diff --git a/manifest b/manifest
index 84b351d95d..669b49e838 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\sharmless\scompiler\swarnings.\s(CVS\s5073)
-D 2008-05-01T17:03:49
+C Fix\smore\scompiler\swarnings.\s(CVS\s5074)
+D 2008-05-01T17:16:53
 F Makefile.arm-wince-mingw32ce-gcc ac5f7b2cef0cd850d6f755ba6ee4ab961b1fadf7
 F Makefile.in 25b3282a4ac39388632c2fb0e044ff494d490952
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -89,12 +89,12 @@ F src/btmutex.c 483ced3c52205b04b97df69161fadbf87f4f1ea2
 F src/btree.c 8b2294c64baeee6ae0519e1438c577fd601c02fb
 F src/btree.h 8826591bf54dd35fcf2e67473d5f1bae253861c7
 F src/btreeInt.h dc04ee33d8eb84714b2acdf81336fbbf6e764530
-F src/build.c 2cde01caed5abaec38f579fabe343d89eb2907f7
+F src/build.c a52d9d51341444a2131e3431608f245db80d9591
 F src/callback.c 77b302b0d41468dcda78c70e706e5b84577f0fa0
 F src/complete.c 4cf68fd75d60257524cbe74f87351b9848399131
 F src/date.c e41ce4513fb0e359dc678d6bddb4ace135fe365d
 F src/delete.c d3fc5987f2eb88f7b9549d58a5dfea079a83fe8b
-F src/expr.c a896d1be67b2abe9759369cb7f3a3b7a1c21fc3f
+F src/expr.c 89f192b22b8c06b61d9b944cb59f42370d80e362
 F src/fault.c 83057e86815d473e526f7df0b0108dfdd022ff23
 F src/func.c 77a910a1ca7613d291fd0b5cba3be14c02f0dce0
 F src/hash.c 522a8f5a23cf18fe5845afee7263c5be76c25ca2
@@ -122,7 +122,7 @@ F src/os_common.h e8b748b2f2ecc8a498e50bfe5d8721f189c19d2a
 F src/os_os2.c 41015b3fa91568761eb10cbf6ca27a0624ba0bda
 F src/os_unix.c 8cf512c4321c3114f053dc9eaae394db2dc03ebe
 F src/os_win.c 3a60bddd07ea6f8adb2314dd5996ac97b988f403
-F src/pager.c fd4e176cbd9dbf09d59406b8346e2c00eeda2999
+F src/pager.c 2d495e9a439e7f5db12f02cd8efe6ae417bff26a
 F src/pager.h 4f051fd856de6fd3c19aef5f82eace54122b9173
 F src/parse.y fc4bd35c6088901f7c8daead26c6fb11c87d22e7
 F src/pragma.c 2e4bb2e76e48a32750529fdc4bfe86ac5f54e01b
@@ -137,7 +137,7 @@ F src/sqlite3ext.h faacd0e6a81aabee0861c6d7883c9172e74ef5b3
 F src/sqliteInt.h 6dbffa746c569b992e76051565d3531a07a54669
 F src/sqliteLimit.h f435e728c6b620ef7312814d660a81f9356eb5c8
 F src/table.c 46ccf9b7892a86f57420ae7bac69ecd5e72d26b5
-F src/tclsqlite.c 2877726bf32f7d72ff057b37ed6c93485b667ea1
+F src/tclsqlite.c c57e740e30bd6dda678796eed62c7f0e64689834
 F src/test1.c caf46aac174a51be7077110dea8a05a5563b85d1
 F src/test2.c f0808cc643528b9620e4059ca9bda8346f526121
 F src/test3.c f5328839e29631ed9eef8674994ad7341b2de59b
@@ -159,7 +159,7 @@ F src/test_malloc.c c92a65e8f9b31bb2b332448d92d2016c000a963d
 F src/test_md5.c bca40b727c57462ddb415e57c5323445a1bb1a40
 F src/test_onefile.c 2fea6d22f13f5f286356c80c77ffd41f995f2b7a
 F src/test_osinst.c 7129ca5f91e655020539b4e628cb578dd30ac5c7
-F src/test_schema.c 12c9de7661d6294eec2d57afbb52e2af1128084f
+F src/test_schema.c e3f93725f7c5b2cff84a69dc4332040dfbc8f81a
 F src/test_server.c a6ece6c835e7eae835054124e09e947e422b1ac5
 F src/test_tclvar.c b2d1115e4d489179d3f029e765211b2ad527ba59
 F src/test_thread.c e297dd41db0b249646e69f97d36ec13e56e8b730
@@ -172,7 +172,7 @@ F src/vacuum.c c3b2b70677f874102b8753bf494c232e777f3998
 F src/vdbe.c 26964ba7ed76d2a1c52747d601aaf2dc5b09b651
 F src/vdbe.h f4bb70962d9c13e0f65b215c90e8acea1ae6e8ee
 F src/vdbeInt.h 18aebaa7857de4507d92ced62d8fe0844671a681
-F src/vdbeapi.c 0e1b5a808bb0e556f2a975eb7d11fd3153e922bf
+F src/vdbeapi.c c810f936b09a1cfcac6b3624ad237b7951ca1880
 F src/vdbeaux.c aae523de91fb72a32a256253880739fe103ea76e
 F src/vdbeblob.c 554736781ee273a8089c776e96bdb53e66f57ce6
 F src/vdbefifo.c a30c237b2a3577e1415fb6e288cbb6b8ed1e5736
@@ -633,7 +633,7 @@ F www/tclsqlite.tcl 8be95ee6dba05eabcd27a9d91331c803f2ce2130
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
-P 682dc24dbe82d0326377e27c5ff97db3499873b0
-R 2a1e4afac9472a5800a38d1bea7bd744
+P 227a6f67c21c87a7cf98f84b9d57a6dc9da93ebb
+R 6c9957669f2cdfef69a7c4eb23ccdec1
 U drh
-Z a7fa05d78dd2cc528c84b78b850c9e17
+Z 1e991c3831da5b5ff3ab383f3c915b8e
diff --git a/manifest.uuid b/manifest.uuid
index 2ce255a67d..273e9634e1 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-227a6f67c21c87a7cf98f84b9d57a6dc9da93ebb
\ No newline at end of file
+59568844e774dbe89fd20bbc8f49a3665cc54717
\ No newline at end of file
diff --git a/src/build.c b/src/build.c
index 91f7057f10..c1b5a45304 100644
--- a/src/build.c
+++ b/src/build.c
@@ -22,7 +22,7 @@
 **     COMMIT
 **     ROLLBACK
 **
-** $Id: build.c,v 1.483 2008/04/28 18:46:43 drh Exp $
+** $Id: build.c,v 1.484 2008/05/01 17:16:53 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -159,7 +159,7 @@ void sqlite3FinishCoding(Parse *pParse){
     */
     if( pParse->cookieGoto>0 ){
       u32 mask;
-      int iDb, i;
+      int iDb;
       sqlite3VdbeJumpHere(v, pParse->cookieGoto-1);
       for(iDb=0, mask=1; iDb<db->nDb; mask<<=1, iDb++){
         if( (mask & pParse->cookieMask)==0 ) continue;
@@ -168,11 +168,14 @@ void sqlite3FinishCoding(Parse *pParse){
         sqlite3VdbeAddOp2(v,OP_VerifyCookie, iDb, pParse->cookieValue[iDb]);
       }
 #ifndef SQLITE_OMIT_VIRTUALTABLE
-      for(i=0; i<pParse->nVtabLock; i++){
-        char *vtab = (char *)pParse->apVtabLock[i]->pVtab;
-        sqlite3VdbeAddOp4(v, OP_VBegin, 0, 0, 0, vtab, P4_VTAB);
+      {
+        int i;
+        for(i=0; i<pParse->nVtabLock; i++){
+          char *vtab = (char *)pParse->apVtabLock[i]->pVtab;
+          sqlite3VdbeAddOp4(v, OP_VBegin, 0, 0, 0, vtab, P4_VTAB);
+        }
+        pParse->nVtabLock = 0;
       }
-      pParse->nVtabLock = 0;
 #endif
 
