BUG #16941: ECPG add support for const void* - Mailing list pgsql-bugs

The following bug has been logged on the website:

Bug reference:      16941
Logged by:          Bryan Staley
Email address:      bryan.w.staley@gmail.com
PostgreSQL version: 13.1
Operating system:   RHEL 7
Description:

The following doesn't compile via ecpg

```
EXEC SQL BEGIN DECLARE SECTION;
  static const char[2] TEST = "F";
EXEC SQL END DECLARE SECTION;
```

Fails with
error: invalid conversion from 'const void*' to 'void*'