test suite.
-class GTEST_API_ TypedTestSuitePState {
+class GTEST_API_ [[nodiscard]] TypedTestSuitePState {
  public:
   TypedTestSuitePState() : registered_(false) {}
 
@@ -685,7 +686,7 @@ std::vector<std::string> GenerateNames() {
 // Implementation note: The GTEST_TEMPLATE_ macro declares a template
 // template parameter.  It's defined in gtest-type-util.h.
 template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types>
-class TypeParameterizedTest {
+class [[nodiscard]] TypeParameterizedTest {
  public:
   // 'index' is the index of the test in the type list 'Types'
   // specified in INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, TestSuite,
@@ -723,7 +724,7 @@ class TypeParameterizedTest {
 
 // The base case for the compile time recursion.
 template <GTEST_TEMPLATE_ Fixture, class TestSel>
-class TypeParameterizedTest<Fixture, TestSel, internal::None> {
+class [[nodiscard]] TypeParameterizedTest<Fixture, TestSel, internal::None> {
  public:
   static bool Register(const char* /*prefix*/, CodeLocation,
                        const char* /*case_name*/, const char* /*test_names*/,
@@ -744,7 +745,7 @@ GTEST_API_ void RegisterTypeParameterizedTestSuiteInstantiation(
 // Test.  The return value is insignificant - we just need to return
 // something such that we can call this function in a namespace scope.
 template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types>
-class TypeParameterizedTestSuite {
+class [[nodiscard]] TypeParameterizedTestSuite {
  public:
   static bool Register(const char* prefix, CodeLocation code_location,
                        const TypedTestSuitePState* state, const char* case_name,
@@ -782,7 +783,7 @@ class TypeParameterizedTestSuite {
 
 // The base case for the compile time recursion.
 template <GTEST_TEMPLATE_ Fixture, typename Types>
-class TypeParameterizedTestSuite<Fixture, internal::None, Types> {
+class [[nodiscard]] TypeParameterizedTestSuite<Fixture, internal::None, Types> {
  public:
   static bool Register(const char* /*prefix*/, const CodeLocation&,
                        const TypedTestSuitePState* /*state*/,
@@ -838,7 +839,7 @@ struct TrueWithString {
 // doesn't use global state (and therefore can't interfere with user
 // code).  Unlike rand_r(), it's portable.  An LCG isn't very random,
 // but it's good enough for our purposes.
-class GTEST_API_ Random {
+class GTEST_API_ [[nodiscard]] Random {
  public:
   static const uint32_t kMaxRange = 1u << 31;
 
@@ -864,7 +865,7 @@ class GTEST_API_ Random {
 // that's true if and only if T has methods DebugString() and ShortDebugString()
 // that return std::string.
 template <typename T>
-class HasDebugStringAndShortDebugString {
+class [[nodiscard]] HasDebugStringAndShortDebugString {
  private:
   template <typename C>
   static auto CheckDebugString(C*) -> typename std::is_same<
@@ -1064,7 +1065,7 @@ struct RelationToSourceCopy {};
 // this requirement.  Element can be an array type itself (hence
 // multi-dimensional arrays are supported).
 template <typename Element>
-class NativeArray {
+class [[nodiscard]] NativeArray {
  public:
   // STL-style container typedefs.
   typedef Element value_type;
@@ -1150,7 +1151,7 @@ struct ElemFromList {
 struct FlatTupleConstructTag {};
 
 template <typename... T>
-class FlatTuple;
+class [[nodiscard]] FlatTuple;
 
 template <typename Derived, size_t I>
 struct FlatTupleElemBase;
@@ -1209,7 +1210,7 @@ struct FlatTupleBase<FlatTuple<T...>, std::index_sequence<Idx...>>
 // std::make_index_sequence, on the other hand, it is recursive but with an
 // instantiation depth of O(ln(N)).
 template <typename... T>
-class FlatTuple
+class [[nodiscard]] FlatTuple
     : private FlatTupleBase<FlatTuple<T...>,
                             std::make_index_sequence<sizeof...(T)>> {
   using Indices =
@@ -1317,7 +1318,7 @@ struct tuple_size<testing::internal::FlatTuple<Ts...>>
 namespace testing {
 namespace internal {
 
