2 files changed, 23 insertions, 0 deletions
diff --git a/cpp/src/Ice/BasicStream.cpp b/cpp/src/Ice/BasicStream.cpp
index b8fb3035d27..3ffadc78573 100644
--- a/cpp/src/Ice/BasicStream.cpp
+++ b/cpp/src/Ice/BasicStream.cpp
@@ -274,6 +274,18 @@ IceInternal::BasicStream::ReadEncaps::swap(ReadEncaps& other)
     std::swap(previous, other.previous);
 }
 
+void
+IceInternal::BasicStream::checkReadEncaps()
+{
+    assert(_currentReadEncaps);
+    Container::size_type start = _currentReadEncaps->start;
+    Int sz = _currentReadEncaps->sz;
+    if(i != b.begin() + start + sz)
+    {
+        throw EncapsulationException(__FILE__, __LINE__);
+    }
+}
+
 Int
 IceInternal::BasicStream::getReadEncapsSize()
 {
diff --git a/cpp/src/Ice/Exception.cpp b/cpp/src/Ice/Exception.cpp
index dfa9e70b471..9c79f13c947 100644
--- a/cpp/src/Ice/Exception.cpp
+++ b/cpp/src/Ice/Exception.cpp
@@ -575,6 +575,17 @@ Ice::StringConversionException::ice_print(ostream& out) const
 }
 
 void
+Ice::EncapsulationException::ice_print(ostream& out) const
+{
+    Exception::ice_print(out);
+    out << ":\nprotocol error: illegal encapsulation";
+    if(!reason.empty())
+    {
+        out << ":\n" << reason;
+    }
+}
+
+void
 Ice::NegativeSizeException::ice_print(ostream& out) const
 {
     Exception::ice_print(out);