RVM

Wrong exception from Java reflection

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Critical Critical
  • Resolution: Fixed
  • Affects Version/s: 3.0.1, hg tip
  • Fix Version/s: 3.1.0
  • Component/s: Runtime: Class Library
  • Labels:
    None
  • Environment:
    Intel IA32, Linux 2.6.27, Ubuntu 8.10
  • Testcase included:
    yes
  • Patch Submitted:
    Yes
  • Number of attachments :
    2

Description

It appears that Jikes RVM has a bug in the implementation of its reflection.
For the detail, look at the patch and the test case: reflection.patch and
Reflection.java. Try the following.

1. To see the bug, try the following three command lines.

$javac ReflectionTest.java

$java -showversion ReflectionTest
java version "1.6.0_10"
Java(TM) SE Runtime Environment (build 1.6.0_10-b33)
Java HotSpot(TM) Server VM (build 11.0-b15, mixed mode)

newInstance: pass
invokeVirtual: pass
invokeStatic: pass

$rvm ReflectionTest
...
newInstance: pass
invokeVirtual: fail
unexpected cause of the Invocation target exception:
java.lang.reflect.InvocationTargetException
...
invokeStatic: fail
unexpected cause of the Invocation target exception:

2. To correct the bug, try the following.

  • Apply the patch: reflection.patch
  • Build Jikes RVM
  • Run it

$rvm ReflectionTest
newInstance: pass
invokeVirtual: pass
invokeStatic: pass

  1. Text File
    reflection.patch
    14/Apr/09 3:05 PM
    3 kB
    Byeong Lee
  2. Java Source File
    ReflectionTest.java
    14/Apr/09 3:05 PM
    4 kB
    Byeong Lee

Activity

Ascending order - Click to sort in descending order
Hide
Permalink
Ian Rogers added a comment -

Also tracked with a better break down of the actual problem in MRP: http://jira.codehaus.org/browse/MRP-3

Show
Ian Rogers added a comment - Also tracked with a better break down of the actual problem in MRP: http://jira.codehaus.org/browse/MRP-3
Hide
Permalink
Filip Pizlo added a comment -

Patch committed in r15700.

Show
Filip Pizlo added a comment - Patch committed in r15700.
Hide
Permalink
Ian Rogers added a comment -

Just FYI, MRP won't apply this patch as it is incorrect.

Show
Ian Rogers added a comment - Just FYI, MRP won't apply this patch as it is incorrect.
Hide
Permalink
David Grove added a comment -

testing alternate fix.

Show
David Grove added a comment - testing alternate fix.
Hide
Permalink
David Grove added a comment -

alternate fix committed in r15701.

Show
David Grove added a comment - alternate fix committed in r15701.

People

  • Assignee:
    David Grove
    Reporter:
    Byeong Lee
Vote (0)
Watch (0)

Dates

  • Created:
    Updated:
    Resolved: