[Soot-list] Problem with SOOT: no defs for value

[Eric Bodden]

Hi Matteo.

I also cannot find anything wrong with the generated code, but I am
sure that we are overlooking something. In my experience, Soot is
always right when it comes to such things. It may help to use a
debugger to determine what exactly causes Soot to generate this error
message. The appropriate code should be in soot.Body.validateUses(). I
recommend just setting a breakpoint there and looking at the context.

Eric

--
Dr. Eric Bodden
Software Technology Group, Technische Universität Darmstadt, Germany
Tel: +49 6151 16-5478    Fax: +49 6151 16-5410
Mailing Address: S2|02 A209, Hochschulstraße 10, 64289 Darmstadt



On 31 May 2010 11:14, Matteo Miraz <matteo.miraz at gmail.com> wrote:
> Dear all,
>
> I’m using SOOT to modify some classes and insert some instrumentation
> (for now, to track the basic block coverage). However, I have an error
> when I try to instrument the following method:
>
> package dummy;
> public class Instrumenter1 {
>
>  public int emptyCatch(Object o) {
>   try {
>     return o.hashCode();
>   } catch (Exception e) {
>     return -1;
>   }
>  }
>
> }
>
> The jimple of such method is:
> Method: <dummy.Instrumenter1: emptyCatch(Ljava/lang/Object;)I>
> --- locals ---
>  r0 : dummy.Instrumenter1
>  r1 : java.lang.Object
>  r2 : java.lang.Exception
>  $i0 : int
>  $r3 : java.lang.Exception
> --- units ---
>  0 r0 := @this: dummy.Instrumenter1
>  1 r1 := @parameter0: java.lang.Object
>  2 $i0 = virtualinvoke r1.hashCode()
>  3 return $i0
>  4 $r3 := @caughtexception
>  5 r2 = $r3
>  6 return -1
> --- traps ---
>  2-3 -> (java.lang.Exception) -> 4
>
> The instrumented version becomes:
> --- locals ---
>  r0 : dummy.Instrumenter1
>  r1 : java.lang.Object
>  r2 : java.lang.Exception
>  $i0 : int
>  $r3 : java.lang.Exception
>  __throwable_exc__ : java.lang.Throwable
>  __testful__white_tracker__ : testful.coverage.whiteBox.TrackerWhiteBox
>  __testful_white_condition_target__ : int
>  __testful_white_tmp_double_1__ : double
>  __testful_white_tmp_double_2__ : double
> --- units ---
>  0 r0 := @this: dummy.Instrumenter1
>  1 r1 := @parameter0: java.lang.Object
>  2 __testful__white_tracker__ = staticinvoke
> testful.coverage.whiteBox.TrackerWhiteBox.getTracker()
>  3 __testful_white_condition_target__ = virtualinvoke
> __testful__white_tracker__.getConditionTargetId()
>  4 virtualinvoke __testful__white_tracker__.trackBasicBlock(8)
>  5 $i0 = virtualinvoke r1.hashCode()
>  6 goto 9
>  7 __throwable_exc__ := @caughtexception
>  8 throw __throwable_exc__
>  9 virtualinvoke __testful__white_tracker__.trackBasicBlock(9)
>  10 return $i0
>  11 virtualinvoke __testful__white_tracker__.trackBasicBlock(10)
>  12 $r3 := @caughtexception
>  13 r2 = $r3
>  14 return -1
>  15 __throwable_exc__ := @caughtexception
>  16 throw __throwable_exc__
> --- traps ---
>  5-7 -> (java.lang.Throwable) -> 7
>  4-15 -> (java.lang.Throwable) -> 15
>  4-11 -> (java.lang.Exception) -> 11
>
> To track basick blocks, I use an instance of
> testful.coverage.whiteBox.TrackerWhiteBox, which provides method
> trackBasicBlock(int) to track them. Unit 2 retrieves an instance of
> such class, which is stored in the local  __testful__white_tracker__.
> It is at the beginning of the method, hence it should reach all the
> subsequent uses.
> However, SOOT fails to create the bytecode, and it outputs the following error:
> no defs for value: __testful__white_tracker__! in
> <dummy.Instrumenter1: int emptyCatch(java.lang.Object)>
>
> Can anybody help me?
> Matteo
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