Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm

[Paolo Bonzini]

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) character

This 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