Bug#16500013 : ADD VERSION CHECK TO MYSQL_UPGRADE

(Based on Sinisa's patch)

Added a version checking facility to mysql_upgrade.
The versions used for checking is the version of the
server that mysql_upgrade is going to upgrade and the
server version that mysql_upgrade was build/distributed
with.
Also added an option '--version-check' to enable/disable
the version checking.

1 files changed, 8 insertions, 0 deletions

diff --git a/sql/sql_show.cc b/sql/sql_show.cc
index 4a6568b605a..2811483a0b1 100644
--- a/sql/sql_show.cc
+++ b/sql/sql_show.cc
@@ -2311,6 +2311,14 @@ static bool show_status_array(THD *thd, const char *wild,
         {
           if (!(pos= *(char**) value))
             pos= "";
+
+          DBUG_EXECUTE_IF("alter_server_version_str",
+                          if (!my_strcasecmp(system_charset_info,
+                                             variables->name,
+                                             "version")) {
+                            pos= "some-other-version";
+                          });
+
           end= strend(pos);
           break;
         }