When the user is unable to log into the database (e.g. 'user'@'localhost' on mysql db localhost:3306/listfilt ) , in this example caused by a permissions issue, mysql_real_connect() returns NULL, which is returned by edbi_open().
euweb does not check for a null return value. This should be fixed, euweb should detect and report when the attempt to connect to the database has failed.
edbi's mysql driver also has a bug, there is no error checking to make sure that dbh is in fact a valid pointer (or at least non-NULL), leading to a machine exception later. There is not much edbi can do about this, but a nicer human readable error (such as 'MySQL database handle is NULL') would be better than just seeing a machine exception.
Accepting.
The new version of edbi is much smarter on this. I just need to pull down the new mercurial repo and go from there.
GitHub