Fixes for AlignedRegion and SequenceImpl (bounds check)

git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/trunk@2227 5a81b35b-ba03-0410-adc8-b2c5c5119f08

modules/seq/base/src/aligned_region.cc

@@ -115,6 +115,9 @@ int AlignedRegion::GetMaster() const
 
 void AlignedRegion::SetMaster(int master)
 {
+  if(master < -1 || master >= aln_.GetCount()){
+    throw IntegrityError("Master out of bounds");
+  }
   master_=master;
 }
 

modules/seq/base/src/impl/sequence_impl.cc

@@ -280,7 +280,7 @@ void SequenceImpl::Replace(const String& str,int start, int end)
 
 void SequenceImpl::ShiftRegion(int start, int end, int amount)
 {
-  if(start > end || start + amount <= 0 || end + amount > this->GetLength()){
+  if(start > end || start + amount < 0 || end + amount > this->GetLength()){
     throw std::out_of_range("ShiftRegion: invalid region");
   }
   String str1=seq_string_.substr(start, end-start);