--- trunk/tntnet/dynamic/common.h	2007/11/28 21:02:21	87
+++ trunk/tntnet/dynamic/common.h	2007/11/28 21:56:39	88
@@ -19,7 +19,7 @@
 inline std::string ltrim(const std::string& input)
 {
 	std::string output = input;
-	while ( ! isgraph(output[0]))
+	while (  output.size()>0 && !isgraph(output[0]))
 		output.erase(0,1);
 	return output;
 }
@@ -27,7 +27,7 @@
 inline std::string rtrim(const std::string& input)
 {
 	std::string output = input;
-	while (! isgraph(output[output.size()-1]))
+	while ( output.size()>0 && !isgraph(output[output.size()-1]))
 		output.erase(output.size()-1,1);
 	return output;
 }