-class NeverThrown {
+class [[nodiscard]] NeverThrown {
  public:
   const char* what() const noexcept {
     return "this exception should never be thrown";
diff --git a/deps/googletest/include/gtest/internal/gtest-param-util.h b/deps/googletest/include/gtest/internal/gtest-param-util.h
index a092a86adab27d..716779346a012d 100644
--- a/deps/googletest/include/gtest/internal/gtest-param-util.h
+++ b/deps/googletest/include/gtest/internal/gtest-param-util.h
@@ -90,14 +90,14 @@ GTEST_API_ void ReportInvalidTestSuiteType(const char* test_suite_name,
                                            const CodeLocation& code_location);
 
 template <typename>
-class ParamGeneratorInterface;
+class [[nodiscard]] ParamGeneratorInterface;
 template <typename>
-class ParamGenerator;
+class [[nodiscard]] ParamGenerator;
 
 // Interface for iterating over elements provided by an implementation
 // of ParamGeneratorInterface<T>.
 template <typename T>
-class ParamIteratorInterface {
+class [[nodiscard]] ParamIteratorInterface {
  public:
   virtual ~ParamIteratorInterface() = default;
   // A pointer to the base generator instance.
@@ -127,7 +127,7 @@ class ParamIteratorInterface {
 // ParamGeneratorInterface<T>. It wraps ParamIteratorInterface<T>
 // and implements the const forward iterator concept.
 template <typename T>
-class ParamIterator {
+class [[nodiscard]] ParamIterator {
  public:
   typedef T value_type;
   typedef const T& reference;
@@ -169,7 +169,7 @@ class ParamIterator {
 // ParamGeneratorInterface<T> is the binary interface to access generators
 // defined in other translation units.
 template <typename T>
-class ParamGeneratorInterface {
+class [[nodiscard]] ParamGeneratorInterface {
  public:
   typedef T ParamType;
 
@@ -186,7 +186,7 @@ class ParamGeneratorInterface {
 // ParamGeneratorInterface<T> instance is shared among all copies
 // of the original object. This is possible because that instance is immutable.
 template <typename T>
-class ParamGenerator {
+class [[nodiscard]] ParamGenerator {
  public:
   typedef ParamIterator<T> iterator;
 
@@ -210,7 +210,7 @@ class ParamGenerator {
 // operator<().
 // This class is used in the Range() function.
 template <typename T, typename IncrementT>
-class RangeGenerator : public ParamGeneratorInterface<T> {
+class [[nodiscard]] RangeGenerator : public ParamGeneratorInterface<T> {
  public:
   RangeGenerator(T begin, T end, IncrementT step)
       : begin_(begin),
@@ -296,7 +296,8 @@ class RangeGenerator : public ParamGeneratorInterface<T> {
 // since the source can be located on the stack, and the generator
 // is likely to persist beyond that stack frame.
 template <typename T>
-class ValuesInIteratorRangeGenerator : public ParamGeneratorInterface<T> {
+class [[nodiscard]] ValuesInIteratorRangeGenerator
+    : public ParamGeneratorInterface<T> {
  public:
   template <typename ForwardIterator>
   ValuesInIteratorRangeGenerator(ForwardIterator begin, ForwardIterator end)
@@ -396,7 +397,7 @@ void TestNotEmpty(const T&) {}
 // Stores a parameter value and later creates tests parameterized with that
 // value.
 template <class TestClass>
-class ParameterizedTestFactory : public TestFactoryBase {
+class [[nodiscard]] ParameterizedTestFactory : public TestFactoryBase {
  public:
   typedef typename TestClass::ParamType ParamType;
   explicit ParameterizedTestFactory(ParamType parameter)
@@ -418,7 +419,7 @@ class ParameterizedTestFactory : public TestFactoryBase {
 // TestMetaFactoryBase is a base class for meta-factories that create
 // test factories for passing into MakeAndRegisterTestInfo function.
 template <class ParamType>
-class TestMetaFactoryBase {
+class [[nodiscard]] TestMetaFactoryBase {
  public:
   virtual ~TestMetaFactoryBase() = default;
 
