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MDEV-22005 UBSAN: applying non-zero offset 2 to null pointer in my_charpos_mb()

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Empty comment has a correct length.
This commit is contained in:
Eugene Kosov
2020-03-23 02:08:01 +03:00
parent 5918b17004
commit 0b00c1a22f
2 changed files with 12 additions and 4 deletions
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6
sql/sql_string.h
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@ -3,7 +3,7 @@
/*
Copyright (c) 2000, 2013, Oracle and/or its affiliates.
Copyright (c) 2008, 2017, MariaDB Corporation.
Copyright (c) 2008, 2020, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -79,6 +79,10 @@ public:
Well_formed_prefix(CHARSET_INFO *cs, const char *str, size_t length)
:Well_formed_prefix_status(cs, str, str + length, length), m_str(str)
{ }
Well_formed_prefix(CHARSET_INFO *cs, LEX_STRING str, size_t nchars)
:Well_formed_prefix_status(cs, str.str, str.str + str.length, nchars),
m_str(str.str)
{ }
size_t length() const { return m_source_end_pos - m_str; }
};