adamreeve opened a new issue, #51278:
URL: https://github.com/apache/arrow/issues/51278
I get the following error building Arrow C++ with gcc 16.2.1 on x86_64
Fedora Linux 44, using the `ninja-debug-python` CMake preset:
```
/home/adam/dev/arrow/cpp/src/arrow/acero/test_util_internal.cc: In
constructor
‘arrow::acero::{anonymous}::DummyNode::DummyNode(arrow::acero::ExecPlan*,
arrow::acero::ExecNode::NodeVector, bool, arrow::acero::StartProducingFunc,
arrow::acero::StopProducingFunc)’:
/home/adam/dev/arrow/cpp/src/arrow/acero/test_util_internal.cc:79:57: error:
‘<unknown>’ may be used uninitialized [-Werror=maybe-uninitialized]
79 | : ExecNode(plan, std::move(inputs), {}, (is_sink) ? nullptr :
dummy_schema()),
|
~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
/home/adam/dev/arrow/cpp/src/arrow/acero/test_util_internal.cc:124:27: note:
by argument 1 of type ‘const arrow::acero::{anonymous}::DummyNode*’ to
‘std::shared_ptr<arrow::Schema>
arrow::acero::{anonymous}::DummyNode::dummy_schema() const’ declared here
124 | std::shared_ptr<Schema> dummy_schema() const {
| ^~~~~~~~~~~~
cc1plus: all warnings being treated as errors
```
`dummy_schema()` is a method of `DummyNode` but the `DummyNode` instance is
not yet initialized when this is called.
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