# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1385674036 -3600
# Node ID f72b2becdfde43baf9d55faca1dfbe2fbbbc57f3
# Parent  c75cba99b508c907f2e3d76b881eecb444900318
Produce a "pass" statement where compound statements are empty.

diff -r c75cba99b508 -r f72b2becdfde compiler/ast.py
--- a/compiler/ast.py	Sun Nov 17 00:24:20 2013 +0100
+++ b/compiler/ast.py	Thu Nov 28 22:27:16 2013 +0100
@@ -1887,7 +1887,8 @@
         return "Stmt(%r)" % (self.nodes,)
 
     def __str__(self):
-        return "\n".join(map(str, flatten_statement(self.nodes)))
+        nodes = flatten_statement(self.nodes)
+        return "\n".join(map(str, nodes or [Pass()]))
 
     def visit(self, visitor, *args):
         return visitor.visitStmt(self, *args)