Regression: YES, worked fine in b67, broken in b68
Package: J2SE
Version: java full version "1.6.0-rc-b68"
Locale: de_DE.UTF-8, C

Description:
 Mustang 64-bit JVM crashes with SIGSEGV fault after selecting GTK L&F in SwingSet2 application on Solaris9ur8

Bundle tested:
jdk-6-rc-bin-b67-solaris-sparc-12_jan_2006.sh,
jdk-6-rc-bin-b67-solaris-sparcv9-12_jan_2006.sh,
jdk-6-rc-bin-b68-solaris-sparc-19_jan_2006.sh,
jdk-6-rc-bin-b68-solaris-sparcv9-19_jan_2006.sh,
jdk-6-beta2-bin-b79-solaris-sparc-06_apr_2006.sh,
jdk-6-beta2-bin-b79-solaris-sparcv9-06_apr_2006.sh

Platform: SunOS hron 5.9 Generic_118558-11 sun4u sparc SUNW,Sun-Blade-100
bash-2.05$ cat /etc/release
                        Solaris 9 9/05 s9s_u8wos_05 SPARC
           Copyright 2005 Sun Microsystems, Inc. All Rights Reserved.
                        Use is subject to license terms.
                            Assembled 04 August 2005


failure/Error Message(s):

bash-2.05$ /export/home/tester/java/jdk1.6.0_b68/bin/java -d64 -jar /export/home/tester/java/jdk1.6.0_b68/demo/jfc/SwingSet2/SwingSet2.jar
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0xffffffff67016db4, pid=5212, tid=15
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.6.0-rc-b68 mixed mode)
# Problematic frame:
# C [libpango-1.0.so.0.0.5+0x16db4]
#
# An error report file with more information is saved as hs_err_pid5212.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

(hs_err_pid5212.log attached)

Reproduce Step(s):
 1, install jdk-6-rc-bin-b68-solaris-sparc-19_jan_2006.sh & jdk-6-rc-bin-b68-solaris-sparcv9-19_jan_2006.sh bundles into ./jdk1.6.0 directory,
 2, run ./jdk1.6.0/bin/java -d64 -jar ./jdk1.6.0/demo/jfc/SwingSet2/SwingSet2.jar,
 3, switch the L&F to GTK L&F using main menu,
 4, JVM will crash.

Reproducible in previous build(s)? If yes, which previous build(s)?
Not reproducible on: b60, b65, b67 (these were tested)
Reproducible on: b68, b69, b70, b71, b74, b79 (these were tested)