call the sanity_check function to check the C++ operators are implemented correctly

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@8272 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/perl5/operator_overload_runme.pl

@@ -5,6 +5,9 @@ use operator_overload;
 
 pass("loaded");
 
+# first check all the operators are implemented correctly from pure C++ code
+operator_overloadc::Op_sanity_check();
+
 my $op = operator_overload::Op->new();
 
 isa_ok($op, "operator_overload::Op");