Index: src/vtab.c
==================================================================
--- src/vtab.c
+++ src/vtab.c
@@ -146,12 +146,19 @@
   assert( IsVirtual(pTab) );
 #ifdef SQLITE_ENABLE_SHARED_SCHEMA
   if( IsSharedSchema(db) ){
     int iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
     if( iDb!=1 ){
-      for(pVtab=db->aDb[iDb].pVTable; pVtab; pVtab=pVtab->pNext){
-        if( sqlite3StrICmp(pTab->zName, pVtab->zName)==0 ) break;
+      VTable **pp;
+      for(pp=&db->aDb[iDb].pVTable; *pp; pp=&(*pp)->pNext){
+        if( sqlite3StrICmp(pTab->zName, (*pp)->zName)==0 ) break;
+      }
+      pVtab = *pp;
+      if( pVtab && pTab->nCol<=0 ){
+        *pp = pVtab->pNext;
+        sqlite3VtabUnlock(pVtab);
+        pVtab = 0;
       }
       return pVtab;
     }
   }
 #endif /* ifdef SQLITE_ENABLE_SHARED_SCHEMA */
@@ -662,10 +669,11 @@
   Module *pMod;
   int rc;
 
   assert( pTab );
   if( !IsVirtual(pTab) || sqlite3GetVTable(db, pTab) ){
+    assert( !IsVirtual(pTab) || pTab->nCol>0 );
     return SQLITE_OK;
   }
 
   /* Locate the required virtual table module */
   zMod = pTab->azModuleArg[0];

Index: test/reuse6.test
==================================================================
--- test/reuse6.test
+++ test/reuse6.test
@@ -104,16 +104,36 @@
   sqlite3 db1 test.db -shared-schema 1
   do_execsql_test -db db1 3.1 {
     ATTACH 'test.db2' AS aux;
   }
 
-breakpoint
   do_execsql_test -db db1 3.2 {
     SELECT * FROM main.ft, aux.t1;
   }
 }
+db1 close
+
+#-------------------------------------------------------------------------
+reset_db
+forcedelete test.db2
+ifcapable fts5 {
+  do_execsql_test 4.0 {
+    CREATE VIRTUAL TABLE ft USING fts5(a, b);
+  }
+  forcecopy test.db test.db2
+
+  sqlite3 db1 test.db -shared-schema 1
+  do_execsql_test -db db1 4.1 {
+    ATTACH 'test.db2' AS aux;
+    SELECT * FROM main.ft;
+    SELECT * FROM aux.ft;
+  }
 
+  do_execsql_test -db db1 4.2 {
+    SELECT * FROM main.ft, aux.ft
+  }
+}