Fix some warnings when compiling under MSVC.

FossilOrigin-Name: 708338773919fa024abbba55180654beb60e6d84

manifest

@@ -1,5 +1,5 @@
-C Add\sinitializers\sfor\sthe\sxShmXXX()\smembers\sto\san\ssqlite3_io_methods\sstructure\sin\sjournal.c.\sThis\sdoesn't\sfix\sany\sreal\sproblem,\sjust\sprevents\sa\scompiler\swarning.
-D 2010-07-02T16:36:18
+C Fix\ssome\swarnings\swhen\scompiling\sunder\sMSVC.
+D 2010-07-02T17:05:03
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in a5cad1f8f3e021356bfcc6c77dc16f6f1952bbc3
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -113,7 +113,7 @@ F src/auth.c 523da7fb4979469955d822ff9298352d6b31de34
 F src/backup.c 51d83300fe0baee39405c416ceb19a58ed30a8ed
 F src/bitvec.c 06ad2c36a9c3819c0b9cbffec7b15f58d5d834e0
 F src/btmutex.c 96a12f50f7a17475155971a241d85ec5171573ff
-F src/btree.c ac51d077487df990de502cd0649e486a1a6cc458
+F src/btree.c c34267e8807ca89aefe3366b5c01656c8480c9b0
 F src/btree.h dd83041eda10c17daf023257c1fc883b5f71f85a
 F src/btreeInt.h b0c87f6725b06a0aa194a6d25d54b16ce9d6e291
 F src/build.c 31830208adbd6f97bef2517531ed70954a306fde
@@ -155,8 +155,8 @@ F src/os.h d7775504a51e6e0d40315aa427b3e229ff9ff9ca
 F src/os_common.h a8f95b81eca8a1ab8593d23e94f8a35f35d4078f
 F src/os_os2.c 665876d5eec7585226b0a1cf5e18098de2b2da19
 F src/os_unix.c ec7c7f7ca224ce2ff58736eebf804b48a75f9946
-F src/os_win.c 48f67798969ba983487fed5691059ade7fff2ef7
-F src/pager.c 95068d8b0f8a161ea364aa41af85d220a1be23df
+F src/os_win.c e82ed9e1c1d5df0ece234fd3157c32d66bb2c83c
+F src/pager.c fbb76339f0b999493005be976c9efb74f3fecd21
 F src/pager.h 879fdde5a102d2f21a3135d6f647530b21c2796c
 F src/parse.y ace5c7a125d9f2a410e431ee3209034105045f7e
 F src/pcache.c 1e9aa2dbc0845b52e1b51cc39753b6d1e041cb07
@@ -226,10 +226,10 @@ F src/vdbeblob.c 258a6010ba7a82b72b327fb24c55790655689256
 F src/vdbemem.c 5e579abf6532001dfbee0e640dc34eae897a9807
 F src/vdbetrace.c 864cef96919323482ebd9986f2132435115e9cc2
 F src/vtab.c a0f8a40274e4261696ef57aa806de2776ab72cda
-F src/wal.c 7666c113e99fb510ecd3043490798cec5a771e73
+F src/wal.c a56876d405a38a88bb4db9bc4dffcfab67eff645
 F src/wal.h 906c85760598b18584921fe08008435aa4eeeeb2
 F src/walker.c 3112bb3afe1d85dc52317cb1d752055e9a781f8f
-F src/where.c 1c895bef33d0dfc7ed90fb1f74120435d210ea56
+F src/where.c 9c642e4f74605039a6881d671e23471e6805322c
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
 F test/alias.test 4529fbc152f190268a15f9384a5651bbbabc9d87
 F test/all.test 6745008c144bd2956d58864d21f7b304689c1cce
@@ -830,7 +830,7 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
 F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
-P 01c1278263fdd8454763be15bddd2558e720e6e0
-R f945708978bd6e2d6ef2b7036668ceb3
-U dan
-Z 365ea1ba861987a397d4382540eb2770
+P dafb3577a2d5fbeebb17c8176af837f0aebf6ee5
+R c7042942897427538823f82925732f7f
+U shaneh
+Z 4db98fec7305cfa9b94972f0b6bf3352

manifest.uuid

@@ -1 +1 @@
-dafb3577a2d5fbeebb17c8176af837f0aebf6ee5
+708338773919fa024abbba55180654beb60e6d84

src/btree.c

@@ -2525,7 +2525,7 @@ int sqlite3BtreeBeginTrans(Btree *p, int wrflag){
   rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK);
   if( SQLITE_OK!=rc ) goto trans_begun;
 
-  pBt->initiallyEmpty = pBt->nPage==0;
+  pBt->initiallyEmpty = (u8)(pBt->nPage==0);
   do {
     /* Call lockBtree() until either pBt->pPage1 is populated or
     ** lockBtree() returns something other than SQLITE_OK. lockBtree()
@@ -8013,7 +8013,7 @@ int sqlite3BtreeSetVersion(Btree *pBtree, int iVersion){
   /* If setting the version fields to 1, do not automatically open the
   ** WAL connection, even if the version fields are currently set to 2.
   */
-  pBt->doNotUseWAL = (iVersion==1);
+  pBt->doNotUseWAL = (u8)(iVersion==1);
 
   rc = sqlite3BtreeBeginTrans(pBtree, 0);
   if( rc==SQLITE_OK ){

src/os_win.c

@@ -1657,6 +1657,7 @@ static int winShmLock(
 static void winShmBarrier(
   sqlite3_file *fd          /* Database holding the shared memory */
 ){
+  UNUSED_PARAMETER(fd);
   /* MemoryBarrier(); // does not work -- do not know why not */
   winShmEnterMutex();
   winShmLeaveMutex();

src/wal.c

@@ -737,7 +737,7 @@ static int walLockShared(Wal *pWal, int lockIdx){
                         SQLITE_SHM_LOCK | SQLITE_SHM_SHARED);
   WALTRACE(("WAL%p: acquire SHARED-%s %s\n", pWal,
             walLockName(lockIdx), rc ? "failed" : "ok"));
-  VVA_ONLY( pWal->lockError = (rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
+  VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
   return rc;
 }
 static void walUnlockShared(Wal *pWal, int lockIdx){
@@ -753,7 +753,7 @@ static int walLockExclusive(Wal *pWal, int lockIdx, int n){
                         SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE);
   WALTRACE(("WAL%p: acquire EXCLUSIVE-%s cnt=%d %s\n", pWal,
             walLockName(lockIdx), n, rc ? "failed" : "ok"));
-  VVA_ONLY( pWal->lockError = (rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
+  VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
   return rc;
 }
 static void walUnlockExclusive(Wal *pWal, int lockIdx, int n){
@@ -901,7 +901,7 @@ static void walCleanupHash(Wal *pWal){
   /* Zero the entries in the aPgno array that correspond to frames with
   ** frame numbers greater than pWal->hdr.mxFrame. 
   */
-  nByte = ((char *)aHash - (char *)&aPgno[iLimit+1]);
+  nByte = (int)((char *)aHash - (char *)&aPgno[iLimit+1]);
   memset((void *)&aPgno[iLimit+1], 0, nByte);
 
 #ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
@@ -949,7 +949,7 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){
     ** entire hash table and aPgno[] array before proceding. 
     */
     if( idx==1 ){
-      int nByte = (u8 *)&aHash[HASHTABLE_NSLOT] - (u8 *)&aPgno[1];
+      int nByte = (int)((u8 *)&aHash[HASHTABLE_NSLOT] - (u8 *)&aPgno[1]);
       memset((void*)&aPgno[1], 0, nByte);
     }
 
@@ -969,7 +969,7 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){
       assert( nCollide++ < idx );
     }
     aPgno[idx] = iPage;
-    aHash[iKey] = idx;
+    aHash[iKey] = (ht_slot)idx;
 
 #ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
     /* Verify that the number of entries in the hash table exactly equals
@@ -1077,8 +1077,8 @@ static int walIndexRecover(Wal *pWal){
     ){
       goto finished;
     }
-    pWal->hdr.bigEndCksum = (magic&0x00000001);
-    pWal->szPage = szPage;
+    pWal->hdr.bigEndCksum = (u8)(magic&0x00000001);
+    pWal->szPage = (u16)szPage;
     pWal->nCkpt = sqlite3Get4byte(&aBuf[12]);
     memcpy(&pWal->hdr.aSalt, &aBuf[16], 8);
 
@@ -1128,7 +1128,7 @@ static int walIndexRecover(Wal *pWal){
       if( nTruncate ){
         pWal->hdr.mxFrame = iFrame;
         pWal->hdr.nPage = nTruncate;
-        pWal->hdr.szPage = szPage;
+        pWal->hdr.szPage = (u16)szPage;
         aFrameCksum[0] = pWal->hdr.aFrameCksum[0];
         aFrameCksum[1] = pWal->hdr.aFrameCksum[1];
       }
@@ -1456,12 +1456,12 @@ static int walIteratorInit(Wal *pWal, WalIterator **pp){
       ht_slot *aIndex;            /* Sorted index for this segment */
 
       aPgno++;
-      nEntry = ((i+1)==nSegment)?(int)(iLast-iZero):(u32 *)aHash-(u32 *)aPgno;
+      nEntry = (int)(((i+1)==nSegment)?(int)(iLast-iZero):(u32 *)aHash-(u32 *)aPgno);
       aIndex = &((ht_slot *)&p->aSegment[p->nSegment])[iZero];
       iZero++;
   
       for(j=0; j<nEntry; j++){
-        aIndex[j] = j;
+        aIndex[j] = (ht_slot)j;
       }
       walMergesort((u32 *)aPgno, aTmp, aIndex, &nEntry);
       p->aSegment[i].iZero = iZero;
@@ -1984,7 +1984,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
       return WAL_RETRY;
     }else{
       assert( mxReadMark<=pWal->hdr.mxFrame );
-      pWal->readLock = mxI;
+      pWal->readLock = (i16)mxI;
     }
   }
   return rc;
@@ -2397,7 +2397,7 @@ int sqlite3WalFrames(
     sqlite3Put4byte(&aWalHdr[24], aCksum[0]);
     sqlite3Put4byte(&aWalHdr[28], aCksum[1]);
     
-    pWal->szPage = szPage;
+    pWal->szPage = (u16)szPage;
     pWal->hdr.bigEndCksum = SQLITE_BIGENDIAN;
     pWal->hdr.aFrameCksum[0] = aCksum[0];
     pWal->hdr.aFrameCksum[1] = aCksum[1];
@@ -2491,7 +2491,7 @@ int sqlite3WalFrames(
 
   if( rc==SQLITE_OK ){
     /* Update the private copy of the header. */
-    pWal->hdr.szPage = szPage;
+    pWal->hdr.szPage = (u16)szPage;
     pWal->hdr.mxFrame = iFrame;
     if( isCommit ){
       pWal->hdr.iChange++;

src/where.c

@@ -1841,7 +1841,7 @@ static void constructAutomaticIndex(
       }
     }
   }
-  assert( n==pLevel->plan.nEq );
+  assert( (u32)n==pLevel->plan.nEq );
 
   /* Add additional columns needed to make the automatic index into
   ** a covering index */