Chris Richardson created QPID-8187:
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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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