From 5b47c6aa65cd73e208dd941ec75229af5f9c0c67 Mon Sep 17 00:00:00 2001
From: Chris Dyer <cdyer@cab.ark.cs.cmu.edu>
Date: Fri, 20 Jul 2012 01:06:50 -0400
Subject: fix

---
 decoder/scfg_translator.cc | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/decoder/scfg_translator.cc b/decoder/scfg_translator.cc
index aaa6c40b..a978cfc2 100644
--- a/decoder/scfg_translator.cc
+++ b/decoder/scfg_translator.cc
@@ -299,11 +299,12 @@ Check for grammar pointer in the sentence markup, for use with sentence specific
  */
 void SCFGTranslator::ProcessMarkupHintsImpl(const map<string, string>& kv) {
   map<string,string>::const_iterator it = kv.find("grammar");
-
-  TextGrammar* sentGrammar = new TextGrammar(it->second);
-  sentGrammar->SetMaxSpan(pimpl_->max_span_limit);
-  sentGrammar->SetGrammarName(it->second);
-  pimpl_->AddSupplementalGrammar(GrammarPtr(sentGrammar));
+  if (it != kv.end()) {
+    TextGrammar* sentGrammar = new TextGrammar(it->second);
+    sentGrammar->SetMaxSpan(pimpl_->max_span_limit);
+    sentGrammar->SetGrammarName(it->second);
+    pimpl_->AddSupplementalGrammar(GrammarPtr(sentGrammar));
+  }
 }
 
 void SCFGTranslator::AddSupplementalGrammarFromString(const std::string& grammar) {
-- 
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