Index: ext/fts3/fts3_write.c
==================================================================
--- ext/fts3/fts3_write.c
+++ ext/fts3/fts3_write.c
@@ -394,23 +394,24 @@
   assert( SizeofArray(azSql)==SizeofArray(p->aStmt) );
   assert( eStmt<SizeofArray(azSql) && eStmt>=0 );
   
   pStmt = p->aStmt[eStmt];
   if( !pStmt ){
+    int f = SQLITE_PREPARE_PERSISTENT|SQLITE_PREPARE_NO_VTAB;
     char *zSql;
     if( eStmt==SQL_CONTENT_INSERT ){
       zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName, p->zWriteExprlist);
     }else if( eStmt==SQL_SELECT_CONTENT_BY_ROWID ){
+      f &= ~SQLITE_PREPARE_NO_VTAB;
       zSql = sqlite3_mprintf(azSql[eStmt], p->zReadExprlist);
     }else{
       zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName);
     }
     if( !zSql ){
       rc = SQLITE_NOMEM;
     }else{
-      rc = sqlite3_prepare_v3(p->db, zSql, -1, SQLITE_PREPARE_PERSISTENT,
-                              &pStmt, NULL);
+      rc = sqlite3_prepare_v3(p->db, zSql, -1, f, &pStmt, NULL);
       sqlite3_free(zSql);
       assert( rc==SQLITE_OK || pStmt==0 );
       p->aStmt[eStmt] = pStmt;
     }
   }

Index: ext/fts5/fts5_index.c
==================================================================
--- ext/fts5/fts5_index.c
+++ ext/fts5/fts5_index.c
@@ -727,11 +727,12 @@
   char *zSql
 ){
   if( p->rc==SQLITE_OK ){
     if( zSql ){
       p->rc = sqlite3_prepare_v3(p->pConfig->db, zSql, -1,
-                                 SQLITE_PREPARE_PERSISTENT, ppStmt, 0);
+          SQLITE_PREPARE_PERSISTENT|SQLITE_PREPARE_NO_VTAB,
+          ppStmt, 0);
     }else{
       p->rc = SQLITE_NOMEM;
     }
   }
   sqlite3_free(zSql);
@@ -768,27 +769,16 @@
 */
 static void fts5DataDelete(Fts5Index *p, i64 iFirst, i64 iLast){
   if( p->rc!=SQLITE_OK ) return;
 
   if( p->pDeleter==0 ){
-    int rc;
     Fts5Config *pConfig = p->pConfig;
     char *zSql = sqlite3_mprintf(
         "DELETE FROM '%q'.'%q_data' WHERE id>=? AND id<=?", 
           pConfig->zDb, pConfig->zName
     );
-    if( zSql==0 ){
-      rc = SQLITE_NOMEM;
-    }else{
-      rc = sqlite3_prepare_v3(pConfig->db, zSql, -1,
-                              SQLITE_PREPARE_PERSISTENT, &p->pDeleter, 0);
-      sqlite3_free(zSql);
-    }
-    if( rc!=SQLITE_OK ){
-      p->rc = rc;
-      return;
-    }
+    if( fts5IndexPrepareStmt(p, &p->pDeleter, zSql) ) return;
   }
 
   sqlite3_bind_int64(p->pDeleter, 1, iFirst);
   sqlite3_bind_int64(p->pDeleter, 2, iLast);
   sqlite3_step(p->pDeleter);

Index: ext/fts5/fts5_storage.c
==================================================================
--- ext/fts5/fts5_storage.c
+++ ext/fts5/fts5_storage.c
@@ -134,12 +134,13 @@
     }
 
     if( zSql==0 ){
       rc = SQLITE_NOMEM;
     }else{
-      rc = sqlite3_prepare_v3(pC->db, zSql, -1,
-                              SQLITE_PREPARE_PERSISTENT, &p->aStmt[eStmt], 0);
+      int f = SQLITE_PREPARE_PERSISTENT;
+      if( eStmt>FTS5_STMT_LOOKUP ) f |= SQLITE_PREPARE_NO_VTAB;
+      rc = sqlite3_prepare_v3(pC->db, zSql, -1, f, &p->aStmt[eStmt], 0);
       sqlite3_free(zSql);
       if( rc!=SQLITE_OK && pzErrMsg ){
         *pzErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pC->db));
       }
     }

