diff options
Diffstat (limited to 'strings/ctype-uca.c')
| -rw-r--r-- | strings/ctype-uca.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/strings/ctype-uca.c b/strings/ctype-uca.c index 60de0a106a1..2351ee9d932 100644 --- a/strings/ctype-uca.c +++ b/strings/ctype-uca.c @@ -1,5 +1,5 @@ /* Copyright (c) 2004, 2013, Oracle and/or its affiliates. - Copyright (c) 2009, 2014, SkySQL Ab. + Copyright (c) 2009, 2015, MariaDB This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public @@ -20583,7 +20583,25 @@ static int my_uca_scanner_next_any(my_uca_scanner *scanner) if (((mblen= scanner->cs->cset->mb_wc(scanner->cs, wc, scanner->sbeg, scanner->send)) <= 0)) - return -1; + { + if (scanner->sbeg >= scanner->send) + return -1; /* No more bytes, end of line reached */ + /* + There are some more bytes left. Non-positive mb_len means that + we got an incomplete or a bad byte sequence. Consume mbminlen bytes. + */ + if ((scanner->sbeg+= scanner->cs->mbminlen) > scanner->send) + { + /* For safety purposes don't go beyond the string range. */ + scanner->sbeg= scanner->send; + } + /* + Treat every complete or incomplete mbminlen unit as a weight which is + greater than weight for any possible normal character. + 0xFFFF is greater than any possible weight in the UCA weight table. + */ + return 0xFFFF; + } scanner->sbeg+= mblen; if (wc[0] > scanner->level->maxchar) |