BUG #1959: readline error exiting psql

The following bug has been logged online:

Bug reference:      1959
Logged by:          David Wheeler
Email address:      david@kineticode.com
PostgreSQL version: 8.1b3
Operating system:   Mac OS X 10.4 "Tiger"
Description:        readline error exiting psql
Details:

At least it doesn't segfault anymore, but when exiting psql with 8.1b3 on
Mac OS X 10.4 "Tiger" with Apple's wacko readline library, I get the
following error:

  could not save history to file "/Users/david/.psql_history": Invalid
argument

Hrm. No, I just went in and ran a query, then quit, and then it said:

psql(14102) malloc: *** error for object 0x1807000: incorrect checksum for
freed object - object was probably modified after being freed, break at
szone_error to debug
psql(14102) malloc: *** set a breakpoint in szone_error to debug
zsh: segmentation fault  /usr/local/pgsql/bin/psql -U postgres -d sharky

Bummer. The weird thing is that the query I ran does show up in the history
if I go into psql again. Very odd.