paleolimbot opened a new issue, #39138: URL: https://github.com/apache/arrow/issues/39138
### Describe the bug, including details regarding any error messages, version, and platform. As identified by the CRAN M1 check: https://www.stats.ox.ac.uk/pub/bdr/M1mac/arrow.log A few are in cpp11 headers: ``` In file included from /Users/ripley/R/Library/cpp11/include/cpp11/as.hpp:11: /Users/ripley/R/Library/cpp11/include/cpp11/protect.hpp:130:29: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32] return std::forward<F>(f)(std::get<I>(std::move(a))...); ~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~ /Users/ripley/R/Library/cpp11/include/cpp11/protect.hpp:136:10: note: in instantiation of function template specialization 'cpp11::detail::apply<SEXPREC *(*&)(const char *, int, cetype_t), const char *&&, unsigned long &&, cetype_t &&, 0UL, 1UL, 2UL>' requested here return apply(std::forward<F>(f), std::move(a), make_index_sequence<sizeof...(Aref)>{}); ^ /Users/ripley/R/Library/cpp11/include/cpp11/protect.hpp:149:12: note: in instantiation of function template specialization 'cpp11::detail::apply<SEXPREC *(*&)(const char *, int, cetype_t), const char *&&, unsigned long &&, cetype_t &&>' requested here return apply(ptr_, std::move(arefs_)); ^ /Users/ripley/R/Library/cpp11/include/cpp11/protect.hpp:56:16: note: in instantiation of member function 'cpp11::detail::closure<SEXPREC *(const char *, int, cetype_t), const char *&&, unsigned long &&, cetype_t &&>::operator()' requested here return static_cast<Fun&&>(*callback)(); ^ /Users/ripley/R/Library/cpp11/include/cpp11/protect.hpp:163:14: note: in instantiation of function template specialization 'cpp11::unwind_protect<cpp11::detail::closure<SEXPREC *(const char *, int, cetype_t), const char *&&, unsigned long &&, cetype_t &&>, void>' requested here return unwind_protect( ^ /Users/ripley/R/Library/cpp11/include/cpp11/r_string.hpp:20:35: note: in instantiation of function template specialization 'cpp11::protect::function<SEXPREC *(const char *, int, cetype_t)>::operator()<const char *, unsigned long, cetype_t>' requested here : data_(safe[Rf_mkCharLenCE](data.c_str(), data.size(), CE_UTF8)) {} ^ In file included from table.cpp:18: ././arrow_types.h:206:16: warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 'long') to 'int' [-Wshorten-64-to-32] lambda(j, x_i[k], names_x_i[k]); ~~~~~~ ^ ././arrow_types.h:218:3: note: in instantiation of function template specialization 'arrow::r::TraverseDots<(lambda at ././arrow_types.h:217:14)>' requested here TraverseDots(dots, num_fields, set); ^ ././arrow_types.h:209:14: warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 'long') to 'int' [-Wshorten-64-to-32] lambda(j, dots[i], name_i); ~~~~~~ ^ ././arrow_types.h:206:16: warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 'long') to 'int' [-Wshorten-64-to-32] lambda(j, x_i[k], names_x_i[k]); ~~~~~~ ^ table.cpp:182:13: note: in instantiation of function template specialization 'arrow::r::TraverseDots<(lambda at table.cpp:170:28)>' requested here arrow::r::TraverseDots(lst, num_fields, extract_one_field); ^ In file included from table.cpp:18: ././arrow_types.h:209:14: warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 'long') to 'int' [-Wshorten-64-to-32] lambda(j, dots[i], name_i); ~~~~~~ ^ ././arrow_types.h:206:16: warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 'long') to 'int' [-Wshorten-64-to-32] lambda(j, x_i[k], names_x_i[k]); ~~~~~~ ^ table.cpp:213:13: note: in instantiation of function template specialization 'arrow::r::TraverseDots<(lambda at table.cpp:203:31)>' requested here arrow::r::TraverseDots(lst, num_fields, extract_one_metadata); ^ In file included from table.cpp:18: ././arrow_types.h:209:14: warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 'long') to 'int' [-Wshorten-64-to-32] lambda(j, dots[i], name_i); ~~~~~~ ^ 22 warnings generated. In file included from /Users/ripley/R/Library/cpp11/include/cpp11.hpp:5: /Users/ripley/R/Library/cpp11/include/cpp11/as.hpp:104:16: warning: implicit conversion turns floating-point number into integer: 'double' to 'enable_if_integral<long long, long long>' (aka 'long long') [-Wfloat-conversion] return value; ~~~~~~ ^~~~~ io.cpp:238:25: note: in instantiation of function template specialization 'cpp11::as_cpp<long