src/jdk.compiler/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -436,11 +436,18 @@
             try {
                 return internalHasNext();
             } catch(ServiceConfigurationError sce) {
                 log.error(Errors.ProcBadConfigFile(sce.getLocalizedMessage()));
                 throw new Abort(sce);
+            } catch (UnsupportedClassVersionError ucve) {
+                log.error(Errors.ProcCantLoadClass(ucve.getLocalizedMessage()));
+                throw new Abort(ucve);
+            } catch (ClassFormatError cfe) {
+                log.error(Errors.ProcCantLoadClass(cfe.getLocalizedMessage()));
+                throw new Abort(cfe);
             } catch (Throwable t) {
+                log.error(Errors.ProcBadConfigFile(t.getLocalizedMessage()));
                 throw new Abort(t);
             }
         }
 
         boolean internalHasNext() {

@@ -453,10 +460,11 @@
                 return internalNext();
             } catch (ServiceConfigurationError sce) {
                 log.error(Errors.ProcBadConfigFile(sce.getLocalizedMessage()));
                 throw new Abort(sce);
             } catch (Throwable t) {
+                log.error(Errors.ProcBadConfigFile(t.getLocalizedMessage()));
                 throw new Abort(t);
             }
         }
 
         Processor internalNext() {