@@ -434,7 +435,7 @@ class TestMetaFactoryBase {
 // it for each Test/Parameter value combination. Thus it needs meta factory
 // creator class.
 template <class TestSuite>
-class TestMetaFactory
+class [[nodiscard]] TestMetaFactory
     : public TestMetaFactoryBase<typename TestSuite::ParamType> {
  public:
   using ParamType = typename TestSuite::ParamType;
@@ -460,7 +461,7 @@ class TestMetaFactory
 // in RegisterTests method. The ParameterizeTestSuiteRegistry class holds
 // a collection of pointers to the ParameterizedTestSuiteInfo objects
 // and calls RegisterTests() on each of them when asked.
-class ParameterizedTestSuiteInfoBase {
+class [[nodiscard]] ParameterizedTestSuiteInfoBase {
  public:
   virtual ~ParameterizedTestSuiteInfoBase() = default;
 
@@ -503,7 +504,8 @@ GTEST_API_ void InsertSyntheticTestCase(const std::string& name,
 // test suite. It registers tests with all values generated by all
 // generators when asked.
 template <class TestSuite>
-class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
+class [[nodiscard]] ParameterizedTestSuiteInfo
+    : public ParameterizedTestSuiteInfoBase {
  public:
   // ParamType and GeneratorCreationFunc are private types but are required
   // for declarations of public methods AddTestPattern() and
@@ -688,7 +690,7 @@ using ParameterizedTestCaseInfo = ParameterizedTestSuiteInfo<TestCase>;
 // ParameterizedTestSuiteInfoBase classes accessed by test suite names. TEST_P
 // and INSTANTIATE_TEST_SUITE_P macros use it to locate their corresponding
 // ParameterizedTestSuiteInfo descriptors.
-class ParameterizedTestSuiteRegistry {
+class [[nodiscard]] ParameterizedTestSuiteRegistry {
  public:
   ParameterizedTestSuiteRegistry() = default;
   ~ParameterizedTestSuiteRegistry() {
@@ -762,7 +764,7 @@ class ParameterizedTestSuiteRegistry {
 // Keep track of what type-parameterized test suite are defined and
 // where as well as which are intatiated. This allows susequently
 // identifying suits that are defined but never used.
-class TypeParameterizedTestSuiteRegistry {
+class [[nodiscard]] TypeParameterizedTestSuiteRegistry {
  public:
   // Add a suite definition
   void RegisterTestSuite(const char* test_suite_name,
@@ -801,7 +803,7 @@ namespace internal {
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4100)
 
 template <typename... Ts>
-class ValueArray {
+class [[nodiscard]] ValueArray {
  public:
   explicit ValueArray(Ts... v) : v_(FlatTupleConstructTag{}, std::move(v)...) {}
 
@@ -822,7 +824,7 @@ class ValueArray {
 GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4100
 
 template <typename... T>
-class CartesianProductGenerator
+class [[nodiscard]] CartesianProductGenerator
     : public ParamGeneratorInterface<::std::tuple<T...>> {
  public:
   typedef ::std::tuple<T...> ParamType;
@@ -939,7 +941,7 @@ class CartesianProductGenerator
 };
 
 template <class... Gen>
-class CartesianProductHolder {
+class [[nodiscard]] CartesianProductHolder {
  public:
   CartesianProductHolder(const Gen&... g) : generators_(g...) {}
   template <typename... T>
@@ -953,7 +955,8 @@ class CartesianProductHolder {
 };
 
 template <typename From, typename To, typename Func>
-class ParamGeneratorConverter : public ParamGeneratorInterface<To> {
+class [[nodiscard]] ParamGeneratorConverter
+    : public ParamGeneratorInterface<To> {
  public:
   ParamGeneratorConverter(ParamGenerator<From> gen, Func converter)  // NOLINT
       : generator_(std::move(gen)), converter_(std::move(converter)) {}
@@ -1023,7 +1026,7 @@ class ParamGeneratorConverter : public ParamGeneratorInterface<To> {
 template <class GeneratedT,
           typename StdFunction =
               std::function<const GeneratedT&(const GeneratedT&)>>
-class ParamConverterGenerator {
+class [[nodiscard]] ParamConverterGenerator {
  public:
   ParamConverterGenerator(ParamGenerator<GeneratedT> g)  // NOLINT
       : generator_(std::move(g)), converter_(Identity) {}
diff --git a/deps/googletest/include/gtest/internal/gtest-port.h b/deps/googletest/include/gtest/internal/gtest-port.h
index d433f05459c76a..f6394a00728205 100644
--- a/deps/googletest/include/gtest/internal/gtest-port.h
+++ b/deps/googletest/include/gtest/internal/gtest-port.h
@@ -827,6 +827,8 @@ typedef struct _RTL_CRITICAL_SECTION GTEST_CRITICAL_SECTION;
 #elif defined(GTEST_CREATE_SHARED_LIBRARY) && GTEST_CREATE_SHARED_LIBRARY
 #define GTEST_API_ __declspec(dllexport)
 #endif
+#elif GTEST_INTERNAL_HAVE_CPP_ATTRIBUTE(gnu::visibility)
+#define GTEST_API_ [[gnu::visibility("default")]]
 #elif GTEST_HAVE_ATTRIBUTE_(visibility)
 #define GTEST_API_ __attribute__((visibility("default")))
 #endif  // _MSC_VER
@@ -917,7 +919,7 @@ namespace internal {
 // A secret type that Google Test users don't know about.  It has no
 // accessible constructors on purpose.  Therefore it's impossible to create a
 // Secret object, which is what we want.
-class Secret {
+class [[nodiscard]] Secret {
   Secret(const Secret&) = delete;
 };
 
