Closes #970. Statements that use new are wrapped in parens to avoid the closure being used.

lib/nodes.js

@@ -1668,6 +1668,9 @@
       if ((op === 'new' || op === 'typeof' || op === 'delete') || (op === '+' || op === '-') && this.first instanceof Op && this.first.operator === op) {
         parts.push(' ');
       }
+      if (op === 'new' && this.first.isStatement(o)) {
+        this.first = new Parens(this.first);
+      }
       parts.push(this.first.compile(o, LEVEL_OP));
       if (this.flip) {
         parts.reverse();

src/nodes.coffee

@@ -1309,6 +1309,7 @@ exports.Op = class Op extends Base
     parts = [op = @operator]
     parts.push ' ' if op in ['new', 'typeof', 'delete'] or
                       op in ['+', '-'] and @first instanceof Op and @first.operator is op
+    @first = new Parens @first if op is 'new' and @first.isStatement o
     parts.push @first.compile o, LEVEL_OP
     parts.reverse() if @flip
     parts.join ''

test/function_invocation.coffee

@@ -364,3 +364,8 @@ test "don't wrap \"pure\" statements in a closure", ->
     for item in items
       return item if item is nonce
   eq nonce, fn items
+
+#### Unusual `new` Usage
+
+test "usage of `new` is careful about where the invocation parens end up", ->
+  ok 'object' is typeof new try Array