MDEV-16930: Crash when VALUES in derived table contains expressions

Give names to the value constructor columns as in SELECT-list.

mysql-test/main/table_value_constr.result

@@ -11,7 +11,7 @@ values (1,2), (3,4), (5.6,0);
 3.0	4
 5.6	0
 values ("abc", "def");
-abc	def
+"abc"	"def"
 abc	def
 # UNION that uses VALUES structure(s)
 select 1,2
@@ -92,7 +92,7 @@ we	q
 values ("ab", "cdf")
 union
 select "ab","cdf";
-ab	cdf
+"ab"	"cdf"
 ab	cdf
 values (1,2)
 union
@@ -2097,3 +2097,21 @@ v
 #
 with t as (values (),()) select 1 from t;
 ERROR HY000: Row with no elements is not allowed in table value constructor in this context
+#
+# MDEV-16930: expression in the first row of TVC specifying derived table
+#
+VALUES(1+1,2);
+1+1	2
+2	2
+SELECT * FROM (VALUES(1+1,2)) t;
+1+1	2
+2	2
+PREPARE stmt FROM "SELECT * FROM (VALUES(1+1,2)) t";
+EXECUTE stmt;
+1+1	2
+2	2
+EXECUTE stmt;
+1+1	2
+2	2
+DEALLOCATE PREPARE stmt;
+# End of 10.3 tests

mysql-test/main/table_value_constr.test

@@ -1075,3 +1075,16 @@ DELIMITER ;|
 
 --error ER_EMPTY_ROW_IN_TVC
 with t as (values (),()) select 1 from t;
+
+--echo #
+--echo # MDEV-16930: expression in the first row of TVC specifying derived table
+--echo #
+
+VALUES(1+1,2);
+SELECT * FROM (VALUES(1+1,2)) t;
+PREPARE stmt FROM "SELECT * FROM (VALUES(1+1,2)) t";
+EXECUTE stmt;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+
+--echo # End of 10.3 tests

sql/sql_yacc.yy

@@ -13306,15 +13306,20 @@ opt_values:
         ;
 
 values:
-          values ','  expr_or_default
+          values ','  remember_name expr_or_default remember_end
           {
-            if (unlikely(Lex->insert_list->push_back($3, thd->mem_root)))
+            if (unlikely(Lex->insert_list->push_back($4, thd->mem_root)))
               MYSQL_YYABORT;
+            // give some name in case of using in table value constuctor (TVC)
+            $4->set_name(thd, $3, (uint) ($5 - $3), thd->charset());
+
           }
-        | expr_or_default
+        | remember_name expr_or_default remember_end
           {
-            if (unlikely(Lex->insert_list->push_back($1, thd->mem_root)))
+            if (unlikely(Lex->insert_list->push_back($2, thd->mem_root)))
               MYSQL_YYABORT;
+            // give some name in case of using in table value constuctor (TVC)
+            $2->set_name(thd, $1, (uint) ($3 - $1), thd->charset());
           }
         ;