From: Antoine Pitrou <solipsis@pitrou.net>
Date: Thu, 13 Oct 2011 16:07:37 +0000 (+0200)
Subject: Add a comment explaining this heuristic.
X-Git-Tag: v3.3.0a1~1181
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c198d0599b7be72a1b88c7573897d7535cd89678;p=python

Add a comment explaining this heuristic.
---

diff --git a/Objects/stringlib/fastsearch.h b/Objects/stringlib/fastsearch.h
index 0f7aea74a9..eb3d694cc6 100644
--- a/Objects/stringlib/fastsearch.h
+++ b/Objects/stringlib/fastsearch.h
@@ -115,6 +115,9 @@ FASTSEARCH(const STRINGLIB_CHAR* s, Py_ssize_t n,
             unsigned char needle;
             needle = p[0] & 0xff;
 #if STRINGLIB_SIZEOF_CHAR > 1
+            /* If looking for a multiple of 256, we'd have two
+               many false positives looking for the '\0' byte in UCS2
+               and UCS4 representations. */
             if (needle != 0)
 #endif
                 return STRINGLIB(fastsearch_memchr_1char)