src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Parser.java

*** 2605,2621 ****
                  final int  catchLine  = line;
                  final long catchToken = token;
                  next();
                  expect(LPAREN);
  
!                 // FIXME: ES6 catch parameter can be a BindingIdentifier or a BindingPattern
!                 // We need to generalize this here!
                  // http://www.ecma-international.org/ecma-262/6.0/
!                 final IdentNode exception = getIdent();
! 
                  // ECMA 12.4.1 strict mode restrictions
!                 verifyStrictIdent(exception, "catch argument");
  
                  // Nashorn extension: catch clause can have optional
                  // condition. So, a single try can have more than one
                  // catch clause each with it's own condition.
                  final Expression ifExpression;
--- 2605,2631 ----
                  final int  catchLine  = line;
                  final long catchToken = token;
                  next();
                  expect(LPAREN);
  
!                 // ES6 catch parameter can be a BindingIdentifier or a BindingPattern
                  // http://www.ecma-international.org/ecma-262/6.0/
!                 final String contextString = "catch argument";
!                 final Expression exception = bindingIdentifierOrPattern(contextString);
!                 final boolean isDestructuring = !(exception instanceof IdentNode);
!                 if (isDestructuring) {
!                     verifyDestructuringBindingPattern(exception, new Consumer<IdentNode>() {
!                         @Override
!                         public void accept(final IdentNode identNode) {
!                             verifyIdent(identNode, contextString);
!                         }
!                     });
!                 } else {
                      // ECMA 12.4.1 strict mode restrictions
!                     verifyStrictIdent((IdentNode) exception, "catch argument");
!                 }
! 
  
                  // Nashorn extension: catch clause can have optional
                  // condition. So, a single try can have more than one
                  // catch clause each with it's own condition.
                  final Expression ifExpression;