| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)oss(dot)ntt(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [v9.2] make_greater_string() does not return a string in some cases |
| Date: | 2011-10-18 04:11:38 |
| Message-ID: | 26142.1318911098@sss.pgh.pa.us |
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| Lists: | pgsql-bugs pgsql-hackers |
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Mon, Oct 17, 2011 at 11:54 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> http://www.faqs.org/rfcs/rfc3629.html
> I'm still confused. The input string is already known to be valid
> UTF-8, so the second byte (if there is one) must be between 0x80 and
> 0xBF. Therefore it will be neither 0xED nor 0xF4.
I haven't read the patch lately, but ED and F4 are special as *first*
bytes. Maybe the logic isn't quite right, or you read it wrong?
regards, tom lane
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