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-rw-r--r--sql/sql_parse.cc4
1 files changed, 3 insertions, 1 deletions
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index e949d40625d..f2458068633 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -1475,9 +1475,9 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
packet++;
length--;
}
+ VOID(pthread_mutex_lock(&LOCK_thread_count));
thd->query_length= length;
thd->query= packet;
- VOID(pthread_mutex_lock(&LOCK_thread_count));
thd->query_id= query_id++;
VOID(pthread_mutex_unlock(&LOCK_thread_count));
#ifndef EMBEDDED_LIBRARY
@@ -1768,6 +1768,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
thd->proc_info=0;
thd->command=COM_SLEEP;
thd->query=0;
+ thd->query_length=0;
thread_running--;
VOID(pthread_mutex_unlock(&LOCK_thread_count));
thd->packet.shrink(thd->variables.net_buffer_length); // Reclaim some memory
@@ -1807,6 +1808,7 @@ bool alloc_query(THD *thd, char *packet, ulong packet_length)
packet_length--;
}
/* We must allocate some extra memory for query cache */
+ thd->query_length= 0; // Extra safety: Avoid races
if (!(thd->query= (char*) thd->memdup_w_gap((gptr) (packet),
packet_length,
thd->db_length+ 1 +