ADDED   ext/fts5/test/fts5circref.test
Index: ext/fts5/test/fts5circref.test
==================================================================
--- /dev/null
+++ ext/fts5/test/fts5circref.test
@@ -0,0 +1,80 @@
+# 2018 Dec 22
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#*************************************************************************
+# This file implements regression tests for SQLite library.  The
+# focus of this script is testing the FTS5 module.
+#
+
+source [file join [file dirname [info script]] fts5_common.tcl]
+set testprefix fts5circref
+
+# If SQLITE_ENABLE_FTS5 is not defined, omit this file.
+ifcapable !fts5 {
+  finish_test
+  return
+}
+
+do_execsql_test 1.0 {
+  CREATE VIRTUAL TABLE tt USING fts5(a);
+  SELECT name FROM sqlite_master ORDER BY 1;
+} {
+  tt tt_config tt_content tt_data tt_docsize tt_idx
+}
+db_save_and_close
+
+foreach {tn schema sql} {
+  1 {
+    CREATE TRIGGER tr1 AFTER INSERT ON tt_config BEGIN
+      SELECT * FROM tt;
+    END;
+  } {
+    INSERT INTO tt(tt, rank) VALUES('usermerge', 4);
+  }
+
+  2 {
+    CREATE TRIGGER tr1 AFTER INSERT ON tt_docsize BEGIN
+      SELECT * FROM tt;
+    END;
+  } {
+    INSERT INTO tt(a) VALUES('one two three');
+  }
+
+  3 {
+    CREATE TRIGGER tr1 AFTER INSERT ON tt_content BEGIN
+      SELECT * FROM tt;
+    END;
+  } {
+    INSERT INTO tt(a) VALUES('one two three');
+  }
+
+  4 {
+    CREATE TRIGGER tr1 AFTER INSERT ON tt_data BEGIN
+      SELECT * FROM tt;
+    END;
+  } {
+    INSERT INTO tt(a) VALUES('one two three');
+  }
+
+  5 {
+    CREATE TRIGGER tr1 AFTER INSERT ON tt_idx BEGIN
+      SELECT * FROM tt;
+    END;
+  } {
+    INSERT INTO tt(a) VALUES('one two three');
+  }
+} {
+  db_restore_and_reopen
+  do_execsql_test 1.1.$tn.1 $schema
+  do_catchsql_test 1.1.$tn.2 $sql {1 {SQL logic error}}
+  db close
+}
+
+
+finish_test

Index: ext/rtree/rtree.c
==================================================================
--- ext/rtree/rtree.c
+++ ext/rtree/rtree.c
@@ -3421,10 +3421,11 @@
     "INSERT OR REPLACE INTO '%q'.'%q_parent' VALUES(?1, ?2)",
     "DELETE FROM '%q'.'%q_parent' WHERE nodeno = ?1"
   };
   sqlite3_stmt **appStmt[N_STATEMENT];
   int i;
+  const int f = SQLITE_PREPARE_PERSISTENT|SQLITE_PREPARE_NO_VTAB;
 
   pRtree->db = db;
 
   if( isCreate ){
     char *zCreate;
@@ -3477,12 +3478,11 @@
        zFormat = "INSERT INTO\"%w\".\"%w_rowid\"(rowid,nodeno)VALUES(?1,?2)"
                   "ON CONFLICT(rowid)DO UPDATE SET nodeno=excluded.nodeno";
     }
     zSql = sqlite3_mprintf(zFormat, zDb, zPrefix);
     if( zSql ){
-      rc = sqlite3_prepare_v3(db, zSql, -1, SQLITE_PREPARE_PERSISTENT,
-                              appStmt[i], 0); 
+      rc = sqlite3_prepare_v3(db, zSql, -1, f, appStmt[i], 0); 
     }else{
       rc = SQLITE_NOMEM;
     }
     sqlite3_free(zSql);
   }
@@ -3508,12 +3508,11 @@
       sqlite3_str_appendf(p, " WHERE rowid=?1");
       zSql = sqlite3_str_finish(p);
       if( zSql==0 ){
         rc = SQLITE_NOMEM;
       }else{
-        rc = sqlite3_prepare_v3(db, zSql, -1, SQLITE_PREPARE_PERSISTENT,
-                                &pRtree->pWriteAux, 0); 
+        rc = sqlite3_prepare_v3(db, zSql, -1, f, &pRtree->pWriteAux, 0); 
         sqlite3_free(zSql);
       }
     }
   }
 

