com/sun/management/HotSpotDiagnosticMXBean/GetDiagnosticOptions.java
com/sun/management/HotSpotDiagnosticMXBean/SetAllVMOptions.java

MM_REGRESSION/test/com/sun/management/HotSpotDiagnosticMXBean/GetDiagnosticOptions
MM_REGRESSION/test/com/sun/management/HotSpotDiagnosticMXBean/SetAllVMOptions

com/sun/management/HotSpotDiagnosticMXBean/GetDiagnosticOptions
com/sun/management/HotSpotDiagnosticMXBean/SetAllVMOptions
Sample error file:

http://sqeweb.sfbay.sun.com/nfs/results/vm/gtee/JDK7/NIGHTLY/VM/2010-01-07/GC_Baseline/javase/windows-i586/client/mixed/windows-i586_client_mixed_MM_REGRESSION/workDir/com/sun/management/HotSpotDiagnosticMXBean/GetDiagnosticOptions/hs_err_pid94216.log
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=\\management.cpp:1540
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (C:\\temp\\jprt\\P1\\B\\172602.ysr\\source\\src\\share\\vm\\services\\management.cpp:1540), pid=144188, tid=162500
# Error: assert(false,"Unsupported VMGlobal Type")
#
# JRE version: 7.0-b78
# Java VM: OpenJDK Server VM (17.0-b05-2009-12-23-172602.ysr.frag-fastdebug mixed mode windows-x86 )
# An error report file with more information is saved as:
# R:\\results\\vm\\gtee\\JDK7\\NIGHTLY\\VM\\2009-12-25\\GC_Baseline-XXParallel\\javase\\windows-i586\\server\\mixed\\windows-i586_server_mixed_MM_REGRESSION\\workDir\\com\\sun\\management\\HotSpotDiagnosticMXBean\\GetDiagnosticOptions\\hs_err_pid144188.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#


http://sqeweb.sfbay.sun.com/nfs/results/vm/gtee/JDK7/NIGHTLY/VM/2009-12-25/GC_Baseline-XXParallel/javase/windows-i586/server/mixed/windows-i586_server_mixed_MM_REGRESSION/workDir/com/sun/management/HotSpotDiagnosticMXBean/GetDiagnosticOptions.jtr

Sounds like a missing case (is_double()) in the relevant switch statement?