long>' requested here return cpp11::as_cpp<int64_t>(result); ^ 15 warnings generated. In file included from json.cpp:18: In file included from ././arrow_types.h:22: In file included from ././arrow_cpp11.h:25: In file included from /Users/ripley/R/Library/cpp11/include/cpp11.hpp:7: In file included from /Users/ripley/R/Library/cpp11/include/cpp11/data_frame.hpp:12: In file included from /Users/ripley/R/Library/cpp11/include/cpp11/list.hpp:7: In file included from /Users/ripley/R/Library/cpp11/include/cpp11/named_arg.hpp:9: /Users/ripley/R/Library/cpp11/include/cpp11/sexp.hpp:79:36: warning: implicit conversion turns floating-point number into integer: 'double' to 'size_t' (aka 'unsigned long') [-Wfloat-conversion] operator size_t() const { return REAL_ELT(data_, 0); } ~~~~~~ ^~~~~~~~~~~~~~~~~~ In file included from json.cpp:18: In file included from ././arrow_types.h:22: In file included from ././arrow_cpp11.h:25: In file included from /Users/ripley/R/Library/cpp11/include/cpp11.hpp:7: /Users/ripley/R/Library/cpp11/include/cpp11/data_frame.hpp:48:14: warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 'long') to 'int' [-Wshorten-64-to-32] return Rf_xlength(nms); ~~~~~~ ^~~~~~~~~~~~~~~ /Users/ripley/R/Library/cpp11/include/cpp11/data_frame.hpp:55:12: warning: implicit conversion loses integer precision: 'R_xlen_t' (aka 'long') to 'int' [-Wshorten-64-to-32] return Rf_xlength(VECTOR_ELT(x, 0)); ~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ ``` A few are in Arrow C++ headers: ``` In file included from RTasks.cpp:18: In file included from ././r_task_group.h:20: In file included from /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/parallel.h:25: In file included from /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/thread_pool.h:32: In file included from /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/future.h:32: In file included from /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/type_traits.h:26: /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/bit_util.h:338:84: warning: implicit conversion loses integer precision: 'int' to 'unsigned char' [-Wimplicit-int-conversion] return (static_cast<Word>(i < sizeof(Word) * 8) << (i & (sizeof(Word) * 8 - 1))) - 1; ~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/bit_util.h:340:15: note: in instantiation of function template specialization 'arrow::bit_util::PrecedingWordBitmask<unsigned char>' requested here static_assert(PrecedingWordBitmask<uint8_t>(0) == 0x00, ""); ^ /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/bit_util.h:338:84: warning: implicit conversion loses integer precision: 'int' to 'unsigned short' [-Wimplicit-int-conversion] return (static_cast<Word>(i < sizeof(Word) * 8) << (i & (sizeof(Word) * 8 - 1))) - 1; ~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/bit_util.h:343:15: note: in instantiation of function template specialization 'arrow::bit_util::PrecedingWordBitmask<unsigned short>' requested here static_assert(PrecedingWordBitmask<uint16_t>(8) == 0x00ff, ""); ^ /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/bit_util.h:361:64: warning: implicit conversion loses integer precision: 'uint32_t' (aka 'unsigned int') to 'uint8_t' (aka 'unsigned char') [-Wimplicit-int-conversion] values[4] << 4 | values[5] << 5 | values[6] << 6 | values[7] << 7); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~ 3 warnings generated. In file included from io.cpp:23: In file included from /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/buffer_builder.h:30: /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/util/bitmap_generate.h:95:35: warning: implicit conversion loses integer precision: 'int' to 'uint8_t' (aka 'unsigned char') [-Wimplicit-int-conversion] out_results[6] << 6 | out_results[7] << 7); ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/buffer_builder.h:369:15: note: in instantiation of function template specialization 'arrow::internal::GenerateBitsUnrolled<(lambda at /Users/ripley/R/packages/tests-devel/arrow/libarrow/arrow-14.0.0/include/arrow/buffer_builder.h:369:79)>' requested here internal::GenerateBitsUnrolled(mutable_data(), bit_length_, num_elements, [&] { ``` ### Component(s) R -- This is an automated message from the Apache Git Service. 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