ADDED   ext/rtree/rtreecirc.test
Index: ext/rtree/rtreecirc.test
==================================================================
--- /dev/null
+++ ext/rtree/rtreecirc.test
@@ -0,0 +1,66 @@
+# 2018 Dec 22
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#*************************************************************************
+# This file implements regression tests for SQLite library.  The
+# focus of this script is testing the FTS5 module.
+#
+
+if {![info exists testdir]} {
+  set testdir [file join [file dirname [info script]] .. .. test]
+}
+source [file join [file dirname [info script]] rtree_util.tcl]
+source $testdir/tester.tcl
+set testprefix rtreecirc
+
+ifcapable !rtree {
+  finish_test
+  return
+}
+
+do_execsql_test 1.0 {
+  CREATE VIRTUAL TABLE rt USING rtree(id, x1, x2, y1, y2);
+  SELECT name FROM sqlite_master ORDER BY 1;
+} {
+  rt rt_node rt_parent rt_rowid
+}
+db_save_and_close
+
+foreach {tn schema sql} {
+  1 {
+    CREATE TRIGGER tr1 AFTER INSERT ON rt_node BEGIN
+      SELECT * FROM rt;
+    END;
+  } {
+    INSERT INTO rt VALUES(1, 2, 3, 4, 5);
+  }
+  2 {
+    CREATE TRIGGER tr1 AFTER INSERT ON rt_parent BEGIN
+      SELECT * FROM rt;
+    END;
+  } {
+    INSERT INTO rt VALUES(1, 2, 3, 4, 5);
+  }
+  3 {
+    CREATE TRIGGER tr1 AFTER INSERT ON rt_rowid BEGIN
+      SELECT * FROM rt;
+    END;
+  } {
+    INSERT INTO rt VALUES(1, 2, 3, 4, 5);
+  }
+} {
+  db_restore_and_reopen
+  do_execsql_test  1.1.$tn.1 $schema
+  do_catchsql_test 1.1.$tn.2 $sql {1 {no such table: main.rt}}
+  db close
+}
+
+
+finish_test
+

Index: src/build.c
==================================================================
--- src/build.c
+++ src/build.c
@@ -352,30 +352,36 @@
     return 0;
   }
 
   p = sqlite3FindTable(db, zName, zDbase);
   if( p==0 ){
-    const char *zMsg = flags & LOCATE_VIEW ? "no such view" : "no such table";
 #ifndef SQLITE_OMIT_VIRTUALTABLE
     /* If zName is the not the name of a table in the schema created using
     ** CREATE, then check to see if it is the name of an virtual table that
     ** can be an eponymous virtual table. */
-    Module *pMod = (Module*)sqlite3HashFind(&db->aModule, zName);
-    if( pMod==0 && sqlite3_strnicmp(zName, "pragma_", 7)==0 ){
-      pMod = sqlite3PragmaVtabRegister(db, zName);
-    }
-    if( pMod && sqlite3VtabEponymousTableInit(pParse, pMod) ){
-      return pMod->pEpoTab;
+    if( pParse->disableVtab==0 ){
+      Module *pMod = (Module*)sqlite3HashFind(&db->aModule, zName);
+      if( pMod==0 && sqlite3_strnicmp(zName, "pragma_", 7)==0 ){
+        pMod = sqlite3PragmaVtabRegister(db, zName);
+      }
+      if( pMod && sqlite3VtabEponymousTableInit(pParse, pMod) ){
+        return pMod->pEpoTab;
+      }
     }
 #endif
-    if( (flags & LOCATE_NOERR)==0 ){
-      if( zDbase ){
-        sqlite3ErrorMsg(pParse, "%s: %s.%s", zMsg, zDbase, zName);
-      }else{
-        sqlite3ErrorMsg(pParse, "%s: %s", zMsg, zName);
-      }
-      pParse->checkSchema = 1;
+    if( flags & LOCATE_NOERR ) return 0;
+    pParse->checkSchema = 1;
+  }else if( IsVirtual(p) && pParse->disableVtab ){
+    p = 0;
+  }
+
+  if( p==0 ){
+    const char *zMsg = flags & LOCATE_VIEW ? "no such view" : "no such table";
+    if( zDbase ){
+      sqlite3ErrorMsg(pParse, "%s: %s.%s", zMsg, zDbase, zName);
+    }else{
+      sqlite3ErrorMsg(pParse, "%s: %s", zMsg, zName);
     }
   }
 
   return p;
 }

Index: src/prepare.c
==================================================================
--- src/prepare.c
+++ src/prepare.c
@@ -543,10 +543,11 @@
   */
   if( prepFlags & SQLITE_PREPARE_PERSISTENT ){
     sParse.disableLookaside++;
     db->lookaside.bDisable++;
   }
+  sParse.disableVtab = (prepFlags & SQLITE_PREPARE_NO_VTAB)!=0;
 
