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Posted to jira@arrow.apache.org by "Yaron Gvili (Jira)" <ji...@apache.org> on 2022/10/23 06:44:00 UTC
[jira] [Created] (ARROW-18135) [C++] Avoid warnings that ExecBatch::length may be uninitialized
Yaron Gvili created ARROW-18135:
-----------------------------------
Summary: [C++] Avoid warnings that ExecBatch::length may be uninitialized
Key: ARROW-18135
URL: https://issues.apache.org/jira/browse/ARROW-18135
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Yaron Gvili
Assignee: Yaron Gvili
Here is a build log of the master branch that shows the warnings:
{code:java}
[131/534] Building CXX object src/arrow/CMakeFiles/arrow_objlib.dir/compute/exec/exec_plan.cc.o
In file included from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/exec_plan.cc:25:
In constructor ‘arrow::compute::ExecBatch::ExecBatch(arrow::compute::ExecBatch&&)’,
inlined from ‘arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/exec_plan.cc:605:73,
inlined from ‘_OIter std::transform(_IIter, _IIter, _OIter, _UnaryOperation) [with _IIter = std::move_iterator<__gnu_cxx::__normal_iterator<std::optional<arrow::compute::ExecBatch>*, std::vector<std::optional<arrow::compute::ExecBatch>, std::allocator<std::optional<arrow::compute::ExecBatch> > > > >; _OIter = std::back_insert_iterator<std::vector<arrow::compute::ExecBatch> >; _UnaryOperation = arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>]’ at /usr/include/c++/11/bits/stl_algo.h:4296:12,
inlined from ‘std::vector<To> arrow::internal::MapVector(Fn&&, std::vector<_ValT>&&) [with Fn = arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>; From = std::optional<arrow::compute::ExecBatch>; To = arrow::compute::ExecBatch]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/vector.h:102:17,
inlined from ‘arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()>’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/exec_plan.cc:604:44,
inlined from ‘typename std::enable_if<(((! std::is_void<ContinueResult>::value) && (! arrow::detail::is_future<ContinueResult>::value)) && ((! NextFuture::is_empty) || std::is_same<ContinueResult, arrow::Status>::value))>::type arrow::detail::ContinueFuture::operator()(NextFuture, ContinueFunc&&, Args&& ...) const [with ContinueFunc = arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()>; Args = {}; ContinueResult = arrow::Result<std::vector<arrow::compute::ExecBatch> >; NextFuture = arrow::Future<std::vector<arrow::compute::ExecBatch> >]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:150:22,
inlined from ‘void arrow::detail::ContinueFuture::IgnoringArgsIf(std::true_type, NextFuture&&, ContinueFunc&&, Args&& ...) const [with ContinueFunc = arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()>; NextFuture = arrow::Future<std::vector<arrow::compute::ExecBatch> >; Args = {const arrow::internal::Empty&}]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:188:15,
inlined from ‘void arrow::Future<T>::ThenOnComplete<OnSuccess, OnFailure>::operator()(const arrow::Result<T>&) && [with OnSuccess = arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()>; OnFailure = arrow::Future<>::PassthruOnFailure<arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()> >; T = arrow::internal::Empty]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:545:39:
/mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec.h:179:21: warning: ‘*(arrow::compute::ExecBatch*)((char*)&<unnamed> + offsetof(std::optional<arrow::compute::ExecBatch>,std::optional<arrow::compute::ExecBatch>::<unnamed>.std::_Optional_base<arrow::compute::ExecBatch, false, false>::<unnamed>)).arrow::compute::ExecBatch::length’ may be used uninitialized [-Wmaybe-uninitialized]
179 | struct ARROW_EXPORT ExecBatch {
| ^~~~~~~~~
In file included from /usr/include/c++/11/functional:65,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/exec_plan.h:22,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/exec_plan.cc:18:
/usr/include/c++/11/bits/stl_algo.h: In member function ‘void arrow::Future<T>::ThenOnComplete<OnSuccess, OnFailure>::operator()(const arrow::Result<T>&) && [with OnSuccess = arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()>; OnFailure = arrow::Future<>::PassthruOnFailure<arrow::compute::DeclarationToExecBatchesAsync(arrow::compute::Declaration, arrow::compute::ExecContext*)::<lambda()> >; T = arrow::internal::Empty]’:
/usr/include/c++/11/bits/stl_algo.h:4296:31: note: ‘<anonymous>’ declared here
4296 | *__result = __unary_op(*__first);
| ~~~~~~~~~~^~~~~~~~~~
[247/534] Building CXX object src/arrow/CMakeFiles/arrow_testing_objlib.dir/compute/exec/test_util.cc.o
In file included from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/test_util.h:29,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/test_util.cc:18:
In constructor ‘arrow::compute::ExecBatch::ExecBatch(arrow::compute::ExecBatch&&)’,
inlined from ‘arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/test_util.cc:192:73,
inlined from ‘_OIter std::transform(_IIter, _IIter, _OIter, _UnaryOperation) [with _IIter = std::move_iterator<__gnu_cxx::__normal_iterator<std::optional<arrow::compute::ExecBatch>*, std::vector<std::optional<arrow::compute::ExecBatch>, std::allocator<std::optional<arrow::compute::ExecBatch> > > > >; _OIter = std::back_insert_iterator<std::vector<arrow::compute::ExecBatch> >; _UnaryOperation = arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>]’ at /usr/include/c++/11/bits/stl_algo.h:4296:12,
inlined from ‘std::vector<To> arrow::internal::MapVector(Fn&&, std::vector<From>&&) [with Fn = arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>; From = std::optional<arrow::compute::ExecBatch>; To = arrow::compute::ExecBatch]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/vector.h:102:17,
inlined from ‘arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/test_util.cc:191:44,
inlined from ‘typename std::enable_if<(((! std::is_void<ContinueResult>::value) && (! arrow::detail::is_future<ContinueResult>::value)) && ((! NextFuture::is_empty) || std::is_same<ContinueResult, arrow::Status>::value))>::type arrow::detail::ContinueFuture::operator()(NextFuture, ContinueFunc&&, Args&& ...) const [with ContinueFunc = arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>; Args = {}; ContinueResult = arrow::Result<std::vector<arrow::compute::ExecBatch> >; NextFuture = arrow::Future<std::vector<arrow::compute::ExecBatch> >]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:150:22,
inlined from ‘void arrow::detail::ContinueFuture::IgnoringArgsIf(std::true_type, NextFuture&&, ContinueFunc&&, Args&& ...) const [with ContinueFunc = arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>; NextFuture = arrow::Future<std::vector<arrow::compute::ExecBatch> >; Args = {const arrow::internal::Empty&}]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:188:15,
inlined from ‘void arrow::Future<T>::ThenOnComplete<OnSuccess, OnFailure>::operator()(const arrow::Result<T>&) && [with OnSuccess = arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>; OnFailure = arrow::Future<>::PassthruOnFailure<arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()> >; T = arrow::internal::Empty]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:545:39,
inlined from ‘void arrow::Future<T>::WrapResultyOnComplete::Callback<OnComplete>::operator()(const arrow::FutureImpl&) && [with OnComplete = arrow::Future<>::ThenOnComplete<arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()> > >; T = arrow::internal::Empty]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:442:31,
inlined from ‘R arrow::internal::FnOnce<R(A ...)>::FnImpl<Fn>::invoke(A&& ...) [with Fn = arrow::Future<>::WrapResultyOnComplete::Callback<arrow::Future<>::ThenOnComplete<arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()> > > >; R = void; A = {const arrow::FutureImpl&}]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/functional.h:152:56:
/mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec.h:179:21: warning: ‘*(arrow::compute::ExecBatch*)((char*)&<unnamed> + offsetof(std::optional<arrow::compute::ExecBatch>,std::optional<arrow::compute::ExecBatch>::<unnamed>.std::_Optional_base<arrow::compute::ExecBatch, false, false>::<unnamed>)).arrow::compute::ExecBatch::length’ may be used uninitialized [-Wmaybe-uninitialized]
179 | struct ARROW_EXPORT ExecBatch {
| ^~~~~~~~~
In file included from /usr/include/c++/11/algorithm:62,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/testing/gtest_util.h:20,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/test_util.h:20,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/test_util.cc:18:
/usr/include/c++/11/bits/stl_algo.h: In member function ‘R arrow::internal::FnOnce<R(A ...)>::FnImpl<Fn>::invoke(A&& ...) [with Fn = arrow::Future<>::WrapResultyOnComplete::Callback<arrow::Future<>::ThenOnComplete<arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::compute::StartAndCollect(arrow::compute::ExecPlan*, arrow::AsyncGenerator<std::optional<arrow::compute::ExecBatch> >)::<lambda()> > > >; R = void; A = {const arrow::FutureImpl&}]’:
/usr/include/c++/11/bits/stl_algo.h:4296:31: note: ‘<anonymous>’ declared here
4296 | *__result = __unary_op(*__first);
| ~~~~~~~~~~^~~~~~~~~~
[381/534] Building CXX object src/arrow/compute/kernels/CMakeFiles/arrow-compute-aggregate-test.dir/hash_aggregate_test.cc.o
In file included from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/kernel.h:32,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/function.h:27,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/api_aggregate.h:23,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/kernels/hash_aggregate_test.cc:31:
In constructor ‘arrow::compute::ExecBatch::ExecBatch(arrow::compute::ExecBatch&&)’,
inlined from ‘arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/kernels/hash_aggregate_test.cc:155:77,
inlined from ‘_OIter std::transform(_IIter, _IIter, _OIter, _UnaryOperation) [with _IIter = std::move_iterator<__gnu_cxx::__normal_iterator<std::optional<arrow::compute::ExecBatch>*, std::vector<std::optional<arrow::compute::ExecBatch>, std::allocator<std::optional<arrow::compute::ExecBatch> > > > >; _OIter = std::back_insert_iterator<std::vector<arrow::compute::ExecBatch> >; _UnaryOperation = arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>]’ at /usr/include/c++/11/bits/stl_algo.h:4296:12,
inlined from ‘std::vector<To> arrow::internal::MapVector(Fn&&, std::vector<_ValT>&&) [with Fn = arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>; From = std::optional<arrow::compute::ExecBatch>; To = arrow::compute::ExecBatch]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/vector.h:102:17,
inlined from ‘arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/kernels/hash_aggregate_test.cc:154:48,
inlined from ‘typename std::enable_if<(((! std::is_void<ContinueResult>::value) && (! arrow::detail::is_future<ContinueResult>::value)) && ((! NextFuture::is_empty) || std::is_same<ContinueResult, arrow::Status>::value))>::type arrow::detail::ContinueFuture::operator()(NextFuture, ContinueFunc&&, Args&& ...) const [with ContinueFunc = arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>; Args = {}; ContinueResult = arrow::Result<std::vector<arrow::compute::ExecBatch> >; NextFuture = arrow::Future<std::vector<arrow::compute::ExecBatch> >]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:150:22,
inlined from ‘void arrow::detail::ContinueFuture::IgnoringArgsIf(std::true_type, NextFuture&&, ContinueFunc&&, Args&& ...) const [with ContinueFunc = arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>; NextFuture = arrow::Future<std::vector<arrow::compute::ExecBatch> >; Args = {const arrow::internal::Empty&}]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:188:15,
inlined from ‘void arrow::Future<T>::ThenOnComplete<OnSuccess, OnFailure>::operator()(const arrow::Result<T>&) && [with OnSuccess = arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>; OnFailure = arrow::Future<>::PassthruOnFailure<arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()> >; T = arrow::internal::Empty]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:545:39,
inlined from ‘void arrow::Future<T>::WrapResultyOnComplete::Callback<OnComplete>::operator()(const arrow::FutureImpl&) && [with OnComplete = arrow::Future<>::ThenOnComplete<arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()> > >; T = arrow::internal::Empty]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:442:31,
inlined from ‘R arrow::internal::FnOnce<R(A ...)>::FnImpl<Fn>::invoke(A&& ...) [with Fn = arrow::Future<>::WrapResultyOnComplete::Callback<arrow::Future<>::ThenOnComplete<arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()> > > >; R = void; A = {const arrow::FutureImpl&}]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/functional.h:152:56:
/mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec.h:179:21: warning: ‘*(arrow::compute::ExecBatch*)((char*)&<unnamed> + offsetof(std::optional<arrow::compute::ExecBatch>,std::optional<arrow::compute::ExecBatch>::<unnamed>.std::_Optional_base<arrow::compute::ExecBatch, false, false>::<unnamed>)).arrow::compute::ExecBatch::length’ may be used uninitialized [-Wmaybe-uninitialized]
179 | struct ARROW_EXPORT ExecBatch {
| ^~~~~~~~~
In file included from /usr/include/c++/11/functional:65,
from /usr/include/gtest/gtest-printers.h:103,
from /usr/include/gtest/gtest-matchers.h:44,
from /usr/include/gtest/internal/gtest-death-test-internal.h:39,
from /usr/include/gtest/gtest-death-test.h:41,
from /usr/include/gtest/gtest.h:64,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/kernels/hash_aggregate_test.cc:18:
/usr/include/c++/11/bits/stl_algo.h: In member function ‘R arrow::internal::FnOnce<R(A ...)>::FnImpl<Fn>::invoke(A&& ...) [with Fn = arrow::Future<>::WrapResultyOnComplete::Callback<arrow::Future<>::ThenOnComplete<arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::compute::{anonymous}::GroupByUsingExecPlan(const arrow::compute::BatchesWithSchema&, const std::vector<std::__cxx11::basic_string<char> >&, const std::vector<arrow::compute::Aggregate>&, bool, arrow::compute::ExecContext*)::<lambda()> > > >; R = void; A = {const arrow::FutureImpl&}]’:
/usr/include/c++/11/bits/stl_algo.h:4296:31: note: ‘<anonymous>’ declared here
4296 | *__result = __unary_op(*__first);
| ~~~~~~~~~~^~~~~~~~~~
[466/534] Building CXX object src/arrow/dataset/CMakeFiles/arrow-dataset-scanner-test.dir/scanner_test.cc.o
