1 files changed, 1 insertions, 0 deletions
diff --git a/src/build.c b/src/build.c
index 00ff705f7..4c45a9272 100644
--- a/src/build.c
+++ b/src/build.c
@@ -2019,6 +2019,7 @@ static void destroyTable(Parse *pParse, Table *pTab){
       return;
     }else{
       int iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema);
+      assert( iDb>=0 && iDb<pParse->db->nDb );
       destroyRootPage(pParse, iLargest, iDb);
       iDestroyed = iLargest;
     }