supported at all.
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
-@@ -481,6 +481,8 @@
+@@ -479,6 +479,8 @@
my_bool engine_condition_pushdown;
my_bool keep_files_on_create;
goto err;
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
-@@ -6140,6 +6140,10 @@
+@@ -6146,6 +6146,10 @@
uint *idx_end_p;
alter_flags= table->file->alter_table_flags(alter_info->flags);
for (idx_p= index_drop_buffer, idx_end_p= idx_p + index_drop_count;
--- a/sql/sys_vars.cc
+++ b/sql/sys_vars.cc
-@@ -2186,6 +2186,13 @@
+@@ -2265,6 +2265,13 @@
GLOBAL_VAR(opt_optimizer_fix),
NO_CMD_LINE, DEFAULT(TRUE));