VM will crash when specifying TypeProfileWidth=0 on jdk 6u13.

Reproduction:
A is just a class name that does not exist.
---------->
[  xxxxx@xxxxx   J810038]$ ~/XXXXX/jdk6_13/bin/java -version
java version "1.6.0_13"
Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
Java HotSpot(TM) 64-Bit Server VM (build 11.3-b02, mixed mode)

[  xxxxx@xxxxx   J810038]$ ~/XXXXX/jdk6_13/bin/java -server -XX:TypeProfileWidth=0 -Xcomp A
#
# An unexpected error has been detected by Java Runtime Environment:
#
#  Internal Error (ciMethodData.cpp:130), pid=28256, tid=1085491552
#  Error: ShouldNotReachHere()
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (11.3-b02 compiled mode linux-amd64)
# An error report file with more information is saved as:
# /XXXXX/hs_err_pid28256.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#
<----------

The problem was also seen on jdk 6u14 for Windows.
Posted Date : 2009-07-08 06:03:31.0

N/A

Adding an explicit check for TypeProfileWidth == 0 in record_klass_in_profile_helper() and do nothing if TypeProfileWidth is 0 would resolve this issue.
Posted Date : 2009-08-03 09:43:56.0

http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/6918603297f7
Posted Date : 2009-09-02 09:27:02.0

http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/6918603297f7
Posted Date : 2009-09-25 06:36:09.0

http://hg.openjdk.java.net/hsx/hsx16/baseline/rev/47ca7aa20d97
Posted Date : 2009-10-22 01:55:52.0

http://hg.openjdk.java.net/hsx/hsx16/master/rev/47ca7aa20d97
Posted Date : 2009-10-22 08:06:30.0