IDEA-53883 Anonymous classes and Ctrl+Shift+Space completion may cause IDE Fatal error

java/java-tests/testData/codeInsight/completion/smartType/WrongAnonymous-out.java

@@ -0,0 +1,21 @@
+import java.io.File;
+import java.io.FilenameFilter;
+
+class Intermediate {
+
+    {
+        new File(".").listFiles(new FilenameFilter() {
+            @Override
+            public boolean accept(File dir, String name) {
+                <selection>return false;  //To change body of implemented methods use File | Settings | File Templates.</selection>
+            }
+        })
+                SwingUtilities.invokeLater(new Runnable() {
+                    public void run() {
+                    }
+                });
+
+
+    }
+
+}

java/java-tests/testData/codeInsight/completion/smartType/WrongAnonymous.java

@@ -0,0 +1,15 @@
+import java.io.File;
+
+class Intermediate {
+
+    {
+        new File(".").listFiles(new FileFilter<caret>
+                SwingUtilities.invokeLater(new Runnable() {
+                    public void run() {
+                    }
+                });
+
+
+    }
+
+}