Correctly handle virtual tables that are created and dropped all within

a single transaction.  Ticket #2994. (CVS 4985)

FossilOrigin-Name: 0acb1b428d1181f597a2a665cae3eef5775f15f1

manifest

@@ -1,5 +1,5 @@
-C Add\sthe\s--ostrace\sand\s--ossummary\soptions\sto\stester.tcl.\sTo\slog\scalls\sthe\svfs\slayer\sfrom\swithin\stest\sscripts.\s(CVS\s4984)
-D 2008-04-10T17:27:39
+C Correctly\shandle\svirtual\stables\sthat\sare\screated\sand\sdropped\sall\swithin\na\ssingle\stransaction.\s\sTicket\s#2994.\s(CVS\s4985)
+D 2008-04-10T18:35:22
 F Makefile.arm-wince-mingw32ce-gcc ac5f7b2cef0cd850d6f755ba6ee4ab961b1fadf7
 F Makefile.in b861627d91df5ee422c54237aa38296954dc0151
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -183,7 +183,7 @@ F src/vdbeaux.c 0aa2d8ede6bdb4379c36491c14d9779221bf196d
 F src/vdbeblob.c cc713c142c3d4952b380c98ee035f850830ddbdb
 F src/vdbefifo.c a30c237b2a3577e1415fb6e288cbb6b8ed1e5736
 F src/vdbemem.c 095e18f84b3171a5f2d71fa93a4bfc64220c1cfe
-F src/vtab.c 00cd16317b29495c185ff40e4b227917d5a371b2
+F src/vtab.c f5e78bf73df3b0c1b53861109c1b2e0800b108cc
 F src/where.c a686f1e04f1ce5515a801fb3f3a358ef2cbb6ed2
 F tclinstaller.tcl 4356d9d94d2b5ed5e68f9f0c80c4df3048dd7617
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
@@ -535,6 +535,7 @@ F test/vtab7.test a8c3c3cb3eb60be364991bd714e4927e26c4cd85
 F test/vtab8.test e19fa4a538fcd1bb66c22825fa8f71618fb13583
 F test/vtab9.test ea58d2b95d61955f87226381716b2d0b1d4e4f9b
 F test/vtabA.test 9cb6b1afead6fdd91bbdf1ca65c44ccfd9b10936
+F test/vtabB.test a02264feac9e41a7696869dbd6f993a8b597f7c3
 F test/vtab_alter.test 3a299749fee97ca3d53bd55717f536e4a2284856
 F test/vtab_err.test 0d4d8eb4def1d053ac7c5050df3024fd47a3fbd8
 F test/vtab_shared.test c19b2555b807ef2ee014c882cdda5bc8d84fcf48
@@ -626,7 +627,7 @@ F www/tclsqlite.tcl 8be95ee6dba05eabcd27a9d91331c803f2ce2130
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
-P 5be56dbe879f89351239accf5069e4cb166e0792
-R d1764f0c0bff8d613b92eb445b05f051
-U danielk1977
-Z 5ce16846520ccc3e314c2b13bb59694a
+P e1322415d0ca2d6b45f35ef9257b37161ec043e2
+R 960260f49432fa437b9ba29c71e0b40e
+U drh
+Z a3b69fd90c8092644f44487d1febdaf0

manifest.uuid

@@ -1 +1 @@
-e1322415d0ca2d6b45f35ef9257b37161ec043e2
+0acb1b428d1181f597a2a665cae3eef5775f15f1

src/vtab.c

@@ -11,7 +11,7 @@
 *************************************************************************
 ** This file contains code used to help implement virtual tables.
 **
-** $Id: vtab.c,v 1.65 2008/03/06 09:58:50 mlcreech Exp $
+** $Id: vtab.c,v 1.66 2008/04/10 18:35:22 drh Exp $
 */
 #ifndef SQLITE_OMIT_VIRTUALTABLE
 #include "sqliteInt.h"
@@ -596,6 +596,13 @@ int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab)
     }
     (void)sqlite3SafetyOn(db);
     if( rc==SQLITE_OK ){
+      int i;
+      for(i=0; i<db->nVTrans; i++){
+        if( db->aVTrans[i]==pTab->pVtab ){
+          db->aVTrans[i] = db->aVTrans[--db->nVTrans];
+          break;
+        }
+      }
       pTab->pVtab = 0;
     }
   }

test/vtabB.test

@@ -0,0 +1,38 @@
+# 2008 April 10
+#
+# 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 file is is verifying that a virtual table in the
+# TEMP database that is created and dropped within a transaction
+# is handled correctly.  Ticket #2994.
+
+#
+# $Id: vtabB.test,v 1.1 2008/04/10 18:35:22 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !vtab {
+  finish_test
+  return
+}
+
+do_test vtabB-1.1 {
+  register_echo_module [sqlite3_connection_pointer db]
+  execsql {
+    CREATE TABLE t1(x);
+    BEGIN;
+    CREATE VIRTUAL TABLE temp.echo_test1 USING echo(t1);
+    DROP TABLE echo_test1;
+    ROLLBACK;
+  }
+} {}
+
+finish_test