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MDEV-22387: Do not violate __attribute__((nonnull))

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This follows up commit
commit 94a520ddbe and
commit 7c5519c12d.

After these changes, the default test suites on a
cmake -DWITH_UBSAN=ON build no longer fail due to passing
null pointers as parameters that are declared to never be null,
but plenty of other runtime errors remain.
This commit is contained in:
Marko Mäkelä
2020-11-02 14:19:21 +02:00
parent d2fab68667
commit 8036d0a359
22 changed files with 89 additions and 48 deletions
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4
strings/ctype-bin.c
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@ -1,6 +1,6 @@
/* Copyright (c) 2002-2007 MySQL AB & tommy@valley.ne.jp
Copyright (c) 2002, 2014, Oracle and/or its affiliates.
Copyright (c) 2009, 2014, SkySQL Ab.
Copyright (c) 2009, 2020, MariaDB Corporation.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
@ -399,7 +399,7 @@ my_strnxfrm_8bit_bin(CHARSET_INFO *cs,
{
set_if_smaller(srclen, dstlen);
set_if_smaller(srclen, nweights);
if (dst != src)
if (srclen && dst != src)
memcpy(dst, src, srclen);
return my_strxfrm_pad_desc_and_reverse(cs, dst, dst + srclen, dst + dstlen,
(uint)(nweights - srclen), flags, 0);