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Code layout fix for bug N 27079

Thanks to Gluh for suggestion.
pull/73/head
bar@mysql.com 19 years ago
parent
commit
d5c6680443
  1. 33
      strings/ctype-uca.c

33
strings/ctype-uca.c

@ -6777,25 +6777,24 @@ static void my_uca_scanner_init_ucs2(my_uca_scanner *scanner,
scanner->uca_length= cs->sort_order;
scanner->uca_weight= cs->sort_order_big;
scanner->contractions= cs->contractions;
return;
}
else
{
/*
Sometimes this function is called with
str=NULL and length=0, which should be
considered as an empty string.
The above initialization is unsafe for such cases,
because scanner->send is initialized to (NULL-2), which is 0xFFFFFFFE.
Then we fall into an endless loop in my_uca_scanner_next_ucs2().
/*
Sometimes this function is called with
str=NULL and length=0, which should be
considered as an empty string.
The above initialization is unsafe for such cases,
because scanner->send is initialized to (NULL-2), which is 0xFFFFFFFE.
Then we fall into an endless loop in my_uca_scanner_next_ucs2().
Do special initialization for the case when length=0.
Initialize scanner->sbeg to an address greater than scanner->send.
Next call of my_uca_scanner_next_ucs2() will correctly return with -1.
*/
scanner->sbeg= (uchar*) &nochar[1];
scanner->send= (uchar*) &nochar[0];
}
Do special initialization for the case when length=0.
Initialize scanner->sbeg to an address greater than scanner->send.
Next call of my_uca_scanner_next_ucs2() will correctly return with -1.
*/
scanner->sbeg= (uchar*) &nochar[1];
scanner->send= (uchar*) &nochar[0];
}

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