Merge with MySQL 5.1.49

Fixed Bug#52005 'JOIN_TAB->dependent' may be incorrectly propageted for multilevel outer joins' in a better way (patch from Sergey Petrunya)

1 files changed, 25 insertions, 5 deletions

diff --git a/libmysql/libmysql.c b/libmysql/libmysql.c
index 26a4ae65908..9c974d25bb0 100644
--- a/libmysql/libmysql.c
+++ b/libmysql/libmysql.c
@@ -328,7 +328,7 @@ sig_handler
 my_pipe_sig_handler(int sig __attribute__((unused)))
 {
   DBUG_PRINT("info",("Hit by signal %d",sig));
-#ifdef DONT_REMEMBER_SIGNAL
+#ifdef SIGNAL_HANDLER_RESET_ON_DELIVERY
   (void) signal(SIGPIPE, my_pipe_sig_handler);
 #endif
 }
@@ -2508,7 +2508,12 @@ static my_bool execute(MYSQL_STMT *stmt, char *packet, ulong length)
   stmt->insert_id= mysql->insert_id;
   if (res)
   {
-    set_stmt_errmsg(stmt, net);
+    /* 
+      Don't set stmt error if stmt->mysql is NULL, as the error in this case 
+      has already been set by mysql_prune_stmt_list(). 
+    */
+    if (stmt->mysql)
+      set_stmt_errmsg(stmt, net);
     DBUG_RETURN(1);
   }
   DBUG_RETURN(0);
@@ -2719,7 +2724,12 @@ stmt_read_row_from_cursor(MYSQL_STMT *stmt, unsigned char **row)
                                             buff, sizeof(buff), (uchar*) 0, 0,
                                             1, stmt))
     {
-      set_stmt_errmsg(stmt, net);
+      /* 
+        Don't set stmt error if stmt->mysql is NULL, as the error in this case 
+        has already been set by mysql_prune_stmt_list(). 
+      */
+      if (stmt->mysql)
+        set_stmt_errmsg(stmt, net);
       return 1;
     }
     if ((*mysql->methods->read_rows_from_cursor)(stmt))
@@ -3400,7 +3410,12 @@ mysql_stmt_send_long_data(MYSQL_STMT *stmt, uint param_number,
                                             buff, sizeof(buff), (uchar*) data,
                                             length, 1, stmt))
     {
-      set_stmt_errmsg(stmt, &mysql->net);
+      /* 
+        Don't set stmt error if stmt->mysql is NULL, as the error in this case 
+        has already been set by mysql_prune_stmt_list(). 
+      */
+      if (stmt->mysql)
+        set_stmt_errmsg(stmt, &mysql->net);
       DBUG_RETURN(1);
     }
   }
@@ -4835,7 +4850,12 @@ int STDCALL mysql_stmt_store_result(MYSQL_STMT *stmt)
     if (cli_advanced_command(mysql, COM_STMT_FETCH, buff, sizeof(buff),
                              (uchar*) 0, 0, 1, stmt))
     {
-      set_stmt_errmsg(stmt, net);
+      /* 
+        Don't set stmt error if stmt->mysql is NULL, as the error in this case 
+        has already been set by mysql_prune_stmt_list(). 
+      */
+      if (stmt->mysql)
+        set_stmt_errmsg(stmt, net);
       DBUG_RETURN(1);
     }
   }