# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1385674036 -3600
# Node ID a12c5b0c431b443593e07321cd6fe56d9052caec
# Parent  04f2a6949903c214d7df2a2ccafa9a788850f179
Produce a "pass" statement where compound statements are empty.

diff -r 04f2a6949903 -r a12c5b0c431b 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
@@ -1808,7 +1808,8 @@
         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)