[ARROW-7314] [Python] Compiler warning in pyarrow

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.16.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/23599
• Assignee: Joris Van den Bossche
• Reporter: Neal Richardson
• Created: 04/Dec/19 18:25
• Updated: 11/Jan/23 07:52
• Resolved: 05/Dec/19 17:13

Description

Saw this while building a wheel locally

-- Running cmake --build for pyarrow
cmake --build . --config release -- -j3
[23/24] Building CXX object CMakeFiles/lib.dir/lib.cpp.o
lib.cpp: In function ‘PyObject* __pyx_pf_7pyarrow_3lib_90union(PyObject*, PyObject*, PyObject*, PyObject*)’:
lib.cpp:37184:29: warning: comparison of integer expressions of different signedness: ‘Py_ssize_t’ {aka ‘long int’} and ‘std::vector<std::shared_ptr<arrow::Field> >::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
     __pyx_t_2 = ((__pyx_t_6 != __pyx_v_c_fields.size()) != 0);
                   ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Issue Links

• links to: GitHub Pull Request #5974