Fix a few harmless compiler warnings. Add SQLITE_ENABLE_STAT3 to the

standard compiler warning script.

FossilOrigin-Name: 3d68f9afee02f95103eb1682b8f2362f8d249437

manifest

@@ -1,5 +1,5 @@
-C Allow\sthe\ssqlite3VdbeJumpHere()\sroutine\sto\saccept\sa\snegative\sor\szero\saddress\nif\sa\sprior\smemory\sallocation\serror\shas\soccurred.\s\sThe\snew\ssqlite_stat3\slogic\nneeds\sthis.
-D 2011-08-16T02:07:04.573
+C Fix\sa\sfew\sharmless\scompiler\swarnings.\s\sAdd\sSQLITE_ENABLE_STAT3\sto\sthe\nstandard\scompiler\swarning\sscript.
+D 2011-08-16T17:06:21.985
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 1e6988b3c11dee9bd5edc0c804bd4468d74a9cdc
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -118,7 +118,7 @@ F sqlite.pc.in 42b7bf0d02e08b9e77734a47798d1a55a9e0716b
 F sqlite3.1 6be1ad09113570e1fc8dcaff84c9b0b337db5ffc
 F sqlite3.pc.in ae6f59a76e862f5c561eb32a380228a02afc3cad
 F src/alter.c ac80a0f31189f8b4a524ebf661e47e84536ee7f5
-F src/analyze.c 8a41063db56d2fe4735a1ae4dd556b37df1702e1
+F src/analyze.c f436b0f53be47fbc03c661ec7c2b4c5fec14077e
 F src/attach.c 12c6957996908edc31c96d7c68d4942c2474405f
 F src/auth.c 523da7fb4979469955d822ff9298352d6b31de34
 F src/backup.c 986c15232757f2873dff35ee3b35cbf935fc573c
@@ -250,7 +250,7 @@ F src/vtab.c 901791a47318c0562cd0c676a2c6ff1bc530e582
 F src/wal.c 3154756177d6219e233d84291d5b05f4e06ff5e9
 F src/wal.h 66b40bd91bc29a5be1c88ddd1f5ade8f3f48728a
 F src/walker.c 3112bb3afe1d85dc52317cb1d752055e9a781f8f
-F src/where.c 118896232fe70b1ac9c2ef2811675d5bef8b9c40
+F src/where.c 3d9a78a422726c1b3a57188c3099e537cb18e18a
 F test/8_3_names.test 631ea964a3edb091cf73c3b540f6bcfdb36ce823
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
 F test/alias.test 4529fbc152f190268a15f9384a5651bbbabc9d87
@@ -958,8 +958,8 @@ F tool/split-sqlite3c.tcl d9be87f1c340285a3e081eb19b4a247981ed290c
 F tool/symbols.sh caaf6ccc7300fd43353318b44524853e222557d5
 F tool/tostr.awk 11760e1b94a5d3dcd42378f3cc18544c06cfa576
 F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
-F tool/warnings.sh 2ebae31e1eb352696f3c2f7706a34c084b28c262
-P 2c83ac89dc5a6017587defb541c9f3731b98892a
-R 1450328cb5bbd53defdba59501aa7ba3
+F tool/warnings.sh 682b359e1531c8d4c805e2c1b5656b2d76e481e3
+P 9650d7962804d61f56cac944ff9bb2c7bc111957
+R f1db5c89fee04ee43fcb815b658cde4c
 U drh
-Z d5f58e0bf7dc218c29e54b5a642cee65
+Z 935e4c47860333dc9df37a80ab259764

manifest.uuid

@@ -1 +1 @@
-9650d7962804d61f56cac944ff9bb2c7bc111957
+3d68f9afee02f95103eb1682b8f2362f8d249437

src/analyze.c

@@ -254,6 +254,7 @@ static void stat3Init(
   int mxSample;
   int n;
 
