Segmentation fault on prepare_cached with an empty query

[tomhoule]

With the latest version, the following program segfaults on my machine:

use rusqlite::*;

fn main() -> Result<()> {
    let conn = Connection::open_in_memory()?;

    conn.prepare_cached("")?;

    Ok(())
}

rustqlite version: 0.20.0
sqlite version: 3.30.1-1
OS: Arch Linux

[gwenn]

Thank you.
See PR #584 for a fix.
I am not sure how we should handle this case !

[tomhoule]

Thanks for the fix! Should we close this issue, now that the PR is merged? :)

[gwenn]

PR is merged but not released yet.
I will try to release a new version this week.

[tomhoule]

No hurry from our side, we worked around the issue for now.

[gwenn]

Fixed in 0.21