Laurent Stacul created XALANC-786:
-------------------------------------
Summary: 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
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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