diff -r 3840859e4bb8 -r 09a125a571ff core/sm_stringutil.cpp
--- a/core/sm_stringutil.cpp	Wed Jan 07 16:43:23 2009 -0500
+++ b/core/sm_stringutil.cpp	Wed Jan 07 19:23:24 2009 -0500
@@ -281,7 +281,7 @@
 	}
 
 	// write the fraction part
-	if (maxlen)
+	if (maxlen && prec)
 	{
 		*buf++ = '.';
 		maxlen--;