diff -r 37c06d20dda5 Python/marshal.c
--- a/Python/marshal.c	Mon Oct 14 10:44:25 2013 +0300
+++ b/Python/marshal.c	Mon Oct 14 13:32:59 2013 +0100
@@ -614,7 +614,7 @@
     }
     if (!p->readable) {
         assert(p->fp != NULL);
-        /* The result fits into int because it must be <=n. */
+        /* The result fits into ssize_t because n is ssize_t. */
         read = fread(p->buf, 1, n, p->fp);
     }
     else {