fatal error in "rpc_flex_table": memory access violation

rpc_tests.cpp

static const CRPCCommand vRPCTestCommands[] =
{ //  category              name                      actor (function)         okSafeMode reqWallet
  //  --------------------- ------------------------  -----------------------  ---------- ---------
    { "network",            "testcmd",                &ping_overwrite_tests,   true,      false },
};

// still unsafe
void addTestCommand()
{
    unsigned int vcidx;
    for (vcidx = 0; vcidx < (sizeof(vRPCTestCommands) / sizeof(vRPCTestCommands[0])); vcidx++)
    {
        tableRPC.AddOrReplaceCommand(vRPCTestCommands[vcidx]);
    }
}

BOOST_AUTO_TEST_CASE(rpc_flex_table)
{
    Value r = CallRPC(string("ping"));
    BOOST_CHECK(r.is_null());

    addTestCommand();

    BOOST_CHECK_NO_THROW(r = CallRPC(string("testcmd")));
    BOOST_CHECK_EQUAL(find_value(r.get_obj(), "Test").get_str(), "123");

    const CRPCCommand newPingCmd = { "network", "ping", &ping_overwrite_tests, true, false };
    tableRPC.AddOrReplaceCommand(newPingCmd);

    BOOST_CHECK_NO_THROW(r = CallRPC(string("ping")));
    BOOST_CHECK_EQUAL(find_value(r.get_obj(), "Test").get_str(), "123");
}

// safe
void addTestConversions()
{
    RPCAddConversion("testcommand", 1);
    RPCAddConversion("testcommand", 2);
}

BOOST_AUTO_TEST_CASE(rpc_add_conversion)
{
    addTestConversions();

    std::vector<std::string> vstrParams;

    vstrParams.push_back("1234");
    vstrParams.push_back("false");
    vstrParams.push_back("481516");

    Array params = RPCConvertValues("testcommand", vstrParams);

    BOOST_CHECK_NO_THROW(params[0].get_str());
    BOOST_CHECK_NO_THROW(params[1].get_bool());
    BOOST_CHECK_NO_THROW(params[2].get_int());

    BOOST_CHECK_THROW(params[0].get_int(), std::runtime_error);

    BOOST_CHECK_EQUAL(params[0].get_str(), "1234");
    BOOST_CHECK_EQUAL(params[1].get_bool(), false);
    BOOST_CHECK_EQUAL(params[2].get_int(), 481516);
}