8038468: java/lang/instrument/ParallelTransformerLoader.sh fails with ClassCircularityError
Summary: Add check null for loader in transform to avoid when loading a class in callback handler for boot loader, CFLH set early enough to catch classes needed during class loading, i.e. sun.misc.URLClassPath$JarLoader$2 seen in the failure.
Reviewed-by: acorn, sspitsyn
Contributed-by: yumin.qi@oracle.com
README:
This file should be located at the top of the jdk Mercurial repository.
See http://openjdk.java.net/ for more information about the OpenJDK.
Simple Build Instructions:
1. Download and install a JDK 6 from
http://java.sun.com/javase/downloads/index.jsp
Set the environment variable ALT_BOOTDIR to the location of this JDK 6.
2. Either download and install the latest JDK7 from
http://download.java.net/openjdk/jdk7/, or build your own complete
OpenJDK7 by using the top level Makefile in the OpenJDK Mercurial forest.
Set the environment variable ALT_JDK_IMPORT_PATH to the location of
this latest JDK7 or OpenJDK7 build.
3. Check the sanity of doing a build with the current machine:
cd make && gnumake sanity
See README-builds.html if you run into problems.
4. Do a partial build of the jdk:
cd make && gnumake all
5. Construct the images:
cd make && gnumake images
The resulting JDK image should be found in build/*/j2sdk-image