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Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algo
From: |
Bruno Haible |
Subject: |
Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm |
Date: |
Thu, 29 Jul 2010 17:36:16 +0200 |
User-agent: |
KMail/1.9.9 |
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.
If it's not the case, u8_mbtouc may crash.
You should better use u8_strmbtouc in this case.
Bruno
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, (continued)
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Bruno Haible, 2010/07/28
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Pádraig Brady, 2010/07/29
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Paolo Bonzini, 2010/07/29
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Pádraig Brady, 2010/07/29
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Paolo Bonzini, 2010/07/29
- Message not available
- Message not available
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Paolo Bonzini, 2010/07/29
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm,
Bruno Haible <=
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Paolo Bonzini, 2010/07/29
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Bruno Haible, 2010/07/31
- guarantees of u8_mbtouc/u8_strmbtouc (was Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm), Paolo Bonzini, 2010/07/29
- Re: guarantees of u8_mbtouc/u8_strmbtouc, Bruno Haible, 2010/07/31
- Re: guarantees of u8_mbtouc/u8_strmbtouc, Paolo Bonzini, 2010/07/31
- Re: guarantees of u8_mbtouc/u8_strmbtouc, Bruno Haible, 2010/07/31
- Message not available
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Paolo Bonzini, 2010/07/29
- Re: speed up u8_strstr, Bruno Haible, 2010/07/31
- Re: speed up u8_strstr, Bruno Haible, 2010/07/31
- Re: [PATCH v2 0/5] Speed up uNN_chr and uNN_strchr with Boyer-Moore algorithm, Bruno Haible, 2010/07/28