rtpsw opened a new issue, #36694:
URL: https://github.com/apache/arrow/issues/36694
### Describe the enhancement requested
When building a recent clone of Arrow, I observed this warning that should
be cleaned up:
```
[483/689] Building CXX object
src/arrow/engine/CMakeFiles/arrow-substrait-substrait-test.dir/substrait/serde_test.cc.o
In file included from /build/arrow/cpp/src/arrow/datum.h:29,
from /build/arrow/cpp/src/arrow/compute/expression.h:29,
from /build/arrow/cpp/src/arrow/compute/exec.h:33,
from /build/arrow/cpp/src/arrow/compute/kernel.h:32,
from /build/arrow/cpp/src/arrow/compute/function.h:27,
from /build/arrow/cpp/src/arrow/compute/api_aggregate.h:25,
from /build/arrow/cpp/src/arrow/acero/options.h:28,
from /build/arrow/cpp/src/arrow/acero/asof_join_node.h:20,
from
/build/arrow/cpp/src/arrow/engine/substrait/serde_test.cc:31:
In constructor
‘arrow::BaseBinaryScalar::BaseBinaryScalar(arrow::BaseBinaryScalar&&)’,
inlined from ‘arrow::BinaryScalar::BinaryScalar(arrow::BinaryScalar&&)’
at /build/arrow/cpp/src/arrow/scalar.h:273:21,
inlined from ‘void __gnu_cxx::new_allocator<_Tp>::construct(_Up*,
_Args&& ...) [with _Up = arrow::BinaryScalar; _Args = {arrow::BinaryScalar};
_Tp = arrow::BinaryScalar]’ at /usr/include/c++/11/ext/new_allocator.h:162:4,
inlined from ‘static void std::allocator_traits<std::allocator<_Tp1>
>::construct(std::allocator_traits<std::allocator<_Tp1> >::allocator_type&,
_Up*, _Args&& ...) [with _Up = arrow::BinaryScalar; _Args =
{arrow::BinaryScalar}; _Tp = arrow::BinaryScalar]’ at
/usr/include/c++/11/bits/alloc_traits.h:516:17,
inlined from ‘std::_Sp_counted_ptr_inplace<_Tp, _Alloc,
_Lp>::_Sp_counted_ptr_inplace(_Alloc, _Args&& ...) [with _Args =
{arrow::BinaryScalar}; _Tp = arrow::BinaryScalar; _Alloc =
std::allocator<arrow::BinaryScalar>; __gnu_cxx::_Lock_policy _Lp =
__gnu_cxx::_S_atomic]’ at /usr/include/c++/11/bits/shared_ptr_base.h:519:39,
inlined from ‘std::__shared_count<_Lp>::__shared_count(_Tp*&,
std::_Sp_alloc_shared_tag<_Alloc>, _Args&& ...) [with _Tp =
arrow::BinaryScalar; _Alloc = std::allocator<arrow::BinaryScalar>; _Args =
{arrow::BinaryScalar}; __gnu_cxx::_Lock_policy _Lp = __gnu_cxx::_S_atomic]’ at
/usr/include/c++/11/bits/shared_ptr_base.h:650:16,
inlined from ‘std::__shared_ptr<_Tp,
_Lp>::__shared_ptr(std::_Sp_alloc_shared_tag<_Tp>, _Args&& ...) [with _Alloc =
std::allocator<arrow::BinaryScalar>; _Args = {arrow::BinaryScalar}; _Tp =
arrow::BinaryScalar; __gnu_cxx::_Lock_policy _Lp = __gnu_cxx::_S_atomic]’ at
/usr/include/c++/11/bits/shared_ptr_base.h:1342:14,
inlined from
‘std::shared_ptr<_Tp>::shared_ptr(std::_Sp_alloc_shared_tag<_Tp>, _Args&& ...)