@@ -932,7 +934,7 @@ GTEST_API_ bool IsTrue(bool condition);
 // This is almost `using RE = ::RE2`, except it is copy-constructible, and it
 // needs to disambiguate the `std::string`, `absl::string_view`, and `const
 // char*` constructors.
-class GTEST_API_ RE {
+class GTEST_API_ [[nodiscard]] RE {
  public:
   RE(absl::string_view regex) : regex_(regex) {}                  // NOLINT
   RE(const char* regex) : RE(absl::string_view(regex)) {}         // NOLINT
@@ -958,7 +960,7 @@ GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
 
 // A simple C++ wrapper for <regex.h>.  It uses the POSIX Extended
 // Regular Expression syntax.
-class GTEST_API_ RE {
+class GTEST_API_ [[nodiscard]] RE {
  public:
   // A copy constructor is required by the Standard to initialize object
   // references from r-values.
@@ -1027,7 +1029,7 @@ enum GTestLogSeverity { GTEST_INFO, GTEST_WARNING, GTEST_ERROR, GTEST_FATAL };
 // Formats log entry severity, provides a stream object for streaming the
 // log message, and terminates the message with a newline when going out of
 // scope.
-class GTEST_API_ GTestLog {
+class GTEST_API_ [[nodiscard]] GTestLog {
  public:
   GTestLog(GTestLogSeverity severity, const char* file, int line);
 
@@ -1190,7 +1192,7 @@ void ClearInjectableArgvs();
 #ifdef GTEST_OS_WINDOWS
 // Provides leak-safe Windows kernel handle ownership.
 // Used in death tests and in threading support.
-class GTEST_API_ AutoHandle {
+class GTEST_API_ [[nodiscard]] AutoHandle {
  public:
   // Assume that Win32 HANDLE type is equivalent to void*. Doing so allows us to
   // avoid including <windows.h> in this header file. Including <windows.h> is
@@ -1234,7 +1236,7 @@ GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
 // This class is only for testing Google Test's own constructs. Do not
 // use it in user tests, either directly or indirectly.
 // TODO(b/203539622): Replace unconditionally with absl::Notification.
-class GTEST_API_ Notification {
+class GTEST_API_ [[nodiscard]] Notification {
  public:
   Notification() : notified_(false) {}
   Notification(const Notification&) = delete;
@@ -1273,7 +1275,7 @@ GTEST_DISABLE_MSC_WARNINGS_POP_()  // 4251
 // in order to call its Run(). Introducing ThreadWithParamBase as a
 // non-templated base class for ThreadWithParam allows us to bypass this
 // problem.
-class ThreadWithParamBase {
+class [[nodiscard]] ThreadWithParamBase {
  public:
   virtual ~ThreadWithParamBase() = default;
   virtual void Run() = 0;
@@ -1303,7 +1305,7 @@ extern "C" inline void* ThreadFuncWithCLinkage(void* thread) {
 // These classes are only for testing Google Test's own constructs. Do
 // not use them in user tests, either directly or indirectly.
 template <typename T>
-class ThreadWithParam : public ThreadWithParamBase {
+class [[nodiscard]] ThreadWithParam : public ThreadWithParamBase {
  public:
   typedef void UserThreadFunc(T);
 
