Fix harmless compiler warnings in the zonefile extension seen with MSVC.

FossilOrigin-Name: d28003941ceca7fb707fcdb09bf8b00a6c1b728956e018d7ecfb6852d7dd469b

Makefile.msc

@@ -1494,6 +1494,7 @@ TESTEXT = \
   $(TOP)\ext\misc\eval.c \
   $(TOP)\ext\misc\fileio.c \
   $(TOP)\ext\misc\fuzzer.c \
+  $(TOP)\ext\zonefile\zonefile.c \
   $(TOP)\ext\fts5\fts5_tcl.c \
   $(TOP)\ext\fts5\fts5_test_mi.c \
   $(TOP)\ext\fts5\fts5_test_tok.c \

ext/zonefile/zonefile.c

@@ -1002,11 +1002,11 @@ static void zonefileAppendBlob(ZonefileBuffer *pBuf, const u8 *p, int n){
 
 static int zonefileFileWrite(FILE *pFd, const u8 *aBuf, int nBuf){
   size_t res = fwrite(aBuf, 1, nBuf, pFd);
-  return res!=nBuf ? SQLITE_ERROR : SQLITE_OK;
+  return res!=(size_t)nBuf ? SQLITE_ERROR : SQLITE_OK;
 }
 
 static int zonefileFileRead(FILE *pFd, u8 *aBuf, int nBuf, i64 iOff){
-  int rc = fseek(pFd, iOff, SEEK_SET);
+  int rc = fseek(pFd, (long)iOff, SEEK_SET);
   if( rc==0 ){
     rc = fread(aBuf, 1, nBuf, pFd);
     rc = (rc==nBuf) ? SQLITE_OK : SQLITE_ERROR;
@@ -1076,7 +1076,7 @@ static int zonefilePad(FILE *pFd, int nByte){
   assert( nByte>=0 && nByte<256 );
   if( nByte ){
     int nRem = nByte;
-    u8 buf[16] = "0123456789ABCDEF";
+    u8 buf[17] = "0123456789ABCDEF";
     while( nRem>0 ){
       int n = MIN(nRem, sizeof(buf));
       if( zonefileFileWrite(pFd, buf, n) ) return SQLITE_ERROR;
@@ -1102,7 +1102,7 @@ static void zonefileWriteFunc(
   int nFrame = 0;                 /* Number of frames in new zonefile */
   sqlite3_stmt *pStmt = 0;        /* SQL used to read data from source table */
   FILE *pFd = 0;
-  int rc;
+  int rc = SQLITE_OK;
   sqlite3_value *pPrev = 0;
   char *zErr = 0;
   void *pCmp = 0;                 /* Data compressor handle */
@@ -1295,17 +1295,17 @@ static void zonefileWriteFunc(
   /* Create the zonefile header in the in-memory buffer */
   memset(aHdr, 0, ZONEFILE_SZ_HEADER);
   zonefilePut32(&aHdr[0], ZONEFILE_MAGIC_NUMBER);
-  aHdr[4] = sParam.pCmpIdx->eType;
-  aHdr[5] = sParam.pCmpData->eType;
+  aHdr[4] = (u8)sParam.pCmpIdx->eType;
+  aHdr[5] = (u8)sParam.pCmpData->eType;
   iOff = ZONEFILE_SZ_HEADER + sFrameIdx.n + sKeyIdx.n;
   zonefilePut32(&aHdr[6], sDict.n ? iOff+sParam.debugExtendedHeaderSize : 0);
   zonefilePut32(&aHdr[10], iOff + sParam.debugExtendedHeaderSize + sDict.n);
   zonefilePut32(&aHdr[14], nFrame);
   zonefilePut32(&aHdr[18], nKey);
-  aHdr[22] = sParam.encryptionType;
+  aHdr[22] = (u8)sParam.encryptionType;
   aHdr[23] = 0;                   /* Encryption key index */
   aHdr[24] = 0;                   /* extended header version */
-  aHdr[25] = sParam.debugExtendedHeaderSize;
+  aHdr[25] = (u8)sParam.debugExtendedHeaderSize;
   assert( ZONEFILE_SZ_HEADER>=26 );
 
   rc = zonefileFileWrite(pFd, aHdr, ZONEFILE_SZ_HEADER);
@@ -1554,7 +1554,7 @@ static void zonefileJsonHeader(sqlite3_context *pCtx, const char *zFile){
   FILE *pFd = zonefileFileOpen(zFile, 0, &zErr);
   if( pFd ){
     int rc;
-    ZonefileHeader hdr;
+    ZonefileHeader hdr = { 0 };
     u8 aBuf[ZONEFILE_SZ_HEADER];
 
     rc = zonefileFileRead(pFd, aBuf, ZONEFILE_SZ_HEADER, 0);
@@ -1767,7 +1767,7 @@ static int zonefilePopulateIndex(
   const char *zFile,
   i64 iFileid
 ){
-  ZonefileHeader hdr;
+  ZonefileHeader hdr = { 0 };
   int rc;
   FILE *pFd = zonefileFileOpen(zFile, 0, &pTab->base.zErrMsg);
 
