make check fails on OS X 10.6.2

All,

I've been installing postgres from source on os x for years, but I haven't generally run 'make check' before I install. I don't feel that running 'make check' is terribly necessary in this case - it's a personal sandbox on my laptop, with no production value. Regardless, I realize that it's beneficial, so I took the extra time today, and ran across this problem.

I've got 8_4_STABLE checked out from CVS, and I've run configure as follows:

./configure --with-bonjour --with-python --with-perl

Configure completed, and 'make' ran successfully.

The relevant output from 'make check' is:

./pg_regress --inputdir=. --dlpath=. --multibyte=SQL_ASCII --load-language=plpgsql --temp-install=./tmp_check --top-builddir=../../.. --schedule=./parallel_schedule
============== creating temporary installation ==============
============== initializing database system ==============

pg_regress: initdb failed
Examine /Users/thart/projects/pgsql/src/test/regress/log/initdb.log for the reason.
Command was: "/Users/thart/projects/pgsql/src/test/regress/./tmp_check/install//usr/local/pgsql/bin/initdb" -D "/Users/thart/projects/pgsql/src/test/regress/./tmp_check/data" -L "/Users/thart/projects/pgsql/src/test/regress/./tmp_check/install//usr/local/pgsql/share" --noclean > "/Users/thart/projects/pgsql/src/test/regress/log/initdb.log" 2>&1

And the contents of src/test/regress/log/initdb.log is:

creating directory /Users/thart/projects/pgsql/src/test/regress/./tmp_check/data ... ok
creating subdirectories ... ok
selecting default max_connections ... 10
selecting default shared_buffers ... 400kB
creating configuration files ... ok
creating template1 database in /Users/thart/projects/pgsql/src/test/regress/./tmp_check/data/base/1 ... FATAL: could not create shared memory segment: Cannot allocate memory
DETAIL: Failed system call was shmget(key=1, size=1613824, 03600).
HINT: This error usually means that PostgreSQL's request for a shared memory segment exceeded available memory or swap

initdb can and does create a valid database cluster when run by itself, and so far I haven't had any issues with 8.4 during very casual use.

Tim