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https://issues.apache.org/jira/browse/QPID-8187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16996593#comment-16996593
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ASF GitHub Bot commented on QPID-8187:
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chrisrichardson77 commented on pull request #17: QPID-8187 Allow incompatible
function casts for SASL compatibility (GCC 8 onwards)
URL: https://github.com/apache/qpid-cpp/pull/17
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> Incompatible callback function pointer casts fail to build on GCC 8
> -------------------------------------------------------------------
>
> Key: QPID-8187
> URL: https://issues.apache.org/jira/browse/QPID-8187
> Project: Qpid
> Issue Type: Bug
> Components: C++ Broker
> Affects Versions: qpid-cpp-1.38.0
> Environment: Gentoo x64, GCC 8.1
> Reporter: Chris Richardson
> Assignee: Justin Ross
> Priority: Major
> Fix For: qpid-cpp-1.39.0
>
>
> {quote}[ 22%] Building CXX object
> src/CMakeFiles/qpidcommon.dir/qpid/sys/epoll/EpollPoller.cpp.o
> /home/chrisr/projects/qpid/qpid-cpp/source/src/qpid/SaslFactory.cpp: In
> constructor ‘qpid::CyrusSasl::CyrusSasl(const string&, const string&, const
> string&, const string&, int, int, bool)’:
> /home/chrisr/projects/qpid/qpid-cpp/source/src/qpid/SaslFactory.cpp:215:46:
> error: cast between incompatible function types from ‘int (*)(void*, int,
> const char**, unsigned int*)’ to ‘int (*)()’ [-Werror=cast-function-type]
> callbacks[i].proc = (CallbackProc*) &getUserFromSettings;
> ^~~~~~~~~~~~~~~~~~~
> /home/chrisr/projects/qpid/qpid-cpp/source/src/qpid/SaslFactory.cpp:223:50:
> error: cast between incompatible function types from ‘int (*)(sasl_conn_t*,
> void*, int, sasl_secret_t**)’
> Unknown macro: \{aka ‘int (*)(sasl_conn*, void*, int, sasl_secret**)’}
> to ‘int (*)()’ [-Werror=cast-function-type]
> callbacks[i].proc = (CallbackProc*) &getPasswordFromSettings;
> ^~~~~~~~~~~~~~~~~~~~~~
> {quote}
> Given the constrains of the SASL library interface, the only obvious solution
> for this I can think of is to add "-Wno-error=cast-function-type" to the
> compiler settings.
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