******************************************************************************** conan install xlsxio/0.2.34@#3aa3d17c87363662b78fb5759f56c32b --build=xlsxio -pr /home/conan/w/prod/BuildSingleReference/241942/ed62d4ca-5b75-4c49-821b-207aca21ad49/profile_linux_12_libstdcpp_clang_release_64.xlsxio-shared-True.txt -c tools.system.package_manager:mode=install -c tools.system.package_manager:sudo=True ******************************************************************************** Auto detecting your dev setup to initialize the default profile (/home/conan/w/prod/BuildSingleReference/.conan/profiles/default) CC and CXX: clang, clang++ Found clang 12.0 clang>=8, using the major as version Default settings os=Linux os_build=Linux arch=x86_64 arch_build=x86_64 compiler=clang compiler.version=12 compiler.libcxx=libstdc++ build_type=Release *** You can change them in /home/conan/w/prod/BuildSingleReference/.conan/profiles/default *** *** Or override with -s compiler='other' -s ...s*** Configuration: [settings] arch=x86_64 build_type=Release compiler=clang compiler.libcxx=libstdc++ compiler.version=12 os=Linux [options] xlsxio:shared=True [build_requires] [env] [conf] tools.system.package_manager:mode=install tools.system.package_manager:sudo=True minizip/1.2.12: Not found in local cache, looking in remotes... minizip/1.2.12: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz minizip/1.2.12: Downloaded recipe revision 216ceb07590dfeda7a04dc52d3d95f36 zlib/1.2.13: Not found in local cache, looking in remotes... zlib/1.2.13: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz zlib/1.2.13: Downloaded recipe revision e377bee636333ae348d51ca90874e353 bzip2/1.0.8: Not found in local cache, looking in remotes... bzip2/1.0.8: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz bzip2/1.0.8: Downloaded recipe revision 411fc05e80d47a89045edc1ee6f23c1d expat/2.4.9: Not found in local cache, looking in remotes... expat/2.4.9: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz expat/2.4.9: Downloaded recipe revision f03222d9b43e407fe5b217c0fac3aaab xlsxio/0.2.34: Forced build from source Installing package: xlsxio/0.2.34 Requirements bzip2/1.0.8 from 'conan-center' - Downloaded expat/2.4.9 from 'conan-center' - Downloaded minizip/1.2.12 from 'conan-center' - Downloaded xlsxio/0.2.34 from local cache - Cache zlib/1.2.13 from 'conan-center' - Downloaded Packages bzip2/1.0.8:00c750ce60d90d17c6eb9a941db66d67f523d38f - Download expat/2.4.9:c0f084393d9413a84a01f8cbf9e6f763ddec5b25 - Download minizip/1.2.12:82a08da59a8c63f638315d8d28eb8cd41a845fd0 - Download xlsxio/0.2.34:c84761dcffd728c405d4e52ef812a5b5b9130ab9 - Build zlib/1.2.13:cf142e38e022cf2a99aadebfd8f37ead3e935ad7 - Download Installing (downloading, building) binaries... bzip2/1.0.8: Retrieving package 00c750ce60d90d17c6eb9a941db66d67f523d38f from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz bzip2/1.0.8: Package installed 00c750ce60d90d17c6eb9a941db66d67f523d38f bzip2/1.0.8: Downloaded package revision cad370f9ddc12224fbd39c59d394c4ff expat/2.4.9: Retrieving package c0f084393d9413a84a01f8cbf9e6f763ddec5b25 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz expat/2.4.9: Package installed c0f084393d9413a84a01f8cbf9e6f763ddec5b25 expat/2.4.9: Downloaded package revision a969ee6ec98925b5f7b0bbf65aa3f725 zlib/1.2.13: Retrieving package cf142e38e022cf2a99aadebfd8f37ead3e935ad7 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz zlib/1.2.13: Package installed cf142e38e022cf2a99aadebfd8f37ead3e935ad7 zlib/1.2.13: Downloaded package revision b0af5946b9a39e4b60e0c03190297d08 minizip/1.2.12: Retrieving package 82a08da59a8c63f638315d8d28eb8cd41a845fd0 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz minizip/1.2.12: Package installed 82a08da59a8c63f638315d8d28eb8cd41a845fd0 minizip/1.2.12: Downloaded package revision 4a4c544a859fd06c3f9722757e741574 [HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK xlsxio/0.2.34: Configuring sources in /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/source/src xlsxio/0.2.34: [HOOK - conan-center.py] post_source(): [LIBCXX MANAGEMENT (KB-H011)] OK [HOOK - conan-center.py] post_source(): [CPPSTD MANAGEMENT (KB-H022)] OK [HOOK - conan-center.py] post_source(): [SHORT_PATHS USAGE (KB-H066)] OK xlsxio/0.2.34: Copying sources to build folder xlsxio/0.2.34: Building your package in /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9 xlsxio/0.2.34: Generator txt created conanbuildinfo.txt xlsxio/0.2.34: Calling generate() xlsxio/0.2.34: Preset 'release' added to CMakePresets.json. Invoke it manually using 'cmake --preset release' xlsxio/0.2.34: If your CMake version is not compatible with CMakePresets (<3.19) call cmake like: 'cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release/generators/conan_toolchain.cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release' xlsxio/0.2.34: Aggregating env generators [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK xlsxio/0.2.34: Calling build() xlsxio/0.2.34: Apply patch (conan): conan build cmake support xlsxio/0.2.34: CMake command: cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release/generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/src" ----Running------ > . "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release/generators/conanbuild.sh" && cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release/generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/src" ----------------- -- Using Conan toolchain: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release/generators/conan_toolchain.cmake -- Conan toolchain: Setting BUILD_SHARED_LIBS = ON -- The C compiler identification is Clang 12.0.0 -- The CXX compiler identification is Clang 12.0.0 -- Check for working C compiler: /usr/local/bin/clang -- Check for working C compiler: /usr/local/bin/clang -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/local/bin/clang++ -- Check for working CXX compiler: /usr/local/bin/clang++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- XLSX I/O library version: 0.2.34 -- Conan: Target declared 'minizip::minizip' -- Conan: Target declared 'ZLIB::ZLIB' -- Conan: Target declared 'BZip2::BZip2' -- Conan: Including build module from '/home/conan/w/prod/BuildSingleReference/.conan/data/bzip2/1.0.8/_/_/package/00c750ce60d90d17c6eb9a941db66d67f523d38f/lib/cmake/conan-official-bzip2-variables.cmake' -- Conan: Target declared 'expat::expat' -- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE) -- Configuring done -- Generating done -- Build files have been written to: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release xlsxio/0.2.34: CMake command: cmake --build "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release" '--' '-j3' ----Running------ > . "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release/generators/conanbuild.sh" && cmake --build "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release" '--' '-j3' ----------------- Scanning dependencies of target xlsxio_write_SHARED Scanning dependencies of target xlsxio_read_SHARED [ 5%] Building C object CMakeFiles/xlsxio_write_SHARED.dir/lib/xlsxio_write.c.o [ 17%] Building C object CMakeFiles/xlsxio_read_SHARED.dir/lib/xlsxio_read_sharedstrings.c.o [ 17%] Building C object CMakeFiles/xlsxio_read_SHARED.dir/lib/xlsxio_read.c.o [ 23%] Linking C shared library libxlsxio_write.so [ 23%] Built target xlsxio_write_SHARED Scanning dependencies of target example_xlsxio_write Scanning dependencies of target example_xlsxio_write_getversion [ 29%] Building C object CMakeFiles/example_xlsxio_write.dir/examples/example_xlsxio_write.c.o [ 35%] Building C object CMakeFiles/example_xlsxio_write_getversion.dir/examples/example_xlsxio_write_getversion.c.o [ 41%] Linking C executable example_xlsxio_write_getversion [ 47%] Linking C executable example_xlsxio_write [ 52%] Linking C shared library libxlsxio_read.so [ 52%] Built target example_xlsxio_write [ 52%] Built target example_xlsxio_write_getversion Scanning dependencies of target xlsxio_csv2xlsx [ 58%] Building C object CMakeFiles/xlsxio_csv2xlsx.dir/src/xlsxio_csv2xlsx.c.o [ 58%] Built target xlsxio_read_SHARED Scanning dependencies of target example_xlsxio_read Scanning dependencies of target example_xlsxio_read_advanced [ 64%] Building C object CMakeFiles/example_xlsxio_read_advanced.dir/examples/example_xlsxio_read_advanced.c.o [ 70%] Building C object CMakeFiles/example_xlsxio_read.dir/examples/example_xlsxio_read.c.o [ 76%] Linking C executable example_xlsxio_read_advanced [ 82%] Linking C executable example_xlsxio_read [ 88%] Linking C executable xlsxio_csv2xlsx [ 88%] Built target example_xlsxio_read_advanced Scanning dependencies of target xlsxio_xlsx2csv [ 94%] Building C object CMakeFiles/xlsxio_xlsx2csv.dir/src/xlsxio_xlsx2csv.c.o [ 94%] Built target example_xlsxio_read [ 94%] Built target xlsxio_csv2xlsx [100%] Linking C executable xlsxio_xlsx2csv [100%] Built target xlsxio_xlsx2csv xlsxio/0.2.34: Package 'c84761dcffd728c405d4e52ef812a5b5b9130ab9' built xlsxio/0.2.34: Build folder /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release xlsxio/0.2.34: Generated conaninfo.txt xlsxio/0.2.34: Generated conanbuildinfo.txt xlsxio/0.2.34: Generating the package xlsxio/0.2.34: Package folder /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9 xlsxio/0.2.34: Calling package() xlsxio/0.2.34: Copied 1 '.txt' file: LICENSE.txt xlsxio/0.2.34: CMake command: cmake --install "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release" --prefix "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9" ----Running------ > . "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release/generators/conanbuild.sh" && cmake --install "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/build/c84761dcffd728c405d4e52ef812a5b5b9130ab9/build/Release" --prefix "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9" ----------------- -- Install configuration: "Release" -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/lib/libxlsxio_read.so -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/lib/libxlsxio_write.so -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/cmake/xlsxioTargets.