Antoine Pitrou created ARROW-3110:
-------------------------------------
Summary: [C++] Compilation warnings with gcc 7.3.0
Key: ARROW-3110
URL: https://issues.apache.org/jira/browse/ARROW-3110
Project: Apache Arrow
Issue Type: Task
Components: C++
Affects Versions: 0.10.0
Reporter: Antoine Pitrou
Assignee: Antoine Pitrou
This is happening when building in release mode:
{code}
../src/arrow/python/python_to_arrow.cc: In function 'arrow::Status
arrow::py::detail::BuilderAppend(arrow::BinaryBuilder*, PyObject*, bool*)':
../src/arrow/python/python_to_arrow.cc:388:56: warning: 'length' may be used
uninitialized in this function [-Wmaybe-uninitialized]
if (ARROW_PREDICT_FALSE(builder->value_data_length() + length >
kBinaryMemoryLimit)) {
^
../src/arrow/python/python_to_arrow.cc:385:11: note: 'length' was declared here
int32_t length;
^~~~~~
In file included from ../src/arrow/python/serialize.cc:32:0:
../src/arrow/builder.h: In member function 'arrow::Status
arrow::py::SequenceBuilder::Update(int64_t, int8_t*)':
../src/arrow/builder.h:413:5: warning: 'offset32' may be used uninitialized in
this function [-Wmaybe-uninitialized]
raw_data_[length_++] = val;
^~~~~~~~~
../src/arrow/python/serialize.cc:90:13: note: 'offset32' was declared here
int32_t offset32;
^~~~~~~~
{code}
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