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-rw-r--r--sql/session_tracker.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/session_tracker.cc b/sql/session_tracker.cc
index 7538295fcea..b73bd1d1d4a 100644
--- a/sql/session_tracker.cc
+++ b/sql/session_tracker.cc
@@ -1698,7 +1698,7 @@ void Session_tracker::store(THD *thd, String *buf)
if ((size= net_length_size(length)) != 1)
{
- if (buf->reserve(size - 1, EXTRA_ALLOC))
+ if (buf->reserve(size - 1, 0))
{
buf->length(start); // it is safer to have 0-length block in case of error
return;
@@ -1708,6 +1708,7 @@ void Session_tracker::store(THD *thd, String *buf)
The 'buf->reserve()' can change the buf->ptr() so we cannot
calculate the 'data' earlier.
*/
+ buf->length(buf->length() + (size - 1));
data= (uchar *)(buf->ptr() + start);
memmove(data + (size - 1), data, length);
}