When the JDK_MINOR_VERSION is updated from 6 to 7 the build breaks.

log tail:
>>>Recursively making ../../sun/javac all @ Fri Jun 23 08:06:44 PDT 2006 ...
gnumake[4]: Entering directory `/BUILD_AREA/jdk7/j2se/make/sun/javac'
Begin Processing SUBDIRS: javac recompile javadoc apt
>>>Recursively making javac all @ Fri Jun 23 08:06:44 PDT 2006 ...
gnumake[5]: Entering directory `/BUILD_AREA/jdk7/j2se/make/sun/javac/javac'
/BUILD_AREA/jdk7/control/build/solaris-sparc/bin/java -client -Xmx512m -Xms256m
-classpath ../../../../make/tools/CompileProperties CompileProperties ../../../../src/share/classes/com/sun/tools/javac/resources/compiler.properties /BUILD_AREA/jdk7/control/build/solaris-sparc/gensrc/com/sun/tools/javac/resources/compiler.java
#
# An unexpected error has been detected by Java Runtime Environment:
#
# Internal Error (4E41544956452C4F4F4B55500E435050010E FF), pid=20119, tid=2
#
# Java VM: Java HotSpot(TM) Client VM (1.7.0-ea-b00 mixed mode)
# An error report file with more information is saved as hs_err_pid20119.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#