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--- contrib/libs/apache/arrow/cpp/src/arrow/result.h (2e0006a95f0ad665eca5b48386842a8a0354061f)
+++ contrib/libs/apache/arrow/cpp/src/arrow/result.h (working tree)
@@ -385,7 +385,7 @@ class ARROW_MUST_USE_TYPE Result : public util::EqualityComparable<Result<T>> {
/// Apply a function to the internally stored value to produce a new result or propagate
/// the stored error.
template <typename M>
- typename EnsureResult<typename std::result_of<M && (T)>::type>::type Map(M&& m) && {
+ typename EnsureResult<decltype(std::declval<M&&>()(std::declval<T&&>()))>::type Map(M&& m) && {
if (!ok()) {
return status();
}
@@ -395,7 +395,7 @@ class ARROW_MUST_USE_TYPE Result : public util::EqualityComparable<Result<T>> {
/// Apply a function to the internally stored value to produce a new result or propagate
/// the stored error.
template <typename M>
- typename EnsureResult<typename std::result_of<M && (const T&)>::type>::type Map(
+ typename EnsureResult<decltype(std::declval<M&&>()(std::declval<const T&>()))>::type Map(
M&& m) const& {
if (!ok()) {
return status();
--- contrib/libs/apache/arrow/cpp/src/arrow/util/bitmap_generate.h (2e0006a95f0ad665eca5b48386842a8a0354061f)
+++ contrib/libs/apache/arrow/cpp/src/arrow/util/bitmap_generate.h (working tree)
@@ -62,7 +62,7 @@ void GenerateBits(uint8_t* bitmap, int64_t start_offset, int64_t length, Generat
template <class Generator>
void GenerateBitsUnrolled(uint8_t* bitmap, int64_t start_offset, int64_t length,
Generator&& g) {
- static_assert(std::is_same<typename std::result_of<Generator && ()>::type, bool>::value,
+ static_assert(std::is_same<decltype(std::declval<Generator>()()), bool>::value,
"Functor passed to GenerateBitsUnrolled must return bool");
if (length == 0) {
--- contrib/libs/apache/arrow/cpp/src/arrow/util/functional.h (2e0006a95f0ad665eca5b48386842a8a0354061f)
+++ contrib/libs/apache/arrow/cpp/src/arrow/util/functional.h (working tree)
@@ -129,7 +129,7 @@ class FnOnce<R(A...)> {
template <typename Fn,
typename = typename std::enable_if<std::is_convertible<
- typename std::result_of<Fn && (A...)>::type, R>::value>::type>
+ decltype(std::declval<Fn&&>()(std::declval<A>()...)), R>::value>::type>
FnOnce(Fn fn) : impl_(new FnImpl<Fn>(std::move(fn))) { // NOLINT runtime/explicit
}
--- contrib/libs/apache/arrow/cpp/src/arrow/util/future.h (2e0006a95f0ad665eca5b48386842a8a0354061f)
+++ contrib/libs/apache/arrow/cpp/src/arrow/util/future.h (working tree)
@@ -47,8 +47,17 @@ struct is_future : std::false_type {};
template <typename T>
struct is_future<Future<T>> : std::true_type {};
+template <typename Signature, typename Enable = void>
+struct result_of;
+
+template <typename Fn, typename... A>
+struct result_of<Fn(A...),
+ std::void_t<decltype(std::declval<Fn>()(std::declval<A>()...))>> {
+ using type = decltype(std::declval<Fn>()(std::declval<A>()...));
+};
+
template <typename Signature>
-using result_of_t = typename std::result_of<Signature>::type;
+using result_of_t = typename result_of<Signature>::type;
// Helper to find the synchronous counterpart for a Future
template <typename T>
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