Seg faults using PEAR DB with php mapscript

[Rob P.]

Am getting a segmentation violation error when my php mapscript
application exits. Otherwise, the application runs without errors and
produces the correct results. I am using mapscript with Pear DB to
connect to a postgresql database on a FreeBSD system.

Here is a simple application that loads the mapscript library and then
connects to pgsql. If I remove the dl(php_mapscript) command, there is
no error.

I would like to make sure that it is not my configuration. I would be
grateful if someone would run this code in their unix or linux
environment:

<?php
    ## No error when next line is disabled
    dl('php_mapscript.so');

    require_once 'DB.php';

    $db = @DB::connect("pgsql://nobody:nobody@localhost/geotest");
    error_log("after connect");
    if (DB::isError($db))
        die('checkConnection(): connection error');

    $db->disconnect();
    error_log("disconnected");
?>

Messages in log file:

Jan 14 12:54:42 ursus php: after connect
Jan 14 12:54:42 ursus php: disconnected
Jan 14 12:54:42 ursus /kernel: pid 12663 (php), uid 80: exited on signal 11


I have this problems with several versions of mapserver, php, PGSql,
and FreeBSD.
The particulars:

PHP configured as cgi under Apache.

MapServer version 4.4.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
SUPPORTS=PROJ SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER
SUPPORTS=WMS_CLIENT SUPPORTS=WFS_CLIENT INPUT=EPPL7 INPUT=POSTGIS
INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
Have also experienced this with 4.0.2

OS is FreeBSD 4.9

PHP Version 4.3.10
'./configure' '--prefix=/home/rob/local' '--enable-cgi'
'--enable-force-cgi-redirect' '--enable-fastcgi' '--with-inifile'
'--with-pgsql=shared' '--with-gd' '--with-zlib-dir'
'--with-freetype-dir' '--with-regex=system'

psql (PostgreSQL) 7.4.1

Thanks for your help,
Rob