@@ -1369,7 +1371,7 @@ class ThreadWithParam : public ThreadWithParamBase {
 //   GTEST_DECLARE_STATIC_MUTEX_(g_some_mutex);
 //
 // (A non-static Mutex is defined/declared in the usual way).
-class GTEST_API_ Mutex {
+class GTEST_API_ [[nodiscard]] Mutex {
  public:
   enum MutexType { kStatic = 0, kDynamic = 1 };
   // We rely on kStaticMutex being 0 as it is to what the linker initializes
@@ -1422,7 +1424,7 @@ class GTEST_API_ Mutex {
 // platforms. That macro is used as a defensive measure to prevent against
 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
 // "MutexLock l(&mu)".  Hence the typedef trick below.
-class GTestMutexLock {
+class [[nodiscard]] GTestMutexLock {
  public:
   explicit GTestMutexLock(Mutex& mutex) : mutex_(mutex) { mutex_.lock(); }
   ~GTestMutexLock() { mutex_.unlock(); }
@@ -1438,14 +1440,14 @@ typedef GTestMutexLock MutexLock;
 
 // Base class for ValueHolder<T>.  Allows a caller to hold and delete a value
 // without knowing its type.
-class ThreadLocalValueHolderBase {
+class [[nodiscard]] ThreadLocalValueHolderBase {
  public:
   virtual ~ThreadLocalValueHolderBase() {}
 };
 
 // Provides a way for a thread to send notifications to a ThreadLocal
 // regardless of its parameter type.
-class ThreadLocalBase {
+class [[nodiscard]] ThreadLocalBase {
  public:
   // Creates a new ValueHolder<T> object holding a default value passed to
   // this ThreadLocal<T>'s constructor and returns it.  It is the caller's
@@ -1465,7 +1467,7 @@ class ThreadLocalBase {
 // Maps a thread to a set of ThreadLocals that have values instantiated on that
 // thread and notifies them when the thread exits.  A ThreadLocal instance is
 // expected to persist until all threads it has values on have terminated.
-class GTEST_API_ ThreadLocalRegistry {
+class GTEST_API_ [[nodiscard]] ThreadLocalRegistry {
  public:
   // Registers thread_local_instance as having value on the current thread.
   // Returns a value that can be used to identify the thread from other threads.
@@ -1477,7 +1479,7 @@ class GTEST_API_ ThreadLocalRegistry {
       const ThreadLocalBase* thread_local_instance);
 };
 
-class GTEST_API_ ThreadWithParamBase {
+class GTEST_API_ [[nodiscard]] ThreadWithParamBase {
  public:
   void Join();
 
@@ -1497,7 +1499,7 @@ class GTEST_API_ ThreadWithParamBase {
 
 // Helper class for testing Google Test's multi-threading constructs.
 template <typename T>
-class ThreadWithParam : public ThreadWithParamBase {
+class [[nodiscard]] ThreadWithParam : public ThreadWithParamBase {
  public:
   typedef void UserThreadFunc(T);
 
@@ -1552,7 +1554,7 @@ class ThreadWithParam : public ThreadWithParamBase {
 // object managed by Google Test will be leaked as long as all threads
 // using Google Test have exited when main() returns.
 template <typename T>
-class ThreadLocal : public ThreadLocalBase {
+class [[nodiscard]] ThreadLocal : public ThreadLocalBase {
  public:
   ThreadLocal() : default_factory_(new DefaultValueHolderFactory()) {}
   explicit ThreadLocal(const T& value)
@@ -1637,7 +1639,7 @@ class ThreadLocal : public ThreadLocalBase {
 #elif GTEST_HAS_PTHREAD
 
 // MutexBase and Mutex implement mutex on pthreads-based platforms.
-class MutexBase {
+class [[nodiscard]] MutexBase {
  public:
   // Acquires this mutex.
   void lock() {
@@ -1695,7 +1697,7 @@ class MutexBase {
 
