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fix global-buffer-overflow of fix_paths #402

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fix global-buffer-overflow of fix_paths #402

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2 changes: 1 addition & 1 deletion sql/mysqld.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -8327,7 +8327,7 @@ static int fix_paths(void)
my_realpath(mysql_home,mysql_home,MYF(0));
/* Ensure that mysql_home ends in FN_LIBCHAR */
pos=strend(mysql_home);
if (pos[-1] != FN_LIBCHAR)
if (mysql_home == pos || pos[-1] != FN_LIBCHAR)
{
pos[0]= FN_LIBCHAR;
pos[1]= 0;
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