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authorMarko Mäkelä <marko.makela@mariadb.com>2020-11-03 14:49:17 +0200
committerMarko Mäkelä <marko.makela@mariadb.com>2020-11-03 14:49:17 +0200
commit533a13af069d8c9e6c5f4e1a72851497185ade03 (patch)
tree4623752e0c114e582fbbc0afcc02b67dede26b50 /strings
parent4b3690b50433a169d9feed5dc45044a8934b5582 (diff)
parente6290a8270daf884f551230307225b358939bfab (diff)
downloadmariadb-git-533a13af069d8c9e6c5f4e1a72851497185ade03.tar.gz
Merge 10.3 into 10.4
Diffstat (limited to 'strings')
-rw-r--r--strings/ctype-bin.c4
-rw-r--r--strings/ctype-tis620.c6
2 files changed, 6 insertions, 4 deletions
diff --git a/strings/ctype-bin.c b/strings/ctype-bin.c
index 0324c0665e2..bc0d794db3d 100644
--- a/strings/ctype-bin.c
+++ b/strings/ctype-bin.c
@@ -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);
diff --git a/strings/ctype-tis620.c b/strings/ctype-tis620.c
index cbf50c638fd..afc5771d6c5 100644
--- a/strings/ctype-tis620.c
+++ b/strings/ctype-tis620.c
@@ -553,9 +553,11 @@ int my_strnncollsp_tis620(CHARSET_INFO * cs __attribute__((unused)),
alloced= a= (uchar*) my_malloc(a_length+b_length+2, MYF(MY_FAE));
b= a + a_length+1;
- memcpy((char*) a, (char*) a0, a_length);
+ if (a_length)
+ memcpy((char*) a, (char*) a0, a_length);
a[a_length]= 0; /* if length(a0)> len1, need to put 'end of string' */
- memcpy((char *)b, (char *)b0, b_length);
+ if (b_length)
+ memcpy((char *)b, (char *)b0, b_length);
b[b_length]= 0; /* put end of string */
a_length= thai2sortable(a, a_length);
b_length= thai2sortable(b, b_length);