fix detection of self-references

If the reference points to another sheet, it obviously cannot be
a self-reference.

Change-Id: I3290660e6ed679c84036ab4e65a55bdb369a64e9
Reviewed-on: https://gerrit.libreoffice.org/61188
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>

sc/source/core/data/formulacell.cxx

@@ -4251,7 +4251,7 @@ struct ScDependantsCalculator
 
     bool isSelfReferenceRelative(const ScAddress& rRefPos, SCROW nRelRow)
     {
-        if (rRefPos.Col() != mrPos.Col())
+        if (rRefPos.Col() != mrPos.Col() || rRefPos.Tab() != mrPos.Tab())
             return false;
 
         SCROW nEndRow = mrPos.Row() + mnLen - 1;
@@ -4281,7 +4281,7 @@ struct ScDependantsCalculator
 
     bool isSelfReferenceAbsolute(const ScAddress& rRefPos)
     {
-        if (rRefPos.Col() != mrPos.Col())
+        if (rRefPos.Col() != mrPos.Col() || rRefPos.Tab() != mrPos.Tab())
             return false;
 
         SCROW nEndRow = mrPos.Row() + mnLen - 1;
@@ -4300,8 +4300,11 @@ struct ScDependantsCalculator
     //        isSelfReference[Absolute|Relative]() on both the start and end of the double ref
     bool isDoubleRefSpanGroupRange(const ScRange& rAbs, bool bIsRef1RowRel, bool bIsRef2RowRel)
     {
-        if (rAbs.aStart.Col() > mrPos.Col() || rAbs.aEnd.Col() < mrPos.Col())
+        if (rAbs.aStart.Col() > mrPos.Col() || rAbs.aEnd.Col() < mrPos.Col()
+            || rAbs.aStart.Tab() > mrPos.Tab() || rAbs.aEnd.Tab() < mrPos.Tab())
+        {
             return false;
+        }
 
         SCROW nStartRow    = mrPos.Row();
         SCROW nEndRow      = nStartRow + mnLen - 1;

sc/source/core/data/grouptokenconverter.cxx

@@ -20,7 +20,7 @@ using namespace formula;
 
 bool ScGroupTokenConverter::isSelfReferenceRelative(const ScAddress& rRefPos, SCROW nRelRow)
 {
-    if (rRefPos.Col() != mrPos.Col())
+    if (rRefPos.Col() != mrPos.Col() || rRefPos.Tab() != mrPos.Tab())
         return false;
 
     SCROW nLen = mrCell.GetCellGroup()->mnLength;
@@ -46,7 +46,7 @@ bool ScGroupTokenConverter::isSelfReferenceRelative(const ScAddress& rRefPos, SC
 
 bool ScGroupTokenConverter::isSelfReferenceAbsolute(const ScAddress& rRefPos)
 {
-    if (rRefPos.Col() != mrPos.Col())
+    if (rRefPos.Col() != mrPos.Col() || rRefPos.Tab() != mrPos.Tab())
         return false;
 
     SCROW nLen = mrCell.GetCellGroup()->mnLength;