Index: Parser/tokenizer.c
===================================================================
--- Parser/tokenizer.c	(revision 64978)
+++ Parser/tokenizer.c	(working copy)
@@ -1117,7 +1117,7 @@
 	register int c;
 	int blankline;
 
-	*p_start = *p_end = NULL;
+	*p_start = *p_end = tok->line_start = NULL;
   nextline:
 	tok->start = NULL;
 	blankline = 0;