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/cmake/xlsxioTargets-release.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/cmake/xlsxio-config.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/xlsxio_xlsx2csv -- Set runtime path of "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/xlsxio_xlsx2csv" to "" -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/xlsxio_csv2xlsx -- Set runtime path of "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/xlsxio_csv2xlsx" to "" -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/example_xlsxio_write_getversion -- Set runtime path of "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/example_xlsxio_write_getversion" to "" -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/example_xlsxio_write -- Set runtime path of "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/example_xlsxio_write" to "" -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/example_xlsxio_read -- Set runtime path of "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/example_xlsxio_read" to "" -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/example_xlsxio_read_advanced -- Set runtime path of "/home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/bin/example_xlsxio_read_advanced" to "" -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/include -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/include/xlsxio_write.h -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/include/xlsxio_version.h -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/include/xlsxio_read.h -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/cmake/libxlsxio_writeConfig.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/cmake/libxlsxio_writeConfigVersion.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/lib/pkgconfig/libxlsxio_write.pc -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/cmake/libxlsxio_readConfig.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/cmake/libxlsxio_readConfigVersion.cmake -- Installing: /home/conan/w/prod/BuildSingleReference/.conan/data/xlsxio/0.2.34/_/_/package/c84761dcffd728c405d4e52ef812a5b5b9130ab9/lib/pkgconfig/libxlsxio_read.pc [HOOK - conan-center.py] post_package(): [PACKAGE LICENSE (KB-H012)] OK [HOOK - conan-center.py] post_package(): [DEFAULT PACKAGE LAYOUT (KB-H013)] OK [HOOK - conan-center.py] post_package(): [MATCHING CONFIGURATION (KB-H014)] OK [HOOK - conan-center.py] post_package(): [SHARED ARTIFACTS (KB-H015)] OK [HOOK - conan-center.py] post_package(): [STATIC ARTIFACTS (KB-H074)] OK [HOOK - conan-center.py] post_package(): [EITHER STATIC OR SHARED OF EACH LIB (KB-H076)] OK [HOOK - conan-center.py] post_package(): [PC-FILES (KB-H020)] OK [HOOK - conan-center.py] post_package(): [CMAKE-MODULES-CONFIG-FILES (KB-H016)] OK [HOOK - conan-center.py] post_package(): [PDB FILES NOT ALLOWED (KB-H017)] OK [HOOK - conan-center.py] post_package(): [LIBTOOL FILES PRESENCE (KB-H018)] OK [HOOK - conan-center.py] post_package(): [MS RUNTIME FILES (KB-H021)] OK [HOOK - conan-center.py] post_package(): [SHORT_PATHS USAGE (KB-H066)] OK [HOOK - conan-center.py] post_package(): [MISSING SYSTEM LIBS (KB-H043)] OK [HOOK - conan-center.py] post_package(): [APPLE RELOCATABLE SHARED LIBS (KB-H077)] OK xlsxio/0.2.34 package(): Packaged 3 '.h' files: xlsxio_write.h, xlsxio_version.h, xlsxio_read.h xlsxio/0.2.34 package(): Packaged 2 '.so' files: libxlsxio_write.so, libxlsxio_read.so xlsxio/0.2.34 package(): Packaged 6 files xlsxio/0.2.34 package(): Packaged 1 '.txt' file: LICENSE.txt xlsxio/0.2.34: Package 'c84761dcffd728c405d4e52ef812a5b5b9130ab9' created xlsxio/0.2.34: Created package revision 44d59e4a43a97e0421e55fe3adcf11ed [HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK [HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK [HOOK - conan-center.py] post_package_info(): [INCLUDE PATH DOES NOT EXIST (KB-H071)] OK Aggregating env generators xlsxio/0.2.34: WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior xlsxio/0.2.34: WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior