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From: | Paolo Bonzini |
Subject: | Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm |
Date: | Thu, 29 Jul 2010 17:43:24 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.10) Gecko/20100621 Fedora/3.0.5-1.fc13 Lightning/1.0b2pre Thunderbird/3.0.5 |
On 07/29/2010 05:36 PM, Bruno Haible wrote:
Paolo Bonzini wrote:The point is that u8_mbtouc will look only one byte past the end of a (valid or invalid) characterThis is not guaranteed. If you call u8_mbtouc(&uc, needle, 4) you are asserting that needle[0..3] are valid memory addresses.
In practice that's not what happens. The code does guarantee what I wrote. Paolo
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