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--- a/cpp/src/arrow/array/builder_binary.h
+++ b/cpp/src/arrow/array/builder_binary.h
@@ -53,7 +53,7 @@ class BaseBinaryBuilder : public ArrayBuilder {
explicit BaseBinaryBuilder(MemoryPool* pool = default_memory_pool())
: ArrayBuilder(pool), offsets_builder_(pool), value_data_builder_(pool) {}
- BaseBinaryBuilder(const std::shared_ptr<DataType>& type, MemoryPool* pool)
+ BaseBinaryBuilder(const std::shared_ptr<DataType>& /*type*/, MemoryPool* pool)
: BaseBinaryBuilder(pool) {}
Status Append(const uint8_t* value, offset_type length) {
--- a/cpp/src/arrow/array/builder_dict.h
+++ b/cpp/src/arrow/array/builder_dict.h
@@ -400,11 +400,11 @@ class DictionaryBuilderBase<BuilderType, NullType> : public ArrayBuilder {
DictionaryBuilderBase(
enable_if_t<std::is_base_of<AdaptiveIntBuilderBase, B>::value, uint8_t>
start_int_size,
- const std::shared_ptr<DataType>& value_type,
+ const std::shared_ptr<DataType>& /*value_type*/,
MemoryPool* pool = default_memory_pool())
: ArrayBuilder(pool), indices_builder_(start_int_size, pool) {}
- explicit DictionaryBuilderBase(const std::shared_ptr<DataType>& value_type,
+ explicit DictionaryBuilderBase(const std::shared_ptr<DataType>& /*value_type*/,
MemoryPool* pool = default_memory_pool())
: ArrayBuilder(pool), indices_builder_(pool) {}
@@ -418,7 +418,7 @@ class DictionaryBuilderBase<BuilderType, NullType> : public ArrayBuilder {
explicit DictionaryBuilderBase(MemoryPool* pool = default_memory_pool())
: ArrayBuilder(pool), indices_builder_(pool) {}
- explicit DictionaryBuilderBase(const std::shared_ptr<Array>& dictionary,
+ explicit DictionaryBuilderBase(const std::shared_ptr<Array>& /*dictionary*/,
MemoryPool* pool = default_memory_pool())
: ArrayBuilder(pool), indices_builder_(pool) {}
--- a/cpp/src/arrow/array/builder_primitive.h
+++ b/cpp/src/arrow/array/builder_primitive.h
@@ -31,7 +31,7 @@ namespace arrow {
class ARROW_EXPORT NullBuilder : public ArrayBuilder {
public:
explicit NullBuilder(MemoryPool* pool = default_memory_pool()) : ArrayBuilder(pool) {}
- explicit NullBuilder(const std::shared_ptr<DataType>& type,
+ explicit NullBuilder(const std::shared_ptr<DataType>& /*type*/,
MemoryPool* pool = default_memory_pool())
: NullBuilder(pool) {}
--- a/cpp/src/arrow/util/mutex.h
+++ b/cpp/src/arrow/util/mutex.h
@@ -37,7 +37,7 @@ class ARROW_EXPORT Mutex {
/// A Guard is falsy if a lock could not be acquired.
class ARROW_EXPORT Guard {
public:
- Guard() : locked_(NULLPTR, [](Mutex* mutex) {}) {}
+ Guard() : locked_(NULLPTR, [](Mutex* /* mutex */) {}) {}
Guard(Guard&&) = default;
Guard& operator=(Guard&&) = default;
--- a/cpp/src/arrow/util/variant.h
+++ b/cpp/src/arrow/util/variant.h
@@ -144,11 +144,11 @@ struct VariantImpl<Variant<T...>> : VariantStorage<T...> {
void copy_to(...) const {}
template <typename R, typename Visitor>
- [[noreturn]] R visit_const(Visitor&& visitor) const {
+ [[noreturn]] R visit_const(Visitor&& /* visitor */) const {
std::terminate();
}
template <typename R, typename Visitor>
- [[noreturn]] R visit_mutable(Visitor&& visitor) {
+ [[noreturn]] R visit_mutable(Visitor&& /* visitor */) {
std::terminate();
}
};
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