[JBoss JIRA] Created: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
11 a.m.
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
All of these are demonstrated in my example.
MyTest2.java:
package sample;
import javassist.*;
import javassist.expr.*;
public class MyTest2 {
public static void main(String[] args) throws Exception {
ClassPool pool = ClassPool.getDefault();
final CtClass jdbcCt = pool.get("sample.Bla");
final CtMethod fooMethod = jdbcCt.getDeclaredMethod("foo");
String sourceCode = "{"
+ "System.out.println(\"Bla!\");"
+ "}";
String toInsert =
" try " +
" { " +
sourceCode +
" } " +
" catch(Throwable e) " +
" { " +
" e.printStackTrace(); " +
" } ";
fooMethod.insertBefore(toInsert);
jdbcCt.writeFile(); // update the class file
}
}
Bla.java:
package sample;
public class Bla
{
protected void foo()
{
int j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
switch (1)
{
default:
}
}
}
When I remove some of the repeating statements the exception goes away (BTW, if I remove
just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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If you think it was sent incorrectly contact one of the administrators:
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11:02 a.m.
New subject: [JBoss JIRA] Updated: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand updated JASSIST-74:
-------------------------------
Attachment: MyTest2.java
The class using javassist
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
All of these are demonstrated in my example.
MyTest2.java:
package sample;
import javassist.*;
import javassist.expr.*;
public class MyTest2 {
public static void main(String[] args) throws Exception {
ClassPool pool = ClassPool.getDefault();
final CtClass jdbcCt = pool.get("sample.Bla");
final CtMethod fooMethod = jdbcCt.getDeclaredMethod("foo");
String sourceCode = "{"
+ "System.out.println(\"Bla!\");"
+ "}";
String toInsert =
" try " +
" { " +
sourceCode +
" } " +
" catch(Throwable e) " +
" { " +
" e.printStackTrace(); " +
" } ";
fooMethod.insertBefore(toInsert);
jdbcCt.writeFile(); // update the class file
}
}
Bla.java:
package sample;
public class Bla
{
protected void foo()
{
int j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
switch (1)
{
default:
}
}
}
When I remove some of the repeating statements the exception goes away (BTW, if I remove
just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
https://jira.jboss.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira
11:02 a.m.
New subject: [JBoss JIRA] Updated: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand updated JASSIST-74:
-------------------------------
Attachment: Bla.java
The modified class
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
All of these are demonstrated in my example.
MyTest2.java:
package sample;
import javassist.*;
import javassist.expr.*;
public class MyTest2 {
public static void main(String[] args) throws Exception {
ClassPool pool = ClassPool.getDefault();
final CtClass jdbcCt = pool.get("sample.Bla");
final CtMethod fooMethod = jdbcCt.getDeclaredMethod("foo");
String sourceCode = "{"
+ "System.out.println(\"Bla!\");"
+ "}";
String toInsert =
" try " +
" { " +
sourceCode +
" } " +
" catch(Throwable e) " +
" { " +
" e.printStackTrace(); " +
" } ";
fooMethod.insertBefore(toInsert);
jdbcCt.writeFile(); // update the class file
}
}
Bla.java:
package sample;
public class Bla
{
protected void foo()
{
int j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
switch (1)
{
default:
}
}
}
When I remove some of the repeating statements the exception goes away (BTW, if I remove
just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
https://jira.jboss.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira
11:06 a.m.
New subject: [JBoss JIRA] Updated: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand updated JASSIST-74:
-------------------------------
Description:
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
was:
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
All of these are demonstrated in my example.
MyTest2.java:
package sample;
import javassist.*;
import javassist.expr.*;
public class MyTest2 {
public static void main(String[] args) throws Exception {
ClassPool pool = ClassPool.getDefault();
final CtClass jdbcCt = pool.get("sample.Bla");
final CtMethod fooMethod = jdbcCt.getDeclaredMethod("foo");
String sourceCode = "{"
+ "System.out.println(\"Bla!\");"
+ "}";
String toInsert =
" try " +
" { " +
sourceCode +
" } " +
" catch(Throwable e) " +
" { " +
" e.printStackTrace(); " +
" } ";
fooMethod.insertBefore(toInsert);
jdbcCt.writeFile(); // update the class file
}
}
Bla.java:
package sample;
public class Bla
{
protected void foo()
{
int j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
j = 4;
switch (1)
{
default:
}
}
}
When I remove some of the repeating statements the exception goes away (BTW, if I remove
just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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8:21 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba commented on JASSIST-74:
--------------------------------------
Which compiler are you using? Sun's javac?