       /* Once all the cookies have been verified and transactions opened, 
diff --git a/src/expr.c b/src/expr.c
index e0c5ecfbcb..bc5f0eab17 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -12,7 +12,7 @@
 ** This file contains routines used for analyzing expressions and
 ** for generating VDBE code that evaluates expressions in SQLite.
 **
-** $Id: expr.c,v 1.370 2008/04/29 00:15:21 drh Exp $
+** $Id: expr.c,v 1.371 2008/05/01 17:16:53 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -266,8 +266,7 @@ Expr *sqlite3Expr(
   const Token *pToken     /* Argument token */
 ){
   Expr *pNew;
-  static const Expr zeroExpr;
-  pNew = sqlite3DbMallocRaw(db, sizeof(Expr));
+  pNew = sqlite3DbMallocZero(db, sizeof(Expr));
   if( pNew==0 ){
     /* When malloc fails, delete pLeft and pRight. Expressions passed to 
     ** this function must always be allocated with sqlite3Expr() for this 
@@ -277,7 +276,6 @@ Expr *sqlite3Expr(
     sqlite3ExprDelete(pRight);
     return 0;
   }
-  *pNew = zeroExpr;
   pNew->op = op;
   pNew->pLeft = pLeft;
   pNew->pRight = pRight;
diff --git a/src/pager.c b/src/pager.c
index 89d6140e6f..fadcf29dc9 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -18,7 +18,7 @@
 ** file simultaneously, or one process from reading the database while
 ** another is writing.
 **
-** @(#) $Id: pager.c,v 1.437 2008/05/01 17:03:49 drh Exp $
+** @(#) $Id: pager.c,v 1.438 2008/05/01 17:16:53 drh Exp $
 */
 #ifndef SQLITE_OMIT_DISKIO
 #include "sqliteInt.h"
@@ -516,7 +516,9 @@ static const unsigned char aJournalMagic[] = {
     p->iInUseDB++;
     if( p->iInUseMM && p->iInUseDB==1 ){
       sqlite3_mutex *mutex;
+#ifndef SQLITE_MUTEX_NOOP
       mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MEM2);
+#endif
       p->iInUseDB = 0;
       sqlite3_mutex_enter(mutex);
       p->iInUseDB = 1;
@@ -2324,7 +2326,9 @@ int sqlite3PagerOpen(
   pPager->iInUseMM = 0;
   pPager->iInUseDB = 0;
   if( !memDb ){
+#ifndef SQLITE_MUTEX_NOOP
     sqlite3_mutex *mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MEM2);
+#endif
     sqlite3_mutex_enter(mutex);
     pPager->pNext = sqlite3PagerList;
     if( sqlite3PagerList ){
@@ -2706,7 +2710,9 @@ int sqlite3PagerTruncate(Pager *pPager, Pgno nPage){
 int sqlite3PagerClose(Pager *pPager){
 #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
   if( !MEMDB ){
+#ifndef SQLITE_MUTEX_NOOP
     sqlite3_mutex *mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MEM2);
+#endif
     sqlite3_mutex_enter(mutex);
     if( pPager->pPrev ){
       pPager->pPrev->pNext = pPager->pNext;
@@ -3223,7 +3229,9 @@ int sqlite3PagerReleaseMemory(int nReq){
 
