SA-JDI: allFields() returns inherited fields with wrong declaringType

Name: ipR10196 Date: 02/05/2004


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Test : nsk/sajdi/ReferenceType/allFields/allfields001
VM : ClientVM, ServerVM
Mode : all
Platform : generic
OS : SunOS 5.8
JDK : 1.5.0 b32-b36
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This test checks that method ReferenceType.allFields() returns list
of all declared and inherited fields, including invisible fields
(hidden or ambigous).
For each returned field method TypeComponent.declaringType() should
return ReferenceType of a class or interface in which this field
was declared.

The test demonstrates that for inherited fields declaringType()
always returns reference to the most derived class, regardless of
the real declaring class of the field.

This bug is reproduced with any of SA-JDI connectors, but is NOT
reproduced with legacy JDI connectors.

In contrast, similar method ReferenceType.visibleFields() returns
inherited fields with correct declaringType attributes either
for SA-JDI and legacy JDI connectors.

This test checks a lot of fields of different classes and thus
produces too many errors. I simplified this test by removing
unnecessary fields and checks. The simplified version of the test
declares one field for tested class, its interface and superclass:

    interface Interface3 {
        Object fieldVisibleInterface3PublicStaticObject;
    }

    class SuperClass {
        int fieldVisibleSuperClassPublicInt;
    }

    class TestedClass extends SuperClass implements Interface3 {
        long fieldVisibleTestedClassPublicLong;
    }

Field declared directly in TestedClass is reported correctly:

    field #0
      field name: fieldVisibleTestedClassPublicLong
      type name: long
      signature: J
      decl type: class nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass
                    (loaded by instance of sun.misc.Launcher$AppClassLoader(id=0))
      type name: nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass
      toString:
nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass.fieldVisibleTestedClassPublicLong
      fieldByName:
nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass.fieldVisibleTestedClassPublicLong
           equals: true
      ... found in expected list: #2

Fields inherited from Interface3 and SuperClass are wrongly reported
as declared in TestedClass, so test cannot recognize them as expected.
However, fieldByName() returns correct field related to Interface3
or SuperClass respectively, and it is not equal to original field:

    field #1
      field name: fieldVisibleInterface3PublicStaticObject
      type name: java.lang.Object
      signature: Ljava/lang/Object;
      decl type: class nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass
                    (loaded by instance of sun.misc.Launcher$AppClassLoader(id=0))
      type name: nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass
      toString:
nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass.fieldVisibleInterface3PublicStaticObject
      fieldByName:
nsk.sajdi.ReferenceType.allFields.allfields001aInterface3.fieldVisibleInterface3PublicStaticObject
           equals: false
  # ERROR: ReferenceType.allFields() returned unexpected field:
  # ERROR: field nom: 1
  # ERROR: field name: fieldVisibleInterface3PublicStaticObject
  # ERROR: decl type: nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass
  # ERROR: isSynthetic: false

    field #2
      field name: fieldVisibleSuperClassPublicInt
      type name: int
      signature: I
      decl type: class nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass
                    (loaded by instance of sun.misc.Launcher$AppClassLoader(id=0))
      type name: nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass
      toString:
nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass.fieldVisibleSuperClassPublicInt
      fieldByName:
nsk.sajdi.ReferenceType.allFields.allfields001aSuperClass.fieldVisibleSuperClassPublicInt
           equals: false
  # ERROR: ReferenceType.allFields() returned unexpected field:
  # ERROR: field nom: 2
  # ERROR: field name: fieldVisibleSuperClassPublicInt
  # ERROR: decl type: nsk.sajdi.ReferenceType.allFields.allfields001aTestedClass
  # ERROR: isSynthetic: false

Finally, the test reports that inherited fields declared in
Interface3 and SuperClass were not found in the returned fields list:

  Check if all expected fields found
  # ERROR: ReferenceType.allFields() returned no expected field:
  # ERROR: field name: fieldVisibleInterface3PublicStaticObject
  # ERROR: declared in: Interface3
  # ERROR: found count: 0
  # ERROR: ReferenceType.allFields() returned no expected field:
  # ERROR: field name: fieldVisibleSuperClassPublicInt
  # ERROR: declared in: SuperClass
  # ERROR: found count: 0

To reproduce this failure with simplified testcase:
  cd /net/jano.sfbay/export/disk20/GammaBase/Bugs/<this bug number>
  sh build.sh $JAVA_HOME
  sh run.sh [-pid | -core | -socket] [-g] [-v] $JAVA_HOME [JAVA_OPTS]
where:
    -pid - run test with SA-JDI pid attaching connector (default)
    -core - run test with SA-JDI core attaching connector
    -socket - run test with JDI socket attaching connector
    -g - run test with java_g binaries
    -v - run test in verbose mode

The original testcase will be available in the next r27 testbase release.

Running with SA-JDI connectors on Linux platform this test is crashed
because of known bug:
4975660 SA-JDI: SAPIDAttachingConnector.attach() causes debugger VM crash on Linux

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