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https://issues.apache.org/jira/browse/XALANC-786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Laurent Stacul updated XALANC-786:
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Attachment: fix_cxx20_ostream_operator.patch
> Compilation error with C++20 standard: cause by deleted operator<< in
> std::basic_ostream
> ----------------------------------------------------------------------------------------
>
> Key: XALANC-786
> URL: https://issues.apache.org/jira/browse/XALANC-786
> Project: XalanC
> Issue Type: Bug
> Components: XalanC, XPathC
> Affects Versions: 1.11
> Environment: Ubuntu 18.04 / SLES 12
> Reporter: Laurent Stacul
> Assignee: Gary D. Gregory
> Priority: Major
> Attachments: fix_cxx20_ostream_operator.patch
>
>
> There is a compilation problem when building against the C++20 standard. I am
> using gcc 10.0.1 with the option -std=gnu++2a. This is due to the change
> described here
> (https://en.cppreference.com/w/cpp/io/basic_ostream/operator_ltlt2).
> Here is the error message:
> {code:java}
> g++ -std=gnu++2a -fno-working-directory -ggdb3 -flto -ffat-lto-objects
> -fuse-linker-plugin -g
> -I/home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/DEPS/osp/ICU/uc/latest/osp/include
>
> -I/home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/DEPS/osp/ICU/i18n/latest/osp/include
>
> -I/home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/DEPS/osp/ICU/data/latest/osp/include
> -pthread -D_REENTRANT -fno-elide-constructors -Wall -fPIC -DLINUX
> -D_REENTRANT -DXALAN_INMEM_MSG_LOADER -c
> -I/home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/src
>
> -I/home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/include
> -I../nls/include
> -I/home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/DEPS/osp/Xerces/latest/osp/src/
>
> -I/home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/DEPS/osp/Xerces/latest/osp/include/xercesc
>
> -I/home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/DEPS/osp/Xerces/latest/osp/include/
> -o ../obj/Parameters.o
> /home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/Tests/Performance/Parameters.cpp
> In file included from
> /opt/1A/toolchain/x86_64-v20.0.8/include/c++/10.0.1/backward/strstream:50,
> from
> /home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/src/xalanc/Harness/XalanFileUtility.hpp:32,
> from
> /home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/Tests/Performance/Parameters.cpp:50:
> /opt/1A/toolchain/x86_64-v20.0.8/include/c++/10.0.1/backward/backward_warning.h:32:2:
> warning: #warning This file includes at least one deprecated or antiquated
> header which may be removed without further notice at a future date. Please
> use a non-deprecated interface with equivalent functionality instead. For a
> listing of replacement headers and interfaces, consult the file
> backward_warning.h. To disable this warning use -Wno-deprecated. [-Wcpp]
> 32 | #warning \
> | ^~~~~~~
> In file included from
> /home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/Tests/Performance/Parameters.hpp:39,
> from
> /home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/Tests/Performance/Parameters.cpp:54:
> /home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/Tests/Performance/TestHarness.hpp:
> In member function 'void TestHarness<Processor>::executeTestCase(const
> TestCaseType&)':
> /home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/Tests/Performance/TestHarness.hpp:244:49:
> error: use of deleted function 'std::basic_ostream<char, _Traits>&
> std::operator<<(std::basic_ostream<char, _Traits>&, const char16_t*) [with
> _Traits = std::char_traits<char>]'
> 244 | << testCase.inputMode.c_str()
> | ^
> In file included from
> /opt/1A/toolchain/x86_64-v20.0.8/include/c++/10.0.1/istream:39,
> from /opt/1A/toolchain/x86_64-v20.0.8/include/c++/10.0.1/sstream:38,
> from
> /opt/1A/toolchain/x86_64-v20.0.8/include/c++/10.0.1/bits/quoted_string.h:38,
> from /opt/1A/toolchain/x86_64-v20.0.8/include/c++/10.0.1/iomanip:45,
> from
> /home/jenkins/workspace/htly-ncegcolnx338_release_20.0.0/workdir/components/xalan/BUILD/xalan-c-1.11/c/Tests/Performance/Parameters.cpp:26:
> /opt/1A/toolchain/x86_64-v20.0.8/include/c++/10.0.1/ostream:645:5: note:
> declared here
> 645 | operator<<(basic_ostream<char, _Traits>&, const char16_t*) = delete;
> | ^~~~~~~~{code}
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