[with _Alloc = std::allocator<arrow::BinaryScalar>; _Args =
{arrow::BinaryScalar}; _Tp = arrow::BinaryScalar]’ at
/usr/include/c++/11/bits/shared_ptr.h:409:59,
inlined from ‘std::shared_ptr<_Tp> std::allocate_shared(const _Alloc&,
_Args&& ...) [with _Tp = arrow::BinaryScalar; _Alloc =
std::allocator<arrow::BinaryScalar>; _Args = {arrow::BinaryScalar}]’ at
/usr/include/c++/11/bits/shared_ptr.h:863:39,
inlined from ‘std::shared_ptr<_Tp> std::make_shared(_Args&& ...) [with
_Tp = arrow::BinaryScalar; _Args = {arrow::BinaryScalar}]’ at
/usr/include/c++/11/bits/shared_ptr.h:879:42,
inlined from ‘arrow::Datum::Datum(T&&) [with T = arrow::BinaryScalar; TV
= arrow::BinaryScalar; bool IsArray = false; bool IsScalar = true;
<template-parameter-1-5> = void]’ at /build/arrow/cpp/src/arrow/datum.h:128:59,
inlined from ‘virtual void
arrow::engine::Substrait_SupportedLiterals_Test::TestBody()’ at
/build/arrow/cpp/src/arrow/engine/substrait/serde_test.cc:491:11:
/build/arrow/cpp/src/arrow/scalar.h:248:21: warning:
‘<unnamed>.arrow::BinaryScalar::<unnamed>.arrow::BaseBinaryScalar::<anonymous>’
may be used uninitialized [-Wmaybe-uninitialized]
248 | struct ARROW_EXPORT BaseBinaryScalar
| ^~~~~~~~~~~~~~~~
/build/arrow/cpp/src/arrow/engine/substrait/serde_test.cc: In member
function ‘virtual void
arrow::engine::Substrait_SupportedLiterals_Test::TestBody()’:
/build/arrow/cpp/src/arrow/engine/substrait/serde_test.cc:491:75: note:
‘<anonymous>’ declared here
491 | ExpectEq(R"({"binary": "enp6"})",
BinaryScalar(Buffer::FromString("zzz")));
|
^
In file included from /build/arrow/cpp/src/arrow/datum.h:29,
from /build/arrow/cpp/src/arrow/compute/expression.h:29,
from /build/arrow/cpp/src/arrow/compute/exec.h:33,
from /build/arrow/cpp/src/arrow/compute/kernel.h:32,
from /build/arrow/cpp/src/arrow/compute/function.h:27,
from /build/arrow/cpp/src/arrow/compute/api_aggregate.h:25,
from /build/arrow/cpp/src/arrow/acero/options.h:28,
from /build/arrow/cpp/src/arrow/acero/asof_join_node.h:20,
from
/build/arrow/cpp/src/arrow/engine/substrait/serde_test.cc:31:
In constructor
‘arrow::BaseBinaryScalar::BaseBinaryScalar(arrow::BaseBinaryScalar&&)’,
inlined from ‘arrow::BinaryScalar::BinaryScalar(arrow::BinaryScalar&&)’
at /build/arrow/cpp/src/arrow/scalar.h:273:21,
inlined from ‘void __gnu_cxx::new_allocator<_Tp>::construct(_Up*,
_Args&& ...) [with _Up = arrow::BinaryScalar; _Args = {arrow::BinaryScalar};
_Tp = arrow::BinaryScalar]’ at /usr/include/c++/11/ext/new_allocator.h:162:4,
inlined from ‘static void std::allocator_traits<std::allocator<_Tp1>
>::construct(std::allocator_traits<std::allocator<_Tp1> >::allocator_type&,
_Up*, _Args&& ...) [with _Up = arrow::BinaryScalar; _Args =
{arrow::BinaryScalar}; _Tp = arrow::BinaryScalar]’ at
