[PATCH] test/jdk/java/beans/PropertyEditor/Test6397609.java failed in JITed code

Fu Jie fujie at loongson.cn
Wed Jan 2 07:01:09 UTC 2019

Hi all,

test/jdk/java/beans/PropertyEditor/Test6397609.java failed in JITed code 
of Test6397609::main.

The failure was caused by the lost of the OopMap item for the object 
loader which was optimized out by the JIT with the liveness analysis 
For more details, see [1].

It seems that Test6397609.java is only suitable for testing interpreters 
which is not adapted to JITs at all.
Different behaviors performed by the interpreter and JITs with the same 
test case really confused people a lot.
And I think it's worth making the test also suitable for JITs.

A tiny change can fix this issue
diff -r b99b41325d89 test/jdk/java/beans/PropertyEditor/Test6397609.java
--- a/test/jdk/java/beans/PropertyEditor/Test6397609.java Tue Jan 01 
20:09:02 2019 -0500
+++ b/test/jdk/java/beans/PropertyEditor/Test6397609.java Wed Jan 02 
12:01:21 2019 +0800
@@ -44,6 +44,7 @@
          if (!isEditorExist(Object.class)) {
              throw new Error("the editor is lost");
+        loader.hashCode(); // prevent being optimized out by JIT
          loader = null; // clean the reference
          if (isEditorExist(Object.class)) {
              throw new Error("unexpected editor is found");

Would you please review it and tell me if it's OK to file on JBS and 
post a webrev.


Best Regards,

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