diff --git a/python/src/com/jetbrains/python/codeInsight/controlflow/PyControlFlowBuilder.java b/python/src/com/jetbrains/python/codeInsight/controlflow/PyControlFlowBuilder.java
index d1bce00df3ec..663f795a4429 100644
--- a/python/src/com/jetbrains/python/codeInsight/controlflow/PyControlFlowBuilder.java
+++ b/python/src/com/jetbrains/python/codeInsight/controlflow/PyControlFlowBuilder.java
@@ -52,6 +52,10 @@ public class PyControlFlowBuilder extends PyRecursiveElementVisitor {
   public void visitPyClass(final PyClass node) {
     // Create node and stop here
     myBuilder.startNode(node);
+    final ReadWriteInstruction instruction = ReadWriteInstruction.newInstruction(myBuilder, node, node.getName(),
+                                                                                 ReadWriteInstruction.ACCESS.WRITE);
+    myBuilder.addNode(instruction);
+    myBuilder.checkPending(instruction);
   }
 
   @Override
@@ -64,7 +68,8 @@ public class PyControlFlowBuilder extends PyRecursiveElementVisitor {
   public void visitPyCallExpression(final PyCallExpression node) {
     final PyExpression callee = node.getCallee();
     // Flow abrupted
-    if (callee != null && "sys.exit".equals(PyUtil.getReadableRepr(callee, true))) {
+    if (callee != null && ("sys.exit".equals(PyUtil.getReadableRepr(callee, true)) ||
+                           "fail".equals(callee.getName()))) {
       callee.accept(this);
       for (PyExpression expression : node.getArguments()) {
         expression.accept(this);
diff --git a/python/src/com/jetbrains/python/psi/impl/PythonLanguageLevelPusher.java b/python/src/com/jetbrains/python/psi/impl/PythonLanguageLevelPusher.java
index 8d8cb5b436b4..e66419056233 100644
--- a/python/src/com/jetbrains/python/psi/impl/PythonLanguageLevelPusher.java
+++ b/python/src/com/jetbrains/python/psi/impl/PythonLanguageLevelPusher.java
@@ -170,7 +170,7 @@ public class PythonLanguageLevelPusher implements FilePropertyPusher<LanguageLev
   }
 
   private static void setNoSizeLimitRecursive(VirtualFile file) {
-    file.putUserData(SingleRootFileViewProvider.ourNoSizeLimitKey, Boolean.TRUE);
+    SingleRootFileViewProvider.doNotCheckFileSizeLimit(file);
     for (VirtualFile child : file.getChildren()) {
       setNoSizeLimitRecursive(child);
     }
@@ -180,4 +180,4 @@ public class PythonLanguageLevelPusher implements FilePropertyPusher<LanguageLev
     FORCE_LANGUAGE_LEVEL = languageLevel;
     pushLanguageLevel(project);
   }
-}
\ No newline at end of file
+}
diff --git a/python/src/com/jetbrains/python/refactoring/move/PyMoveClassOrFunctionDelegate.java b/python/src/com/jetbrains/python/refactoring/move/PyMoveClassOrFunctionDelegate.java
index 8efe1f203d46..3731275a9ad7 100644
--- a/python/src/com/jetbrains/python/refactoring/move/PyMoveClassOrFunctionDelegate.java
+++ b/python/src/com/jetbrains/python/refactoring/move/PyMoveClassOrFunctionDelegate.java
@@ -109,15 +109,17 @@ public class PyMoveClassOrFunctionDelegate extends MoveHandlerDelegate {
       doMove(project, new PsiElement[] {element}, null, null);
       return true;
     }
+    if (element instanceof PsiNamedElement) {
+      return true;
+    }
     return false;
   }
 
   @Nullable
   private static PsiNamedElement getElementToMove(@NotNull PsiElement element) {
-    final PsiNamedElement result = PsiTreeUtil.getParentOfType(element, PsiNamedElement.class, false, PyClass.class, PyFunction.class);
-    if (result instanceof PyFunction && ((PyFunction)result).isTopLevel() ||
-        result instanceof PyClass && ((PyClass)result).isTopLevel()) {
-      return result;
+    if (element instanceof PyFunction && ((PyFunction)element).isTopLevel() ||
+        element instanceof PyClass && ((PyClass)element).isTopLevel()) {
+      return (PsiNamedElement)element;
     }
     return null;
   }
diff --git a/python/testData/inspections/PyUnreachableCodeInspection/expected.xml b/python/testData/inspections/PyUnreachableCodeInspection/expected.xml
index f455dfd911bb..5781925361ab 100644
--- a/python/testData/inspections/PyUnreachableCodeInspection/expected.xml
+++ b/python/testData/inspections/PyUnreachableCodeInspection/expected.xml
@@ -26,16 +26,19 @@
     <line>30</line>
     <description>This code is unreachable</description>
   </problem>
-
   <problem>
     <file>unreachable.py</file>
     <line>36</line>
     <description>This code is unreachable</description>
   </problem>
-
   <problem>
     <file>unreachable.py</file>
     <line>46</line>
     <description>This code is unreachable</description>
   </problem>
+  <problem>
+    <file>unreachable.py</file>
+    <line>69</line>
+    <description>This code is unreachable</description>
+  </problem>
 </problems>
diff --git a/python/testData/inspections/PyUnresolvedReferencesInspection/importExceptImportError.py b/python/testData/inspections/PyUnresolvedReferencesInspection/importExceptImportError.py
index c2cf55a09564..4edf12c6253a 100644
--- a/python/testData/inspections/PyUnresolvedReferencesInspection/importExceptImportError.py
+++ b/python/testData/inspections/PyUnresolvedReferencesInspection/importExceptImportError.py
@@ -42,8 +42,18 @@ def f():
 # PY-3869
 def f(x):
     try:
-        from foo import bar
+        from foo import bar #pass
     except ImportError:
         def bar(x):
             return x
-    return bar(x)
\ No newline at end of file
+    return bar(x)
+
+# PY-3919
+def f(x):
+    try:
+        from foo import Bar #pass
+    except ImportError:
+        class Bar(object):
+            pass
+    return Bar()
+