/usr/include/c++/11/bits/alloc_traits.h:516:17,
inlined from ‘std::_Sp_counted_ptr_inplace<_Tp, _Alloc,
_Lp>::_Sp_counted_ptr_inplace(_Alloc, _Args&& ...) [with _Args =
{arrow::BinaryScalar}; _Tp = arrow::BinaryScalar; _Alloc =
std::allocator<arrow::BinaryScalar>; __gnu_cxx::_Lock_policy _Lp =
__gnu_cxx::_S_atomic]’ at /usr/include/c++/11/bits/shared_ptr_base.h:519:39,
inlined from ‘std::__shared_count<_Lp>::__shared_count(_Tp*&,
std::_Sp_alloc_shared_tag<_Alloc>, _Args&& ...) [with _Tp =
arrow::BinaryScalar; _Alloc = std::allocator<arrow::BinaryScalar>; _Args =
{arrow::BinaryScalar}; __gnu_cxx::_Lock_policy _Lp = __gnu_cxx::_S_atomic]’ at
/usr/include/c++/11/bits/shared_ptr_base.h:650:16,
inlined from ‘std::__shared_ptr<_Tp,
_Lp>::__shared_ptr(std::_Sp_alloc_shared_tag<_Tp>, _Args&& ...) [with _Alloc =
std::allocator<arrow::BinaryScalar>; _Args = {arrow::BinaryScalar}; _Tp =
arrow::BinaryScalar; __gnu_cxx::_Lock_policy _Lp = __gnu_cxx::_S_atomic]’ at
/usr/include/c++/11/bits/shared_ptr_base.h:1342:14,
inlined from
‘std::shared_ptr<_Tp>::shared_ptr(std::_Sp_alloc_shared_tag<_Tp>, _Args&& ...)
[with _Alloc = std::allocator<arrow::BinaryScalar>; _Args =
{arrow::BinaryScalar}; _Tp = arrow::BinaryScalar]’ at
/usr/include/c++/11/bits/shared_ptr.h:409:59,
inlined from ‘std::shared_ptr<_Tp> std::allocate_shared(const _Alloc&,
_Args&& ...) [with _Tp = arrow::BinaryScalar; _Alloc =
std::allocator<arrow::BinaryScalar>; _Args = {arrow::BinaryScalar}]’ at
/usr/include/c++/11/bits/shared_ptr.h:863:39,
inlined from ‘std::shared_ptr<_Tp> std::make_shared(_Args&& ...) [with
_Tp = arrow::BinaryScalar; _Args = {arrow::BinaryScalar}]’ at
/usr/include/c++/11/bits/shared_ptr.h:879:42,
inlined from ‘arrow::Datum::Datum(T&&) [with T = arrow::BinaryScalar; TV
= arrow::BinaryScalar; bool IsArray = false; bool IsScalar = true;
<template-parameter-1-5> = void]’ at /build/arrow/cpp/src/arrow/datum.h:128:59,
inlined from ‘virtual void
arrow::engine::Substrait_SupportedLiterals_Test::TestBody()’ at
/build/arrow/cpp/src/arrow/engine/substrait/serde_test.cc:491:11:
/build/arrow/cpp/src/arrow/scalar.h:248:21: warning:
‘<unnamed>.arrow::BinaryScalar::<unnamed>.arrow::BaseBinaryScalar::<anonymous>’
may be used uninitialized [-Wmaybe-uninitialized]
248 | struct ARROW_EXPORT BaseBinaryScalar
| ^~~~~~~~~~~~~~~~
/build/arrow/cpp/src/arrow/engine/substrait/serde_test.cc: In member
function ‘virtual void
arrow::engine::Substrait_SupportedLiterals_Test::TestBody()’:
/build/arrow/cpp/src/arrow/engine/substrait/serde_test.cc:491:75: note:
‘<anonymous>’ declared here
491 | ExpectEq(R"({"binary": "enp6"})",
BinaryScalar(Buffer::FromString("zzz")));
|
^
```
### Component(s)
C++
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