In file included from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/kernel.h:32,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/function.h:27,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/api_aggregate.h:23,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec/options.h:26,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/dataset/scanner.h:29,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/dataset/scanner_test.cc:18:
In constructor ‘arrow::compute::ExecBatch::ExecBatch(arrow::compute::ExecBatch&&)’,
inlined from ‘arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/dataset/scanner_test.cc:2160:84,
inlined from ‘_OIter std::transform(_IIter, _IIter, _OIter, _UnaryOperation) [with _IIter = std::move_iterator<__gnu_cxx::__normal_iterator<std::optional<arrow::compute::ExecBatch>*, std::vector<std::optional<arrow::compute::ExecBatch>, std::allocator<std::optional<arrow::compute::ExecBatch> > > > >; _OIter = std::back_insert_iterator<std::vector<arrow::compute::ExecBatch> >; _UnaryOperation = arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>]’ at /usr/include/c++/11/bits/stl_algo.h:4296:12,
inlined from ‘std::vector<To> arrow::internal::MapVector(Fn&&, std::vector<_ValT>&&) [with Fn = arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>::<lambda(std::optional<arrow::compute::ExecBatch>)>; From = std::optional<arrow::compute::ExecBatch>; To = arrow::compute::ExecBatch]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/vector.h:102:17,
inlined from ‘arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/dataset/scanner_test.cc:2159:46,
inlined from ‘typename std::enable_if<(((! std::is_void<ContinueResult>::value) && (! arrow::detail::is_future<ContinueResult>::value)) && ((! NextFuture::is_empty) || std::is_same<ContinueResult, arrow::Status>::value))>::type arrow::detail::ContinueFuture::operator()(NextFuture, ContinueFunc&&, Args&& ...) const [with ContinueFunc = arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>; Args = {}; ContinueResult = arrow::Result<std::vector<arrow::compute::ExecBatch> >; NextFuture = arrow::Future<std::vector<arrow::compute::ExecBatch> >]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:150:22,
inlined from ‘void arrow::detail::ContinueFuture::IgnoringArgsIf(std::true_type, NextFuture&&, ContinueFunc&&, Args&& ...) const [with ContinueFunc = arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>; NextFuture = arrow::Future<std::vector<arrow::compute::ExecBatch> >; Args = {const arrow::internal::Empty&}]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:188:15,
inlined from ‘void arrow::Future<T>::ThenOnComplete<OnSuccess, OnFailure>::operator()(const arrow::Result<T>&) && [with OnSuccess = arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>; OnFailure = arrow::Future<>::PassthruOnFailure<arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()> >; T = arrow::internal::Empty]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:545:39,
inlined from ‘void arrow::Future<T>::WrapResultyOnComplete::Callback<OnComplete>::operator()(const arrow::FutureImpl&) && [with OnComplete = arrow::Future<>::ThenOnComplete<arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()> > >; T = arrow::internal::Empty]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/future.h:442:31,
inlined from ‘R arrow::internal::FnOnce<R(A ...)>::FnImpl<Fn>::invoke(A&& ...) [with Fn = arrow::Future<>::WrapResultyOnComplete::Callback<arrow::Future<>::ThenOnComplete<arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()> > > >; R = void; A = {const arrow::FutureImpl&}]’ at /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/util/functional.h:152:56:
/mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/compute/exec.h:179:21: warning: ‘*(arrow::compute::ExecBatch*)((char*)&<unnamed> + offsetof(std::optional<arrow::compute::ExecBatch>,std::optional<arrow::compute::ExecBatch>::<unnamed>.std::_Optional_base<arrow::compute::ExecBatch, false, false>::<unnamed>)).arrow::compute::ExecBatch::length’ may be used uninitialized [-Wmaybe-uninitialized]
179 | struct ARROW_EXPORT ExecBatch {
| ^~~~~~~~~
In file included from /usr/include/c++/11/functional:65,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/dataset/scanner.h:22,
from /mnt/user1/tscontract/github/rtpsw/arrow/cpp/src/arrow/dataset/scanner_test.cc:18:
/usr/include/c++/11/bits/stl_algo.h: In member function ‘R arrow::internal::FnOnce<R(A ...)>::FnImpl<Fn>::invoke(A&& ...) [with Fn = arrow::Future<>::WrapResultyOnComplete::Callback<arrow::Future<>::ThenOnComplete<arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()>, arrow::Future<>::PassthruOnFailure<arrow::dataset::{anonymous}::TestPlan::Run()::<lambda()> > > >; R = void; A = {const arrow::FutureImpl&}]’:
/usr/include/c++/11/bits/stl_algo.h:4296:31: note: ‘<anonymous>’ declared here
4296 | *__result = __unary_op(*__first);
| ~~~~~~~~~~^~~~~~~~~~
[534/534] Linking CXX executable release/parquet-schema-test {code}
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