diff -r f6125114b55f Parser/tokenizer.c
--- a/Parser/tokenizer.c	Fri Sep 18 10:09:29 2015 +0300
+++ b/Parser/tokenizer.c	Fri Sep 18 19:40:07 2015 +0300
@@ -1676,6 +1676,10 @@
 PyTokenizer_Get(struct tok_state *tok, char **p_start, char **p_end)
 {
     int result = tok_get(tok, p_start, p_end);
+    if (tok->fp && ferror(tok->fp)) {
+        result = ERRORTOKEN;
+        tok->done = E_EOF;
+    }
     if (tok->decoding_erred) {
         result = ERRORTOKEN;
         tok->done = E_DECODE;