From fefa094921b2183e6fad8c70ecf261fb98590694 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Wed, 5 Nov 2014 21:21:08 +0000
Subject: [PATCH] Fix harmless compiler warnings in the new balance_nonroot()
 routine.

FossilOrigin-Name: 83a1e5db926b3a6d40f4a5cf9a8e6852b9bac9ac
---
 manifest      | 12 ++++++------
 manifest.uuid |  2 +-
 src/btree.c   | 19 ++++++++++++-------
 3 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/manifest b/manifest
index d1dcbe649d..6994d5e8ec 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Change\sthe\squery\splanner\sto\sdo\sa\sbetter\sjob\sof\sestimating\sthe\snumber\srows\nselected\sby\sa\sBETWEEN\soperator\susing\sSTAT4\swhen\sboth\supper\sand\slower\sbounds\nare\scontained\swithin\sthe\ssame\ssample.
-D 2014-11-05T19:26:12.741
+C Fix\sharmless\scompiler\swarnings\sin\sthe\snew\sbalance_nonroot()\sroutine.
+D 2014-11-05T21:21:08.046
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in cf57f673d77606ab0f2d9627ca52a9ba1464146a
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -172,7 +172,7 @@ F src/auth.c b56c78ebe40a2110fd361379f7e8162d23f92240
 F src/backup.c 7f841396adfd47507ff670a471162d2bfcda3136
 F src/bitvec.c 19a4ba637bd85f8f63fc8c9bae5ade9fb05ec1cb
 F src/btmutex.c 49ca66250c7dfa844a4d4cb8272b87420d27d3a5
-F src/btree.c 11d1262110c2d459b68121833fa3ec6625b1d022
+F src/btree.c 4a126e2066076872ab6f37f9ad116eb5f651cd38
 F src/btree.h 49b408be9c1cd41249076898e0673711071205d8
 F src/btreeInt.h 026d0129724e8f265fdc60d44ec240cf5a4e6179
 F src/build.c 67bb05b1077e0cdaccb2e36bfcbe7a5df9ed31e8
@@ -1211,7 +1211,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 42705fd7d892c4fdfb95fbbb468c99569beece25
-R b31ea7cd782cb3cc21bda8e8c039f16c
+P 2d36be5d9a1cdd4fd2d54fc4eeece32a81cbacc1
+R e9a3ba77188e96b62213debbd39f0d21
 U drh
-Z 7c6a788d1b7b1ae57295ef90b3d9da88
+Z dda139af7d076df31a05d3458397d7d6
diff --git a/manifest.uuid b/manifest.uuid
index 64b0a08a4b..82de0553f1 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-2d36be5d9a1cdd4fd2d54fc4eeece32a81cbacc1
\ No newline at end of file
+83a1e5db926b3a6d40f4a5cf9a8e6852b9bac9ac
\ No newline at end of file
diff --git a/src/btree.c b/src/btree.c
index fe15c922ca..8b4a2a4f3b 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -1297,8 +1297,8 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){
   const int hdr = pPage->hdrOffset;    /* Local cache of pPage->hdrOffset */
   u8 * const data = pPage->aData;      /* Local cache of pPage->aData */
   int top;                             /* First byte of cell content area */
+  int rc = SQLITE_OK;                  /* Integer return code */
   int gap;        /* First byte of gap between cell pointers and cell content */
-  int rc;         /* Integer return code */
   
   assert( sqlite3PagerIswriteable(pPage->pDbPage) );
   assert( pPage->pBt );
@@ -1328,13 +1328,13 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){
   testcase( gap+1==top );
   testcase( gap==top );
   if( gap+2<=top && (data[hdr+1] || data[hdr+2]) ){
-    int rc = SQLITE_OK;
     int bDefrag = 0;
     u8 *pSpace = pageFindSlot(pPage, nByte, &rc, &bDefrag);
     if( rc ) return rc;
     if( bDefrag ) goto defragment_page;
     if( pSpace ){
-      *pIdx = pSpace - data;
+      assert( pSpace>=data && (pSpace - data)<65536 );
+      *pIdx = (int)(pSpace - data);
       return SQLITE_OK;
     }
   }
@@ -6117,7 +6117,10 @@ static int pageFreeArray(
     if( pCell>=pStart && pCell<pEnd ){
       int sz = szCell[i];
       if( pFree!=(pCell + sz) ){
-        if( pFree ) freeSpace(pPg, pFree - aData, szFree);
+        if( pFree ){
+          assert( pFree>aData && (pFree - aData)<65536 );
+          freeSpace(pPg, (u16)(pFree - aData), szFree);
+        }
         pFree = pCell;
         szFree = sz;
         if( pFree+sz>pEnd ) return 0;
@@ -6128,7 +6131,10 @@ static int pageFreeArray(
       nRet++;
     }
   }
-  if( pFree ) freeSpace(pPg, pFree - aData, szFree);
+  if( pFree ){
+    assert( pFree>aData && (pFree - aData)<65536 );
+    freeSpace(pPg, (u16)(pFree - aData), szFree);
+  }
   return nRet;
 }
 
@@ -6192,7 +6198,7 @@ static void editPage(
   for(i=0; i<pPg->nOverflow; i++){
     int iCell = (iOld + pPg->aiOvfl[i]) - iNew;
     if( iCell>=0 && iCell<nNew ){
-      u8 *pCellptr = &pPg->aCellIdx[iCell * 2];
+      pCellptr = &pPg->aCellIdx[iCell * 2];
       memmove(&pCellptr[2], pCellptr, (nCell - iCell) * 2);
       nCell++;
       if( pageInsertArray(
@@ -6881,7 +6887,6 @@ static int balance_nonroot(
   }
   for(i=0; i<nNew; i++){
     int iBest = 0;                /* aPgno[] index of page number to use */
-    Pgno pgno;                    /* Page number to use */
     for(j=1; j<nNew; j++){
       if( aPgOrder[j]<aPgOrder[iBest] ) iBest = j;
     }