The following bug has been logged on the website:
Bug reference: 19342
Logged by: Jason Smith
Email address: dqetool@126.com
PostgreSQL version: 18.0
Operating system: Ubuntu 22.04
Description:
Run the following statements, where the error may be not expected.
```sql
CREATE TABLE t1 (c1 SMALLINT);
SELECT (gcd(c1, c1)) FROM t1; -- ERROR: function gcd(smallint, smallint) is
not unique
```