   /* Acquire the memory-management mutex
   */
+#ifndef SQLITE_MUTEX_NOOP
   mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MEM2);
+#endif
   sqlite3_mutex_enter(mutex);
 
   /* Signal all database connections that memory management wants
diff --git a/src/tclsqlite.c b/src/tclsqlite.c
index 4818d898f2..0fd4602e3e 100644
--- a/src/tclsqlite.c
+++ b/src/tclsqlite.c
@@ -12,7 +12,7 @@
 ** A TCL Interface to SQLite.  Append this file to sqlite3.c and
 ** compile the whole thing to build a TCL-enabled version of SQLite.
 **
-** $Id: tclsqlite.c,v 1.216 2008/04/16 00:28:14 drh Exp $
+** $Id: tclsqlite.c,v 1.217 2008/05/01 17:16:53 drh Exp $
 */
 #include "tcl.h"
 #include <errno.h>
@@ -479,6 +479,7 @@ static int DbBusyHandler(void *cd, int nTries){
   return 1;
 }
 
+#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
 /*
 ** This routine is invoked as the 'progress callback' for the database.
 */
@@ -493,6 +494,7 @@ static int DbProgressHandler(void *cd){
   }
   return 0;
 }
+#endif
 
 #ifndef SQLITE_OMIT_TRACE
 /*
diff --git a/src/test_schema.c b/src/test_schema.c
index 8800520155..536af86a0c 100644
--- a/src/test_schema.c
+++ b/src/test_schema.c
@@ -13,7 +13,7 @@
 ** is not included in the SQLite library.  It is used for automated
 ** testing of the SQLite library.
 **
-** $Id: test_schema.c,v 1.13 2007/08/16 04:30:40 drh Exp $
+** $Id: test_schema.c,v 1.14 2008/05/01 17:16:53 drh Exp $
 */
 
 /* The code in this file defines a sqlite3 virtual-table module that
@@ -66,6 +66,11 @@ struct schema_cursor {
   int rowid;
 };
 
+/*
+** None of this works unless we have virtual tables.
+*/
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+
 /*
 ** Table destructor for the schema module.
 */
@@ -287,6 +292,7 @@ static sqlite3_module schemaModule = {
   0,                           /* xRename */
 };
 
+#endif /* !defined(SQLITE_OMIT_VIRTUALTABLE) */
 
 #ifdef SQLITE_TEST
 
diff --git a/src/vdbeapi.c b/src/vdbeapi.c
index fdb585acf6..6e90084517 100644
--- a/src/vdbeapi.c
+++ b/src/vdbeapi.c
@@ -47,6 +47,7 @@ static struct StatementLruList sqlite3LruStatements;
 **
 **   assert( stmtLruCheck() );
 */
+#ifndef NDEBUG
 static int stmtLruCheck(){
   Vdbe *p;
   for(p=sqlite3LruStatements.pFirst; p; p=p->pLruNext){
@@ -57,6 +58,7 @@ static int stmtLruCheck(){
   }
   return 1;
 }
+#endif
 
 /*
 ** Add vdbe p to the end of the statement lru list. It is assumed that