   /* Check to verify that it is possible to get a read lock on all
   ** database schemas.  The inability to get a read lock indicates that
   ** some other database connection is holding a write-lock, which in
   ** turn means that the other connection has made uncommitted changes

Index: src/sqlite.h.in
==================================================================
--- src/sqlite.h.in
+++ src/sqlite.h.in
@@ -3634,14 +3634,20 @@
 ** to be required for any prepared statement that wanted to use the
 ** [sqlite3_normalized_sql()] interface.  However, the
 ** [sqlite3_normalized_sql()] interface is now available to all
 ** prepared statements, regardless of whether or not they use this
 ** flag.
+**
+** [[SQLITE_PREPARE_NO_VTAB]] <dt>SQLITE_PREPARE_NO_VTAB</dt>
+** <dd>The SQLITE_PREPARE_NO_VTAB flag causes the SQL compiler
+** to return an error (error code SQLITE_ERROR) if the statement uses
+** any virtual tables.
 ** </dl>
 */
 #define SQLITE_PREPARE_PERSISTENT              0x01
 #define SQLITE_PREPARE_NORMALIZE               0x02
+#define SQLITE_PREPARE_NO_VTAB                 0x04
 
 /*
 ** CAPI3REF: Compiling An SQL Statement
 ** KEYWORDS: {SQL statement compiler}
 ** METHOD: sqlite3

Index: src/sqliteInt.h
==================================================================
--- src/sqliteInt.h
+++ src/sqliteInt.h
@@ -3057,10 +3057,11 @@
   u8 isMultiWrite;     /* True if statement may modify/insert multiple rows */
   u8 mayAbort;         /* True if statement may throw an ABORT exception */
   u8 hasCompound;      /* Need to invoke convertCompoundSelectToSubquery() */
   u8 okConstFactor;    /* OK to factor out constants */
   u8 disableLookaside; /* Number of times lookaside has been disabled */
+  u8 disableVtab;      /* Disable all virtual tables for this parse */
   int nRangeReg;       /* Size of the temporary register block */
   int iRangeReg;       /* First register in temporary register block */
   int nErr;            /* Number of errors seen */
   int nTab;            /* Number of previously allocated VDBE cursors */
   int nMem;            /* Number of memory cells used so far */

Index: src/trigger.c
==================================================================
--- src/trigger.c
+++ src/trigger.c
@@ -914,10 +914,11 @@
   pSubParse->pTriggerTab = pTab;
   pSubParse->pToplevel = pTop;
   pSubParse->zAuthContext = pTrigger->zName;
   pSubParse->eTriggerOp = pTrigger->op;
   pSubParse->nQueryLoop = pParse->nQueryLoop;
+  pSubParse->disableVtab = pParse->disableVtab;
 
   v = sqlite3GetVdbe(pSubParse);
   if( v ){
     VdbeComment((v, "Start: %s.%s (%s %s%s%s ON %s)", 
       pTrigger->zName, onErrorText(orconf),

Index: test/fts3aa.test
==================================================================
--- test/fts3aa.test
+++ test/fts3aa.test
@@ -248,7 +248,18 @@
 }
 do_execsql_test 9.2 {
   CREATE VIRTUAL TABLE t10 USING fts3(<, b, c);
 }
 
+do_execsql_test 10.0 {
+  CREATE VIRTUAL TABLE z1 USING fts3;
+  INSERT INTO z1 VALUES('one two three'),('four one five'),('six two five');
+  CREATE TRIGGER z1r1 AFTER DELETE ON z1_content BEGIN
+    DELETE FROM z1;
+  END;
+}
+do_catchsql_test 10.1 {
+  DELETE FROM z1;
+} {1 {SQL logic error}}
+
 expand_all_sql db
 finish_test