mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-01-16 12:02:42 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fixed Bug #5492 "set @@session.read_rnd_buffer_size=33554432"

Browse source 
crashes server on query

incremented size of allocated buffer in the init_rr_cache(sql/records.cc)
(
We are going to read the last three bytes of the buffer via uint3korr
This macro reads actually 4 bytes (for speed)
So, we have to allocate one more byte at the end of the buffer 
to avoid memory assertion fault
)
This commit is contained in:
vva@eagle.mysql.r18.ru 2004-09-16 16:10:14 +05:00
parent 38f462ae6f
commit e58c9579fe
1 changed files with 7 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
sql/records.cc
View file

@ -249,9 +249,15 @@ static int init_rr_cache(READ_RECORD *info)
rec_cache_size=info->cache_records*info->reclength;
info->rec_cache_size=info->cache_records*info->ref_length;
/*
We are going to read the last three bytes of the buffer via uint3korr
This macro reads actually 4 bytes (for speed)
So, we have to allocate one more byte at the end of the buffer
to avoid memory assertion fault
*/
if (info->cache_records <= 2 ||
!(info->cache=(byte*) my_malloc_lock(rec_cache_size+info->cache_records*
info->struct_length,
info->struct_length+1,
MYF(0))))
DBUG_RETURN(1);
#ifdef HAVE_purify