VTB sometimes gets BAD_ACCESS error when getting params in bind() function

[osawyerr]

Hi there,

I'm running on MacOS and trying to use a VTB. Sometimes I get a BAD_ACCESS error in the bind() function when getting the bind parameters. It appears to be intermittent - sometimes it works fine other times it doesn't.

fn bind(
        bind: &BindInfo, bind_data: *mut DemoBindData,
    ) -> Result<(), Box<dyn std::error::Error>> {
        let param_count = bind.get_parameter_count();
        assert_eq!(param_count, 5);

        let query_id = bind.get_parameter(0).to_string(); // sometimes this gives a BAD_ACCESS error.
...

[wangfenjin]

Please provide a reproducible example if possible. Thanks