psql can crash the backend on login

Alexandru Popa (razor(at)ldc(dot)ro) reports a bug with a severity of 1
The lower the number the more severe it is.

Short Description
psql can crash the backend on login

Long Description
On a FreeBSD 4.1-STABLE system, launching /usr/local/pgsql/bin/psql and giving control-d as a password will crash the backend.
Note I only tried this on a localhost connection (Unix sockets)

Sample Code
machine% /usr/local/pgsql/bin/psql -U validuser
Password: (hit control-d here)
Password:
Password:
Password:
Password:
Password:
Password:
Password:
Password:
(more of those)
Password:
psql: pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
before or while processing the request.
machine% /usr/local/pgsql/bin/psql -U validuser
psql: connectDBStart() -- connect() failed: No such file or directory
Is the postmaster running at 'localhost'
and accepting connections on Unix socket '5432'?
machine% ps auxw|grep 'post[m]aster'
machine%

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