It would be helpful if you upload Bla.class before/after the bytecode transformation by
MyTest2.
Thank you!
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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9:48 a.m.
New subject: [JBoss JIRA] Updated: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand updated JASSIST-74:
-------------------------------
Attachment: Bla.class
Attaching the class file as compiled by IBM's javac
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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-
If you think it was sent incorrectly contact one of the administrators:
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-
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9:48 a.m.
New subject: [JBoss JIRA] Updated: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand updated JASSIST-74:
-------------------------------
Attachment: Bla.class
Attaching the class file as compiled with Sun's javac
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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-
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-
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10:11 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand commented on JASSIST-74:
------------------------------------
I cannot attach the class after transformation because of the exception (the class is
never written to the disk).
The compiler I'm using is IBM's compiler as noted above.
Under my WebSphere 6.1 ND installation it's available at: <installation
root>/AppServer/java/bin.
Unfortunately I cannot attach the compiler/JRE.
I think I made a mistake earlier: it doesn't matter which compiler I'm using to
compile, just which runtime I'm using to run javassist. When running with Sun's
everything works. When usign IBM's I get the above exception. Therefore, it seems like
the class files I attached won't help.
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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-
If you think it was sent incorrectly contact one of the administrators:
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-
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5:37 p.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba commented on JASSIST-74:
--------------------------------------
I see that the two Bla.class files are identical (I compared them by the diff tool).
This is weird... is this a bug of IBM J9??
I will download J9 and try your test case with it tomorrow because I am out of office and
my laptop is Mac.
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
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2:41 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba commented on JASSIST-74:
--------------------------------------
I ran sample.MyTest2 with Javassist 3.9 and IBM J9 JVM (the same version that you used)
but I didn't see the exception you reported.
My machine was Windows XP (running on VMware). Are there any hints for reproducing your
bug?
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
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10:38 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand commented on JASSIST-74:
------------------------------------
That's weird, because I and a few other people from my office have had this problem on
multiple environments.
How did you obtain your version of the JVM?
I'll try to find another version that exhibits this behavior and can be easily
downloaded from IBM's site.
For now, all I can add is the contents of the script that runs my sample:
C:\dev\tools\JDK\1.5.0_15\bin\javac -source 1.4 -target 1.4 -classpath ..\javassist.jar
sample\Bla.java sample\MyTest2.java
C:\dev\servers\IBM\WebSphere\5.1\WebSphere\AppServer\java\bin\java -cp .;..\javassist.jar
sample.MyTest2
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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10:43 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand commented on JASSIST-74:
------------------------------------
Oh...
I can't believe I made this mistake...
From the comment above you can obviously see I did not specify the
correct version of the JVM...
When using the version I originally specified the
problem doesn't happen.
The correct version is:
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2)
Classic VM (build 1.4.2, J2RE 1.4.2 IBM Windows 32 build cn1420-20040626 (JIT enabled:
jitc))
I'm truly sorry for this rookie mistake. Hopefully it didn't cost you too much
time.
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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10 p.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba commented on JASSIST-74:
--------------------------------------
I downloaded J9 as a part of WebSphere 6.1 trial. How did you get the IBM JVM 1.4.2?
Part of WebSphere 5.x?
Since the problem would be due to a bug of the IBM JVM, I need to get a copy of that JVM.
Do you know any way to get that JVM? Otherwise, it would be very difficult to investigate
this problem any more...
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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2:54 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand commented on JASSIST-74:
------------------------------------
Yes, I got IBM JVM 1.4.2 by installing WAS 5.1.
However, the problem also happens with WAS 6.0 (which also uses JVM 1.4.2).
You can download WAS 6.0 here:
http://www.ibm.com/developerworks/downloads/ws/was/?S_TACT=105AGX28&S...
I've downloaded it now and extracted the JDK from it.
The problem is reproduced.
You can also download various versions of IBM's J2SE for Linux here:
http://www.ibm.com/developerworks/java/jdk/linux/download.html
I imagine the nature of the problem is not platform dependent.
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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7:22 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba commented on JASSIST-74:
--------------------------------------
I downloaded IBM JVM 1.4.2. Thanks for the info.
It seems that the problem is a bug of that JVM (a bug of the JIT compiler).
But, because WAS 5.1/6.0 is an important platform :-), I modified Javassist to avoid this
bug.
Please try the latest version of Javassist available from the CVS head.
I modified the following loop in javassist.bytecode.CodeIterator.insertGap2:
while (i0 < i2) {
newcode[j++] = code[i0++];
The new code is the following:
while (i0 < i2) {
if (i0 >= code.length)
throw new RuntimeException("jassist-74");
newcode[j++] = 0; i0++;
}
because code[i0++] is always 0.