 // The Mutex class can only be used for mutexes created at runtime. It
 // shares its API with MutexBase otherwise.
-class Mutex : public MutexBase {
+class [[nodiscard]] Mutex : public MutexBase {
  public:
   Mutex() {
     GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, nullptr));
@@ -1713,7 +1715,7 @@ class Mutex : public MutexBase {
 // platforms. That macro is used as a defensive measure to prevent against
 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
 // "MutexLock l(&mu)".  Hence the typedef trick below.
-class GTestMutexLock {
+class [[nodiscard]] GTestMutexLock {
  public:
   explicit GTestMutexLock(MutexBase& mutex) : mutex_(mutex) { mutex_.lock(); }
   ~GTestMutexLock() { mutex_.unlock(); }
@@ -1733,7 +1735,7 @@ typedef GTestMutexLock MutexLock;
 // C-linkage.  Therefore it cannot be templatized to access
 // ThreadLocal<T>.  Hence the need for class
 // ThreadLocalValueHolderBase.
-class GTEST_API_ ThreadLocalValueHolderBase {
+class GTEST_API_ [[nodiscard]] ThreadLocalValueHolderBase {
  public:
   virtual ~ThreadLocalValueHolderBase() = default;
 };
@@ -1746,7 +1748,7 @@ extern "C" inline void DeleteThreadLocalValue(void* value_holder) {
 
 // Implements thread-local storage on pthreads-based systems.
 template <typename T>
-class GTEST_API_ ThreadLocal {
+class GTEST_API_ [[nodiscard]] ThreadLocal {
  public:
   ThreadLocal()
       : key_(CreateKey()), default_factory_(new DefaultValueHolderFactory()) {}
@@ -1859,7 +1861,7 @@ class GTEST_API_ ThreadLocal {
 // mutex is not supported - using Google Test in multiple threads is not
 // supported on such platforms.
 
-class Mutex {
+class [[nodiscard]] Mutex {
  public:
   Mutex() {}
   void lock() {}
@@ -1877,7 +1879,7 @@ class Mutex {
 // platforms. That macro is used as a defensive measure to prevent against
 // inadvertent misuses of MutexLock like "MutexLock(&mu)" rather than
 // "MutexLock l(&mu)".  Hence the typedef trick below.
-class GTestMutexLock {
+class [[nodiscard]] GTestMutexLock {
  public:
   explicit GTestMutexLock(Mutex&) {}  // NOLINT
 };
@@ -1885,7 +1887,7 @@ class GTestMutexLock {
 typedef GTestMutexLock MutexLock;
 
 template <typename T>
-class GTEST_API_ ThreadLocal {
+class GTEST_API_ [[nodiscard]] ThreadLocal {
  public:
   ThreadLocal() : value_() {}
   explicit ThreadLocal(const T& value) : value_(value) {}
@@ -2193,7 +2195,7 @@ constexpr BiggestInt kMaxBiggestInt = (std::numeric_limits<BiggestInt>::max)();
 // needs.  Other types can be easily added in the future if need
 // arises.
 template <size_t size>
-class TypeWithSize {
+class [[nodiscard]] TypeWithSize {
  public:
   // This prevents the user from using TypeWithSize<N> with incorrect
   // values of N.
@@ -2202,7 +2204,7 @@ class TypeWithSize {
 
 // The specialization for size 4.
 template <>
-class TypeWithSize<4> {
+class [[nodiscard]] TypeWithSize<4> {
  public:
   using Int = std::int32_t;
   using UInt = std::uint32_t;
@@ -2210,7 +2212,7 @@ class TypeWithSize<4> {
 
 // The specialization for size 8.
 template <>
-class TypeWithSize<8> {
+class [[nodiscard]] TypeWithSize<8> {
  public:
   using Int = std::int64_t;
   using UInt = std::uint64_t;
diff --git a/deps/googletest/include/gtest/internal/gtest-string.h b/deps/googletest/include/gtest/internal/gtest-string.h
index 7c05b58339f681..2363034fc0dbcb 100644
--- a/deps/googletest/include/gtest/internal/gtest-string.h
+++ b/deps/googletest/include/gtest/internal/gtest-string.h
@@ -60,7 +60,7 @@ namespace testing {
 namespace internal {
 
 // String - an abstract class holding static string utilities.
-class GTEST_API_ String {
+class GTEST_API_ [[nodiscard]] String {
  public:
   // Static utility methods
 
@@ -166,7 +166,7 @@ class GTEST_API_ String {
 
  private:
   String();  // Not meant to be instantiated.
-};           // class String
+};  // class String
 
 // Gets the content of the stringstream's buffer as an std::string.  Each '\0'
 // character in the buffer is replaced with "\\0".