+  UNUSED_PARAMETER(argc);
   nRow = (tRowcnt)sqlite3_value_int64(argv[0]);
   mxSample = sqlite3_value_int(argv[1]);
   n = sizeof(*p) + sizeof(p->a[0])*mxSample;
@@ -309,8 +310,10 @@ static void stat3Push(
   struct Stat3Sample *pSample;
   int i;
   u32 h;
-  if( nEq==0 ) return;
 
+  UNUSED_PARAMETER(context);
+  UNUSED_PARAMETER(argc);
+  if( nEq==0 ) return;
   h = p->iPrn = p->iPrn*1103515245 + 12345;
   if( (nLt/p->nPSample)!=((nEq+nLt)/p->nPSample) ){
     doInsert = isPSample = 1;
@@ -497,7 +500,7 @@ static void analyzeOneTable(
   for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
     int nCol;
     KeyInfo *pKey;
-    int addrIfNot;               /* address of OP_IfNot */
+    int addrIfNot = 0;           /* address of OP_IfNot */
     int *aChngAddr;              /* Array of jump instruction addresses */
 
     if( pOnlyIdx && pOnlyIdx!=pIdx ) continue;
@@ -907,6 +910,7 @@ void sqlite3DeleteIndexSamples(sqlite3 *db, Index *pIdx){
     }
     sqlite3_free(pIdx->aSample);
   }
+  UNUSED_PARAMETER(db);
   pIdx->nSample = 0;
   pIdx->aSample = 0;
 #else
@@ -925,7 +929,7 @@ static int loadStat3(sqlite3 *db, const char *zDb){
   sqlite3_stmt *pStmt = 0;      /* An SQL statement being run */
   char *zSql;                   /* Text of the SQL statement */
   Index *pPrevIdx = 0;          /* Previous index in the loop */
-  int idx;                      /* slot in pIdx->aSample[] for next sample */
+  int idx = 0;                  /* slot in pIdx->aSample[] for next sample */
   int eType;                    /* Datatype of a sample */
   IndexSample *pSample;         /* A slot in pIdx->aSample[] */
 

src/where.c

@@ -2499,7 +2499,6 @@ static int whereKeyStats(
       sqlite3 *db = pParse->db;
       CollSeq *pColl;
       const u8 *z;
-      int n;
       if( eType==SQLITE_BLOB ){
         z = (const u8 *)sqlite3_value_blob(pVal);
         pColl = db->pDfltColl;
@@ -2798,7 +2797,7 @@ static int whereInScanEst(
 ){
   int rc = SQLITE_OK;         /* Subfunction return code */
   double nEst;                /* Number of rows for a single term */
-  double nRowEst;           /* New estimate of the number of rows */
+  double nRowEst = (double)0; /* New estimate of the number of rows */
   int i;                      /* Loop counter */
 
   assert( p->aSample!=0 );

tool/warnings.sh

@@ -8,9 +8,9 @@ echo '********** No optimizations.  Includes FTS4 and RTREE *********'
 gcc -c -Wshadow -Wall -Wextra -pedantic-errors -Wno-long-long -std=c89 \
       -ansi -DHAVE_STDINT_H -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_RTREE \
       sqlite3.c
-echo '********** No optimizations. ENABLE_STAT2. THREADSAFE=0 *******'
+echo '********** No optimizations. ENABLE_STAT3. THREADSAFE=0 *******'
 gcc -c -Wshadow -Wall -Wextra -pedantic-errors -Wno-long-long -std=c89 \
-      -ansi -DSQLITE_ENABLE_STAT2 -DSQLITE_THREADSAFE=0 \
+      -ansi -DSQLITE_ENABLE_STAT3 -DSQLITE_THREADSAFE=0 \
       sqlite3.c
 echo '********** Optimized -O3.  Includes FTS4 and RTREE ************'
 gcc -O3 -c -Wshadow -Wall -Wextra -pedantic-errors -Wno-long-long -std=c89 \