A quick observation, the use of cflow(within(...)) is going to advise a lot
of places with calls to increment/decrement flow counters, perhaps too
many. Do you think this variant would capture your intent?
pointcut insideTrustedPackage():
within(com.icw.ehf.aspectj.lab.service..*) && execution(* *(..));
It would insert the counter inc/dec code in far fewer places. (maybe need
a '|| staticinitialization()' bit in there too). I've seen this pattern
before, and I wonder if really it is something we should fix inside AspectJ.
That said, it still may violate this JVM restriction. Have you tried it
with recent Java 8 builds, is it the same issue?
Please raise a bug against AspectJ - it'll take some thought to address
this I think.
cheers,
Andy
On 5 September 2014 06:45, <[email protected]> wrote:
> Hi AspectJ Users !
>
> I encountered a strange problem with one of my existing aspects after
> updating to the latest Java 7 version (jdk 1.7.0_67). With this JDK, I
> receive a "java.lang.VerifyError: Bad <init> method call from after the
> start of a try block" when one of my instrumented classes is used.
>
> The verification Error is produced by the following change in the JDK (
> http://hg.openjdk.java.net/jdk7u/jdk7u/hotspot/rev/458f18560343).
>
> I created a small sample project which reproduces the problem and attached
> it to this eMail.
> My production scenario is: Modify the result of a call to a particular
> object if the call originates from an untrusted package.
>
> Therefor, I created the following Aspect:
>
> public aspect Experiment {
> pointcut insideTrustedPackage():
> within(com.icw.ehf.aspectj.lab.service..*);
>
> Object around(com.icw.ehf.aspectj.lab.pojo.SomePojo input):
> !cflow(insideTrustedPackage()) && this(input) {
> System.out.println("from untrusted package " +
> thisJoinPoint.toString());
> return proceed(input);
> }
>
> }
>
> If I use JDK version 1.7.0_55, everything works as expected. However, when
> using JDK 1.7.0_67, running the unit test in my example project results in
> the following VerifyError
>
> java.lang.VerifyError: Bad <init> method call from after the start of a
> try block
> Exception Details:
> Location:
> com/icw/ehf/aspectj/lab/service/SomeService.<init>()V @30:
> invokespecial
> Reason:
> Error exists in the bytecode
> Bytecode:
> 0000000: 2ab2 002b b600 3000 a700 0e3a 0ab2 002b
> 0000010: b600 3319 0abf 00b2 002b b600 3300 b700
> 0000020: 09b2 002b b600 30b2 002b b600 30b2 002b
> 0000030: b600 30b2 000b a700 0c4d b200 2bb6 0033
> 0000040: 2cbf 00b2 002b b600 3300 1211 b200 2bb6
> 0000050: 0030 b600 13a7 000e 3a04 b200 2bb6 0033
> 0000060: 1904 bf00 b200 2bb6 0033 00a7 000e 3a06
> 0000070: b200 2bb6 0033 1906 bfb2 002b b600 33a7
> 0000080: 000e 3a08 b200 2bb6 0033 1908 bfb2 002b
> 0000090: b600 33b1
> Exception Handler Table:
> bci [82, 85] => handler: 88
> bci [51, 54] => handler: 57
> bci [45, 110] => handler: 110
> bci [39, 130] => handler: 130
> bci [7, 8] => handler: 11
> Stackmap Table:
> same_locals_1_stack_item_frame(@11,Object[#57])
> same_locals_1_stack_item_frame(@22,UninitializedThis)
> full_frame(@57,{Object[#1]},{Object[#57]})
> same_locals_1_stack_item_frame(@66,Object[#20])
> same_locals_1_stack_item_frame(@88,Object[#57])
> same_frame(@99)
> same_locals_1_stack_item_frame(@110,Object[#57])
> same_frame(@121)
> same_locals_1_stack_item_frame(@130,Object[#57])
> same_frame(@141)
>
> at
> com.icw.ehf.aspectj.lab.ExperimentAspectTest.test(ExperimentAspectTest.java:13)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
> at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
> at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
>
> I disassembled the bytecode of the SomeService.class which I added to the
> very end of this eMail.
> In this mnemonic representation of the bytecocde, I can see, that the
> actual .<init>() Method call is not the first Java statement in the
> constructor, which the comment in the JDK checkin indicates is no longer
> considered valid.
>
> Unfortunately, I haven't found any useful information regarding this
> problem in the archives.
>
> Has anybody already encountered this issue ?
>
> Or even better, does anybody have a solution for me ?
>
> Your help would be much appreciated !
