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From a933a516e9b6a4199d22055f9041747e00498901 Mon Sep 17 00:00:00 2001
From: José Aliste <jaliste@src.gnome.org>
Date: Wed, 29 Sep 2010 16:22:32 +0000
Subject: [libdocument] Check for NULL in synctex_backward_search.

Fixes bug #630845
---
diff --git a/libdocument/ev-document.c b/libdocument/ev-document.c
index 70349dc..742b51c 100644
--- a/libdocument/ev-document.c
+++ b/libdocument/ev-document.c
@@ -419,11 +419,16 @@ ev_document_synctex_backward_search (EvDocument *document,
                 /* We assume that a backward search returns either zero or one result_node */
                 node = synctex_next_result (scanner);
                 if (node != NULL) {
-                        result = g_new (EvSourceLink, 1);
-                        result->filename = synctex_scanner_get_name (scanner,
-                                                                     synctex_node_tag (node));
-                        result->line = synctex_node_line (node);
-                        result->col = synctex_node_column (node);
+			const gchar *filename;
+
+			filename = synctex_scanner_get_name (scanner, synctex_node_tag (node));
+			
+			if (filename) {
+				result = g_new (EvSourceLink, 1);
+				result->filename = filename;
+				result->line = synctex_node_line (node);
+				result->col = synctex_node_column (node);
+			}
                 }
         }
 
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