[release/8.0] Properly handle debugger-enumerating interior pointers …

…and enregistered refs (#92360)

* Fix issue with enregistered values

* Fix assert and enregistered ref reporting

* Fix issue from merge

---------

Co-authored-by: Lee Culver <leculver@microsoft.com>
Co-authored-by: Juan Sebastian Hoyos Ayala <juan.hoyos@microsoft.com>
Co-authored-by: Juan Hoyos <19413848+hoyosjs@users.noreply.github.com>

src/coreclr/debug/daccess/dacdbiimpl.cpp

@@ -7788,8 +7788,9 @@ HRESULT DacStackReferenceWalker::Next(ULONG count, DacGcReference stackRefs[], U
  stackRefs[i].i64ExtraData = 0;
 
  const SOSStackRefData &sosStackRef = mList.Get(i);
- if (sosStackRef.Flags & GC_CALL_INTERIOR)
+ if (sosStackRef.Flags & GC_CALL_INTERIOR || sosStackRef.Address == 0)
  {
+ // Direct pointer case - interior pointer, Frame ref, or enregistered var.
  stackRefs[i].pObject = CLRDATA_ADDRESS_TO_TADDR(sosStackRef.Object) | 1;
  }
  else

src/coreclr/debug/di/rsclass.cpp

@@ -132,6 +132,7 @@ HRESULT CordbClass::GetStaticFieldValue(mdFieldDef fieldDef,
  IMetaDataImport * pImport = NULL;
  EX_TRY
  {
+ RSLockHolder lockHolder(GetProcess()->GetProcessLock());
  pImport = GetModule()->GetMetaDataImporter(); // throws
 
  // Validate the token.
@@ -1191,4 +1192,3 @@ HRESULT CordbClass::SearchFieldInfo(
  // Well, the field doesn't even belong to this class...
  ThrowHR(E_INVALIDARG);
 }
-