When I ran the new code with MyTest2, it works fine. The if statement never threw an
exception, either
(this if statement was removed before I checked in the code).
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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7:52 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba commented on JASSIST-74:
--------------------------------------
The above code was a bit wrong. I committed a right fix to the CVS.
Please try the latest.
For rebuilding Javassist, see http://www.csg.is.titech.ac.jp/~chiba/javassist/
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
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10:47 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand commented on JASSIST-74:
------------------------------------
At first the fix worked, but when I increase the number of statements by enough, I get an
ArrayIndexOutOfBoundsException again.
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
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10:49 a.m.
New subject: [JBoss JIRA] Updated: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand updated JASSIST-74:
-------------------------------
Attachment: Bla.java
An example for a large enough source file
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
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5:57 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba commented on JASSIST-74:
--------------------------------------
OK, I will try another way. Please give me several days...
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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6:54 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba commented on JASSIST-74:
--------------------------------------
I checked a new version into the CVS.
Could you try this? I hope everything is now working well.
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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2:20 a.m.
New subject: [JBoss JIRA] Commented: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Mooky Grand commented on JASSIST-74:
------------------------------------
I think that did it.
You can close this bug.
Thanks a lot for all the effort!
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Attachments: Bla.class, Bla.class, Bla.java, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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1:30 a.m.
New subject: [JBoss JIRA] Resolved: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba resolved JASSIST-74.
----------------------------------
Fix Version/s: 3.11.0.GA
Resolution: Done
Thank you for the bug report!
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Fix For: 3.11.0.GA
Attachments: Bla.class, Bla.class, Bla.java, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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1:30 a.m.
New subject: [JBoss JIRA] Closed: (JASSIST-74) modifying a method containing a switch statement using IBM JVM throws ArrayIndexOutOfBoundsException
[
https://jira.jboss.org/jira/browse/JASSIST-74?page=com.atlassian.jira.plu...
]
Shigeru Chiba closed JASSIST-74.
--------------------------------
modifying a method containing a switch statement using IBM JVM throws
ArrayIndexOutOfBoundsException
----------------------------------------------------------------------------------------------------
Key: JASSIST-74
URL: https://jira.jboss.org/jira/browse/JASSIST-74
Project: Javassist
Issue Type: Bug
Affects Versions: 3.8.1.GA
Environment: OS: Probably all. I produced it on Windows
JVM: does not happen with Sun JVM (at least the versions I used). Does happen with
IBM's JVM. I used the following version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pwi32dev-20060511 (SR2))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20060504 (JIT
enabled)
J9VM - 20060501_06428_lHdSMR
JIT - 20060428_1800_r8
GC - 20060501_AA)
JCL - 20060511a
This version comes bundled with Websphere 6.1 ND. The Exact version that I used is
"WebSphere Platform 6.1 [ND 6.1.0.0 b0620.14]"
Reporter: Mooky Grand
Assignee: Shigeru Chiba
Fix For: 3.11.0.GA
Attachments: Bla.class, Bla.class, Bla.java, Bla.java, MyTest2.java
First the exception that I see:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:
-2147483648
at javassist.bytecode.CodeIterator.insertGap2(CodeIterator.java(Compiled Code))
at javassist.bytecode.CodeIterator.insertGap0(CodeIterator.java:656)
at javassist.bytecode.CodeIterator.insertGap(CodeIterator.java:640)
at javassist.bytecode.CodeIterator.insertGapCore(CodeIterator.java:467)
at javassist.bytecode.CodeIterator.insert0(CodeIterator.java:370)
at javassist.bytecode.CodeIterator.insertEx(CodeIterator.java:339)
at javassist.CtBehavior.insertBefore(CtBehavior.java:671)
at javassist.CtBehavior.insertBefore(CtBehavior.java:640)
at sample.MyTest2.main(MyTest2.java:26)
From the little analysis I did I discovered the following:
1. The problem is not reproduced using Sun's JVM.
2. The method being modified must be of a certain length
3. The method must have a switch statement.
4. The added code should be containe dinside a try-catch block.
When I remove some of the repeating statements from Bla.java, the exception goes away
(BTW, if I remove just one there's no exception but the resulting file is corrupted).
Essentially, this prevents me from using Javassist under IBM's JVM for large methods
that contain switch statements.
I've reproduced this problem using javassist 3.4, 3.8 & 3.9.
--
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6272
days inactive
6293
days old
22 comments
2 participants
participants (2)
-
Mooky Grand (JIRA) -
Shigeru Chiba (JIRA)