Fix a bug in scope analysis.

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 3bfc94fbd1ac9392d0e2f42726cc5cf4b13882ab..923faa0b82bee2dc0c894b124fc6894cc7a577e4 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -3641,7 +3641,10 @@ FunctionLiteral* Parser::ParseFunctionLiteral(Handle<String> var_name,
   }
 
   int num_parameters = 0;
-  Scope* scope = NewScope(top_scope_, Scope::FUNCTION_SCOPE, inside_with());
+  // Function declarations are hoisted.
+  Scope* scope = (type == DECLARATION)
+      ? NewScope(top_scope_->DeclarationScope(), Scope::FUNCTION_SCOPE, false)
+      : NewScope(top_scope_, Scope::FUNCTION_SCOPE, inside_with());
   ZoneList<Statement*>* body = new(zone()) ZoneList<Statement*>(8);
   int materialized_literal_count;
   int expected_property_count;