@@ -1792,7 +1792,7 @@ static int zonefilePopulateIndex(
       );
     }
 
-    for(i=0; i<hdr.numKeys && rc==SQLITE_OK; i++){
+    for(i=0; (u32)i<hdr.numKeys && rc==SQLITE_OK; i++){
       u8 *aEntry = &aKey[4*hdr.numFrames + ZONEFILE_SZ_KEYOFFSETS_ENTRY * i];
       int iFrame = zonefileGet32(&aEntry[8]);
       i64 iFrameOff = 0;          /* Offset of frame */
@@ -1803,7 +1803,7 @@ static int zonefilePopulateIndex(
       szFrame = zonefileGet32(&aKey[iFrame*4]);
       if( iFrame>0 ){
         iFrameOff = zonefileGet32(&aKey[(iFrame-1)*4]);
-        szFrame -= iFrameOff;
+        szFrame -= (int)iFrameOff;
       }
       iFrameOff += hdr.byteOffsetFrames;
       iOff = (i64)zonefileGet32(&aEntry[12]);
@@ -2537,7 +2537,7 @@ static int zonefileValueReadCache(sqlite3_context *pCtx, ZonefileCsr *pCsr){
   i64 iFile = sqlite3_column_int64(pCsr->pSelect, 1);
   i64 iFrameOff = sqlite3_column_int64(pCsr->pSelect, 2);
   i64 iKeyOff = sqlite3_column_int64(pCsr->pSelect, 4);
-  int nKeySz = sqlite3_column_int64(pCsr->pSelect, 5);
+  int nKeySz = sqlite3_column_int(pCsr->pSelect, 5);
 
   /* Check if this frame is already in the cache. If not, read it from 
   ** the file.  */
@@ -2546,7 +2546,7 @@ static int zonefileValueReadCache(sqlite3_context *pCtx, ZonefileCsr *pCsr){
     const char *zFile = 0;
     char *zErr = 0;
     FILE *pFd = 0;
-    ZonefileHeader hdr;
+    ZonefileHeader hdr = { 0 };
     ZonefileCompress *pCmpMethod = 0;
     ZonefileCodec *pCodec = 0;
     void *pCmp = 0;

manifest

@@ -1,10 +1,10 @@
-C Avoid\srunning\sa\stest\scase\sthat\srequires\szstd\sin\snon-SQLITE_HAVE_ZSTD\sbuilds.
-D 2018-02-23T13:58:17.194
+C Fix\sharmless\scompiler\swarnings\sin\sthe\szonefile\sextension\sseen\swith\sMSVC.
+D 2018-02-23T14:00:38.536
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F Makefile.in a2d2fb8d17c39ab5ec52beb27850b903949080848236923f436156b72a958737
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
-F Makefile.msc bf19d3a0eb849bd3b114653b0e455aa5b2799a96f413287a5866013db0e47f30
+F Makefile.msc 738b130a37c8855f46c519cdeab968a483042017b8e90a04a8156e26d6a3769d
 F README.md 1d5342ebda97420f114283e604e5fe99b0da939d63b76d492eabbaae23488276
 F VERSION cdf91ac446255ecf3d8f6d8c3ee40d64123235ae5b3cef29d344e61b45ec3759
 F aclocal.m4 a5c22d164aff7ed549d53a90fa56d56955281f50
@@ -409,7 +409,7 @@ F ext/userauth/sqlite3userauth.h 7f3ea8c4686db8e40b0a0e7a8e0b00fac13aa7a3
 F ext/userauth/user-auth.txt e6641021a9210364665fe625d067617d03f27b04
 F ext/userauth/userauth.c 3410be31283abba70255d71fd24734e017a4497f
 F ext/zonefile/README.md df86ef5b4f9aa8b07e1c8124b3f2dcea616927385aad59d525b784f0a06d446c
-F ext/zonefile/zonefile.c f43dd41bd121ce8ab4f46ba3c8136e674df88ec2eb7ccc1c974e8e8b5aaa6e99
+F ext/zonefile/zonefile.c 4cab22c4b43499099f2ff3bdb0292f9bdf0dfd077948c4ed9a6479532011d2ae
 F ext/zonefile/zonefile1.test d80e8fd9db0b4b942628d00136ee448ce5b1b5e09f4b85a25aef500b888d62e9
 F ext/zonefile/zonefileenc.test f23e16fc8810c95588dfd528af8e4332f0d1d13370fdd7163226ec886715058e
 F ext/zonefile/zonefilefault.test 7f93ba8420d6f6a461d2fbbce30a04f744764f584c0c17361a867db8088f5595
@@ -1712,7 +1712,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 53f2100a296f64d206f1caf2d754820a7898bb33b31a6ab2169957d228d5d2a0
-R 0e212e0e9239ba8677898e0760493590
-U dan
-Z c33750ba5a66f2c197371c0a690fad0a
+P d716dff4441b4d28e0184ce06508bc9122451103ead8edbfbf3c87b666445ee6
+R 712509a970c46f53beac46f7a0038889
+U mistachkin
+Z 2cb656811a0799bf4622d31d9206483b

manifest.uuid

@@ -1 +1 @@
-d716dff4441b4d28e0184ce06508bc9122451103ead8edbfbf3c87b666445ee6
+d28003941ceca7fb707fcdb09bf8b00a6c1b728956e018d7ecfb6852d7dd469b