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Rok Mihevc commented on ARROW-4346: ----------------------------------- This issue has been migrated to [issue #20913|https://github.com/apache/arrow/issues/20913] on GitHub. Please see the [migration documentation|https://github.com/apache/arrow/issues/14542] for further details. > [C++] Fix compiler warnings with gcc 8.2.0 > ------------------------------------------ > > Key: ARROW-4346 > URL: https://issues.apache.org/jira/browse/ARROW-4346 > Project: Apache Arrow > Issue Type: Improvement > Components: C++ > Reporter: Wes McKinney > Assignee: Wes McKinney > Priority: Major > Labels: pull-request-available > Fix For: 0.13.0 > > Time Spent: 20m > Remaining Estimate: 0h > > I just set up a new machine on Ubuntu 18.10 so I'm getting a few papercuts > {code} > /usr/bin/ccache /usr/bin/c++ -DARROW_EXTRA_ERROR_CONTEXT -DARROW_JEMALLOC > -DARROW_JEMALLOC_INCLUDE_DIR=/home/wesm/code/arrow/cpp/build/jemalloc_ep-prefix/src/jemalloc_ep/dist//include > -DARROW_NO_DEPRECATED_API -DARROW_USE_GLOG -DARROW_USE_SIMD > -DARROW_WITH_ZSTD -Isrc -I../src -isystem /home/wesm/cpp-toolchain/include > -isystem gbenchmark_ep/src/gbenchmark_ep-install/include -isystem > jemalloc_ep-prefix/src -isystem ../thirdparty/hadoop/include -isystem > orc_ep-install/include -isystem /home/wesm/cpp-toolchain/include/thrift > -Wno-noexcept-type -fuse-ld=gold -ggdb -O0 -Wall -Wconversion > -Wno-sign-conversion -Werror -msse4.2 -g -fPIE -std=gnu++11 -MD -MT > src/parquet/CMakeFiles/parquet-encoding-benchmark.dir/encoding-benchmark.cc.o > -MF > src/parquet/CMakeFiles/parquet-encoding-benchmark.dir/encoding-benchmark.cc.o.d > -o > src/parquet/CMakeFiles/parquet-encoding-benchmark.dir/encoding-benchmark.cc.o > -c ../src/parquet/encoding-benchmark.cc > In file included from ../src/parquet/encoding-internal.h:33, > from ../src/parquet/encoding-benchmark.cc:20: > ../src/parquet/encoding.h: In instantiation of ‘int > parquet::Decoder<DType>::DecodeSpaced(parquet::Decoder<DType>::T*, int, int, > const uint8_t*, int64_t) [with DType = > parquet::DataType<(parquet::Type::type)6>; parquet::Decoder<DType>::T = > parquet::ByteArray; uint8_t = unsigned char; int64_t = long int]’: > ../src/parquet/encoding.h:110:15: required from here > ../src/parquet/encoding.h:120:11: error: ‘void* memset(void*, int, size_t)’ > clearing an object of non-trivial type > ‘parquet::Decoder<parquet::DataType<(parquet::Type::type)6> >::T’ {aka > ‘struct parquet::ByteArray’}; use assignment or value-initialization instead > [-Werror=class-memaccess] > memset(buffer + values_read, 0, (num_values - values_read) * sizeof(T)); > ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In file included from ../src/parquet/schema.h:31, > from ../src/parquet/encoding.h:29, > from ../src/parquet/encoding-internal.h:33, > from ../src/parquet/encoding-benchmark.cc:20: > ../src/parquet/types.h:155:8: note: > ‘parquet::Decoder<parquet::DataType<(parquet::Type::type)6> >::T’ {aka > ‘struct parquet::ByteArray’} declared here > struct ByteArray { > ^~~~~~~~~ > cc1plus: all warnings being treated as errors > {code} -- This message was sent by Atlassian Jira (v8.20.10#820010)