X-Git-Url: http://git.cyclocoop.org/?a=blobdiff_plain;f=includes%2Fdb%2FCloneDatabase.php;h=bc703f3658b995acdf16426ddd1f937a46681638;hb=3ae13728c4c9fe67629473a7520a9df301024936;hp=3017ea809bda5ec2bcdb94fb86696d55d669e7ba;hpb=1b8657de2ad6c533505f002dba2df8dbe7344bba;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/db/CloneDatabase.php b/includes/db/CloneDatabase.php
index 3017ea809b..bc703f3658 100644
--- a/includes/db/CloneDatabase.php
+++ b/includes/db/CloneDatabase.php
@@ -91,9 +91,14 @@ class CloneDatabase {
 			if ( $this->dropCurrentTables
 				&& !in_array( $this->db->getType(), array( 'postgres', 'oracle' ) )
 			) {
+				if ( $oldTableName === $newTableName ) {
+					// Last ditch check to avoid data loss
+					throw new MWException( "Not dropping new table, as '$newTableName'"
+						. " is name of both the old and the new table." );
+				}
 				$this->db->dropTable( $tbl, __METHOD__ );
 				wfDebug( __METHOD__ . " dropping {$newTableName}\n" );
-				//Dropping the oldTable because the prefix was changed
+				// Dropping the oldTable because the prefix was changed
 			}
 
 			# Create new table