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From "Chris Richardson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (QPID-8187) Incompatible callback function pointer casts fail to build on GCC 8
Date Thu, 10 May 2018 09:57:00 GMT
Chris Richardson created QPID-8187:
--------------------------------------

             Summary: 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
    Affects Versions: qpid-cpp-1.38.0
         Environment: Gentoo x64
            Reporter: Chris Richardson
             Fix For: qpid-cpp-1.39.0


[ 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**)’
\{aka ‘int (*)(sasl_conn*, void*, int, sasl_secret**)’} to ‘int (*)()’ [-Werror=cast-function-type]
 callbacks[i].proc = (CallbackProc*) &getPasswordFromSettings;
 ^~~~~~~~~~~~~~~~~~~~~~~

 

 

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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