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cpp_test_suite/event/event_lock.cpp: Make it compile on 32-bit linux

Thomas Braun requested to merge github/fork/t-b/make-test-compilation-work-on-32bit-linux-minimal into tango-9-lts

The following compile error with gcc 8.3 is generated:

/home/firma/devel/cppTango/cpp_test_suite/event/event_lock.cpp: In function ‘void set_abs_change(std::__cxx11::string, std::__cxx11::string)’: /home/firma/devel/cppTango/cpp_test_suite/event/event_lock.cpp:51:21: error: ambiguous overload for ‘operator<<’ (operand types are ‘Tango::DbDatum’ a nd ‘unsigned int’) attribute_datum << 1u; ~~~~~~~~~~~~~~~~^~~~~ In file included from /home/firma/devel/cppTango/cppapi/server/tango.h:97, from /home/firma/devel/cppTango/cpp_test_suite/event/event_lock.cpp:17: /home/firma/devel/cppTango/cppapi/client/dbapi.h:528:7: note: candidate: ‘void Tango::DbDatum::operator<<(bool)’ void operator << (bool val); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:637:7: note: candidate: ‘void Tango::DbDatum::operator<<(short int)’ void operator << (short); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:638:7: note: candidate: ‘void Tango::DbDatum::operator<<(unsigned char)’ void operator << (unsigned char); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:639:7: note: candidate: ‘void Tango::DbDatum::operator<<(short unsigned int)’ void operator << (unsigned short); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:640:7: note: candidate: ‘void Tango::DbDatum::operator<<(Tango::DevLong)’ void operator << (DevLong); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:641:7: note: candidate: ‘void Tango::DbDatum::operator<<(Tango::DevULong)’ void operator << (DevULong); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:642:7: note: candidate: ‘void Tango::DbDatum::operator<<(Tango::DevLong64)’ void operator << (DevLong64); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:643:7: note: candidate: ‘void Tango::DbDatum::operator<<(Tango::DevULong64)’ void operator << (DevULong64); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:644:7: note: candidate: ‘void Tango::DbDatum::operator<<(float)’ void operator << (float); ^~~~~~~~ /home/firma/devel/cppTango/cppapi/client/dbapi.h:645:7: note: candidate: ‘void Tango::DbDatum::operator<<(double)’ void operator << (double);

By making the fed in variable unsigned long we avoid the error.

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