>
> Thanks in advance,
>
> Jochen Kohler | Software Architect | Managed & Personalized HealthCare
> InterComponentWare AG | Altrottstraße 31 | 69190 Walldorf (Baden) |
> Germany
> Tel.: +49 (0) 6227 385 38 86 | Fax: +49 (0) 6227 385 471
> [email protected] | www.icw.de
>
> Disassembled ByteCode:
> $ javap -c -s bin/com/icw/ehf/aspectj/lab/service/SomeService.class
> Compiled from "SomeService.java"
> public class com.icw.ehf.aspectj.lab.service.SomeService {
> public com.icw.ehf.aspectj.lab.service.SomeService();
> Signature: ()V
> Code:
> 0: aload_0
> 1: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 4: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 7: nop
> 8: goto 22
> 11: astore 10
> 13: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 16: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 19: aload 10
> 21: athrow
> 22: nop
> 23: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 26: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 29: nop
> 30: invokespecial #9 // Method
> java/lang/Object."<init>":()V
> 33: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 36: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 39: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 42: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 45: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 48: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 51: getstatic #11 // Field
> java/lang/System.out:Ljava/io/PrintStream;
> 54: goto 66
> 57: astore_2
> 58: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 61: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 64: aload_2
> 65: athrow
> 66: nop
> 67: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 70: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 73: nop
> 74: ldc #17 // String Constructor
> SomeService
> 76: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 79: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 82: invokevirtual #19 // Method
> java/io/PrintStream.println:(Ljava/lang/String;)V
> 85: goto 99
> 88: astore 4
> 90: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 93: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 96: aload 4
> 98: athrow
> 99: nop
> 100: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 103: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 106: nop
> 107: goto 121
> 110: astore 6
> 112: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 115: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 118: aload 6
> 120: athrow
> 121: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 124: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 127: goto 141
> 130: astore 8
> 132: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 135: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 138: aload 8
> 140: athrow
> 141: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 144: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 147: return
> Exception table:
> from to target type
> 82 85 88 Class java/lang/Throwable
> 51 54 57 Class java/lang/Throwable
> 45 110 110 Class java/lang/Throwable
> 39 130 130 Class java/lang/Throwable
> 7 8 11 Class java/lang/Throwable
>
> public com.icw.ehf.aspectj.lab.pojo.SomePojo retreiveSomePojo();
> Signature: ()Lcom/icw/ehf/aspectj/lab/pojo/SomePojo;
> Code:
> 0: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 3: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 6: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 9: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 12: getstatic #11 // Field
> java/lang/System.out:Ljava/io/PrintStream;
> 15: goto 27
> 18: astore_2
> 19: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 22: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 25: aload_2
> 26: athrow
> 27: nop
> 28: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 31: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 34: nop
> 35: ldc #31 // String
> SomeService#retreiveSomePojo
> 37: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 40: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 43: invokevirtual #19 // Method
> java/io/PrintStream.println:(Ljava/lang/String;)V
> 46: goto 60
> 49: astore 4
> 51: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 54: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 57: aload 4
> 59: athrow
> 60: nop
> 61: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 64: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 67: nop
> 68: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 71: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 74: new #33 // class
> com/icw/ehf/aspectj/lab/pojo/SomePojo
> 77: dup
> 78: invokespecial #35 // Method
> com/icw/ehf/aspectj/lab/pojo/SomePojo."<init>":()V
> 81: goto 95
> 84: astore 6
> 86: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 89: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 92: aload 6
> 94: athrow
> 95: nop
> 96: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 99: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 102: nop
> 103: astore 9
> 105: goto 119
> 108: astore 8
> 110: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 113: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 116: aload 8
> 118: athrow
> 119: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 122: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 125: aload 9
> 127: areturn
> Exception table:
> from to target type
> 74 81 84 Class java/lang/Throwable
> 43 46 49 Class java/lang/Throwable
> 12 15 18 Class java/lang/Throwable
> 6 108 108 Class java/lang/Throwable
>
> static {};
> Signature: ()V
> Code:
> 0: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 3: invokevirtual #48 // Method
> org/aspectj/runtime/internal/CFlowCounter.inc:()V
> 6: goto 31
> 9: astore_1
> 10: aload_1
> 11: instanceof #53 // class
> java/lang/ExceptionInInitializerError
> 14: ifeq 22
> 17: aload_1
> 18: checkcast #53 // class
> java/lang/ExceptionInInitializerError
> 21: athrow
> 22: nop
> 23: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 26: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 29: aload_1
> 30: athrow
> 31: getstatic #43 // Field
> Experiment.ajc$cflowCounter$0:Lorg/aspectj/runtime/internal/CFlowCounter;
> 34: invokevirtual #51 // Method
> org/aspectj/runtime/internal/CFlowCounter.dec:()V
> 37: return
> Exception table:
> from to target type
> 6 9 9 Class java/lang/Throwable
> }
>
>
> InterComponentWare AG:
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> Aufsichtsratsvors.: Prof. Dr. Christof Hettich
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