From 6b614c620ec32cd8d96be880bbc8ff7c45bac7ce Mon Sep 17 00:00:00 2001
From: Oleksandr Byelkin <sanja@mariadb.com>
Date: Tue, 9 Feb 2016 13:50:48 +0100
Subject: [PATCH] MDEV-7765: Crash (Assertion `!table || (!table->write_set ||
 bitmap_is_set(table->write_set, field_index) ||
 bitmap_is_set(table->vcol_set, field_index))' fails) on using function over
 not created table

Problem was that created table was not marked as used (not set query_id) and so opening tables for stored function pick it up (as opened place holder for it) and used changing TABLE internals.
---
 mysql-test/r/create.result | 16 ++++++++++++++++
 mysql-test/t/create.test   | 21 +++++++++++++++++++++
 sql/sql_insert.cc          |  2 ++
 3 files changed, 39 insertions(+)

diff --git a/mysql-test/r/create.result b/mysql-test/r/create.result
index 327b53ce6cd..0164aa4b610 100644
--- a/mysql-test/r/create.result
+++ b/mysql-test/r/create.result
@@ -2483,3 +2483,19 @@ Warnings:
 Note	1291	Column 'a' has duplicated value '' in ENUM
 drop table t1;
 set @@session.collation_server=default;
+#
+# MDEV-7765: Crash (Assertion `!table || (!table->write_set ||
+# bitmap_is_set(table->write_set, field_index) ||
+# bitmap_is_set(table->vcol_set, field_index))' fails)
+# on using function over not created table
+#
+CREATE function f1() returns int
+BEGIN
+declare n int;
+set n:= (select count(*) from t1);
+return n;
+end|
+create table t1 as select f1();
+ERROR 42S02: Table 'test.t1' doesn't exist
+drop function f1;
+End of 5.5 tests
diff --git a/mysql-test/t/create.test b/mysql-test/t/create.test
index e066dc6277d..5c90c3e17a4 100644
--- a/mysql-test/t/create.test
+++ b/mysql-test/t/create.test
@@ -2061,3 +2061,24 @@ set @@session.collation_server=filename;
 create table t1(a enum('',''));
 drop table t1;
 set @@session.collation_server=default;
+
+--echo #
+--echo # MDEV-7765: Crash (Assertion `!table || (!table->write_set ||
+--echo # bitmap_is_set(table->write_set, field_index) ||
+--echo # bitmap_is_set(table->vcol_set, field_index))' fails)
+--echo # on using function over not created table
+--echo #
+
+DELIMITER |;
+CREATE function f1() returns int
+BEGIN
+  declare n int;
+  set n:= (select count(*) from t1);
+  return n;
+end|
+DELIMITER ;|
+-- error ER_NO_SUCH_TABLE
+create table t1 as select f1();
+drop function f1;
+
+--echo End of 5.5 tests
diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc
index 52e059b5ef8..a089f5202aa 100644
--- a/sql/sql_insert.cc
+++ b/sql/sql_insert.cc
@@ -4151,6 +4151,8 @@ select_create::prepare(List<Item> &values, SELECT_LEX_UNIT *u)
     DBUG_RETURN(1);
   table->mark_columns_needed_for_insert();
   table->file->extra(HA_EXTRA_WRITE_CACHE);
+  // Mark table as used
+  table->query_id= thd->query_id;
   DBUG_RETURN(0);
 }