[ARROW-12240] [Python] invalid-offsetof warning from apple clang-12

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28054
• Assignee: yibocai#1
• Reporter: yibocai#1
• Created: 07/Apr/21 06:04
• Updated: 11/Jan/23 08:25
• Resolved: 03/May/21 14:23

Description

Similar issue as https://issues.apache.org/jira/browse/ARROW-11299.

Found when building pyarrow on Macos M1. I don't think it's platform related.
No warning for clang-9, but apple clang-12 complains about it.

Error log:

[ 13%] Building CXX object CMakeFiles/_csv.dir/_csv.cpp.o
/Users/cyb/work/arrow/python/build/temp.macosx-11.0-arm64-3.9/_csv.cpp:19051:133: warning: offset of on non-standard-layout type 'struct __pyx_obj_7pyarrow_4_csv_ConvertOptions' [-Winvalid-offsetof]
  if (__pyx_type_7pyarrow_4_csv_ConvertOptions.tp_weaklistoffset == 0) __pyx_type_7pyarrow_4_csv_ConvertOptions.tp_weaklistoffset = offsetof(struct __pyx_obj_7pyarrow_4_csv_ConvertOptions, __pyx_base.__weakref__);
^                                                        ~~~~~~~~~~
/Library/Developer/CommandLineTools/usr/lib/clang/12.0.0/include/stddef.h:104:24: note: expanded from macro 'offsetof'
#define offsetof(t, d) __builtin_offsetof(t, d)

Issue Links

• links to: GitHub Pull Request #10154