Suspect code generation for "try-with-resource" functionality

Generated java class and its output is different using eclipse with traditional Java

As per specification, In Throwable.addSuppressed() method, if exception is this throwable; a throwable cannot suppress itself in such scenario it should throw java.lang.IllegalArgumentException but the result is varies with using eclipse compiler.

https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html#addSuppressed-java.lang.Throwable-

```
package test;

public class Try_with_Resource {
public static void main(String[] args) {
RuntimeException e = new RuntimeException("My Exception");
try (TestB A = new TestB(e)) {
throw e;
}
}
}

class TestB implements AutoCloseable {
RuntimeException e;
public TestB(RuntimeException e) {
this.e = e;
}

@Override
public void close() {
throw e;
}
}
```

**Output using regular java** (with java 7 version & above)


**Output from eclipse**


**The bytecode of class generated by eclipse vs regular javac**

Using eclipse compiler

```
$ javap -c Try_with_Resource.class
Compiled from "Try_with_Resource.java"
public class test.Try_with_Resource {
public test.Try_with_Resource();
Code:
0: aload_0
1: invokespecial #8 // Method java/lang/Object."":()V
4: return

public static void main(java.lang.String[]);
Code:
0: new #16 // class java/lang/RuntimeException
3: dup
4: ldc #18 // String My Exception
6: invokespecial #20 // Method java/lang/RuntimeException."":(Ljava/lang/String;)V
9: astore_1
10: aconst_null
11: astore_2
12: aconst_null
13: astore_3
14: new #23 // class test/TestB
17: dup
18: aload_1
19: invokespecial #25 // Method test/TestB."":(Ljava/lang/RuntimeException;)V
22: astore 4
24: aload_1
25: athrow
26: astore_2
27: aload 4
29: ifnull 37
32: aload 4
34: invokevirtual #28 // Method test/TestB.close:()V
37: aload_2
38: athrow
39: astore_3
40: aload_2
41: ifnonnull 49
44: aload_3
45: astore_2
46: goto 59
49: aload_2
50: aload_3
51: if_acmpeq 59
54: aload_2
55: aload_3
56: invokevirtual #31 // Method java/lang/Throwable.addSuppressed:(Ljava/lang/Throwable;)V
59: aload_2
60: athrow
Exception table:
from to target type
24 26 26 any
14 39 39 any
}
```

Using Traditional java compiler

```
$ javap -c test/Try_with_Resource
Compiled from "Try_with_Resource.java"
public class test.Try_with_Resource {
public test.Try_with_Resource();
Code:
0: aload_0
1: invokespecial #1 // Method java/lang/Object."":()V
4: return

public static void main(java.lang.String[]);
Code:
0: new #7 // class java/lang/RuntimeException
3: dup
4: ldc #9 // String My Exception
6: invokespecial #11 // Method java/lang/RuntimeException."":(Ljava/lang/String;)V
9: astore_1
10: new #14 // class test/TestB
13: dup
14: aload_1
15: invokespecial #16 // Method test/TestB."":(Ljava/lang/RuntimeException;)V
18: astore_2
19: aload_1
20: athrow
21: astore_3
22: aload_2
23: invokevirtual #21 // Method test/TestB.close:()V
26: goto 37
29: astore 4
31: aload_3
32: aload 4
34: invokevirtual #24 // Method java/lang/Throwable.addSuppressed:(Ljava/lang/Throwable;)V
37: aload_3
38: athrow
Exception table:
from to target type
19 21 21 Class java/lang/Throwable
22 26 29 Class java/lang/Throwable
}
```

I am not sure it might be the reason, I could see generated “Exception table” in java class with eclipse compiler is different from java class generated by the traditional java compiler.