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Posted to issues@arrow.apache.org by "Antoine Pitrou (JIRA)" <ji...@apache.org> on 2018/01/30 14:41:00 UTC
[jira] [Created] (ARROW-2054) Compilation warnings
Antoine Pitrou created ARROW-2054:
-------------------------------------
Summary: Compilation warnings
Key: ARROW-2054
URL: https://issues.apache.org/jira/browse/ARROW-2054
Project: Apache Arrow
Issue Type: Task
Components: C++
Affects Versions: 0.8.0
Reporter: Antoine Pitrou
I suppose this may vary depending on the compiler, but I get the following warnings with gcc 4.9:
{code}
/home/antoine/arrow/cpp/src/plasma/fling.cc: In function ‘int send_fd(int, int)’:
/home/antoine/arrow/cpp/src/plasma/fling.cc:46:50: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
*reinterpret_cast<int*>(CMSG_DATA(header)) = fd;
^
/home/antoine/arrow/cpp/src/arrow/python/io.cc: In member function ‘virtual arrow::Status arrow::py::PyReadableFile::Read(int64_t, std::shared_ptr<arrow::Buffer>*)’:
/home/antoine/arrow/cpp/src/arrow/python/io.cc:153:60: warning: ‘bytes_obj’ may be used uninitialized in this function [-Wmaybe-uninitialized]
Py_DECREF(bytes_obj);
^
/home/antoine/arrow/cpp/src/arrow/python/io.cc: In member function ‘virtual arrow::Status arrow::py::PyReadableFile::Read(int64_t, int64_t*, void*)’:
/home/antoine/arrow/cpp/src/arrow/python/io.cc:141:60: warning: ‘bytes_obj’ may be used uninitialized in this function [-Wmaybe-uninitialized]
Py_DECREF(bytes_obj);
^
/home/antoine/arrow/cpp/src/arrow/python/io.cc: In member function ‘virtual arrow::Status arrow::py::PyReadableFile::GetSize(int64_t*)’:
/home/antoine/arrow/cpp/src/arrow/python/io.cc:187:20: warning: ‘file_size’ may be used uninitialized in this function [-Wmaybe-uninitialized]
*size = file_size;
^
/home/antoine/arrow/cpp/src/arrow/python/io.cc:46:65: warning: ‘current_position’ may be used uninitialized in this function [-Wmaybe-uninitialized]
const_cast<char*>(argspec), args...);
^
/home/antoine/arrow/cpp/src/arrow/python/io.cc:175:11: note: ‘current_position’ was declared here
int64_t current_position;
^
/home/antoine/arrow/cpp/src/arrow/ipc/json-internal.cc: In function ‘arrow::Status arrow::ipc::internal::json::GetField(const Value&, const arrow::ipc::DictionaryMemo*, std::shared_ptr<arrow::Field>*)’:
/home/antoine/arrow/cpp/src/arrow/ipc/json-internal.cc:876:81: warning: ‘dictionary_id’ may be used uninitialized in this function [-Wmaybe-uninitialized]
RETURN_NOT_OK(dictionary_memo->GetDictionary(dictionary_id, &dictionary));
^
/home/antoine/arrow/cpp/src/arrow/ipc/json-internal.cc: In function ‘arrow::Status arrow::ipc::internal::json::ReadSchema(const Value&, arrow::MemoryPool*, std::shared_ptr<arrow::Schema>*)’:
/home/antoine/arrow/cpp/src/arrow/ipc/json-internal.cc:1354:80: warning: ‘dictionary_id’ may be used uninitialized in this function [-Wmaybe-uninitialized]
RETURN_NOT_OK(dictionary_memo->AddDictionary(dictionary_id, dictionary));
^
/home/antoine/arrow/cpp/src/arrow/ipc/json-internal.cc:1349:13: note: ‘dictionary_id’ was declared here
int64_t dictionary_id;
^
In file included from /home/antoine/arrow/cpp/src/arrow/api.h:25:0,
from /home/antoine/arrow/cpp/src/arrow/python/builtin_convert.cc:29:
/home/antoine/arrow/cpp/src/arrow/builder.h: In member function ‘arrow::Status arrow::py::TimestampConverter::AppendItem(const arrow::py::OwnedRef&)’:
/home/antoine/arrow/cpp/src/arrow/builder.h:284:5: warning: ‘t’ may be used uninitialized in this function [-Wmaybe-uninitialized]
raw_data_[length_++] = val;
^
/home/antoine/arrow/cpp/src/arrow/python/builtin_convert.cc:576:13: note: ‘t’ was declared here
int64_t t;
^
{code}
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