View creation code fixed to expect empty TABLE_LIST::table pointer (BUG#15096).

mysql-test/r/view.result:
  BUG#15096 test suite.
mysql-test/t/view.test:
  BUG#15096 test suite.
sql/sql_view.cc:
  View placed in a function never get TABLE during view creation,
  because we have never executed that function in this process.
  So we should expect empty TABLE_LIST::table pointer.

mysql-test/r/view.result

@@ -2424,3 +2424,18 @@ f1	sum(f2)
 NULL	12
 drop view v1;
 drop table t1;
+CREATE VIEW v1 AS SELECT 42 AS Meaning;
+DROP FUNCTION IF EXISTS f1;
+CREATE FUNCTION f1() RETURNS INTEGER
+BEGIN
+DECLARE retn INTEGER;
+SELECT Meaning FROM v1 INTO retn;
+RETURN retn;
+END
+//
+CREATE VIEW v2 AS SELECT f1();
+select * from v2;
+f1()
+42
+drop view v2,v1;
+drop function f1;

mysql-test/t/view.test

@@ -2280,3 +2280,24 @@ create view v1 as select * from t1;
 select f1, sum(f2) from v1 group by f1;
 drop view v1;
 drop table t1;
+
+#
+# BUG#15096: using function with view for view creation
+#
+CREATE VIEW v1 AS SELECT 42 AS Meaning;
+--disable_warnings
+DROP FUNCTION IF EXISTS f1;
+--enable_warnings
+DELIMITER //;
+CREATE FUNCTION f1() RETURNS INTEGER
+BEGIN
+  DECLARE retn INTEGER;
+  SELECT Meaning FROM v1 INTO retn;
+  RETURN retn;
+END
+//
+DELIMITER ;//
+CREATE VIEW v2 AS SELECT f1();
+select * from v2;
+drop view v2,v1;
+drop function f1;

sql/sql_view.cc

@@ -350,15 +350,6 @@ bool mysql_create_view(THD *thd,
   */ 
   for (tbl= lex->query_tables; tbl; tbl= tbl->next_global)
   {
-    /* is this table temporary and is not view? */
-    if (tbl->table->s->tmp_table != NO_TMP_TABLE && !tbl->view &&
-        !tbl->schema_table)
-    {
-      my_error(ER_VIEW_SELECT_TMPTABLE, MYF(0), tbl->alias);
-      res= TRUE;
-      goto err;
-    }
-
     /* is this table view and the same view which we creates now? */
     if (tbl->view &&
         strcmp(tbl->view_db.str, view->db) == 0 &&
@@ -369,6 +360,23 @@ bool mysql_create_view(THD *thd,
       goto err;
     }
 
+    /*
+      tbl->table can be NULL when tbl is a placeholder for a view
+      that is indirectly referenced via a stored function from the
+      view being created. We don't check these indirectly
+      referenced views in CREATE VIEW so they don't have table
+      object.
+    */
+    if (tbl->table)
+    {
+      /* is this table temporary and is not view? */
+      if (tbl->table->s->tmp_table != NO_TMP_TABLE && !tbl->view &&
+          !tbl->schema_table)
+      {
+        my_error(ER_VIEW_SELECT_TMPTABLE, MYF(0), tbl->alias);
+        res= TRUE;
+        goto err;
+      }
       /*
         Copy the privileges of the underlying VIEWs which were filled by
         fill_effective_table_privileges
@@ -376,6 +384,7 @@ bool mysql_create_view(THD *thd,
       */
       tbl->table->grant.privilege= tbl->grant.privilege;
     }
+  }
 
   /* prepare select to resolve all fields */
   lex->view_prepare_mode= 1;