Index: src/btree.c
==================================================================
--- src/btree.c
+++ src/btree.c
@@ -7349,11 +7349,11 @@
   int k;                          /* Current slot in pCArray->apEnd[] */
   u8 *pSrcEnd;                    /* Current pCArray->apEnd[k] value */
 
   assert( i<iEnd );
   j = get2byte(&aData[hdr+5]);
-  if( j>(u32)usableSize ){ j = 0; }
+  if( NEVER(j>(u32)usableSize) ){ j = 0; }
   memcpy(&pTmp[j], &aData[j], usableSize - j);
 
   for(k=0; pCArray->ixNx[k]<=i && ALWAYS(k<NB*2); k++){}
   pSrcEnd = pCArray->apEnd[k];
 
@@ -7583,11 +7583,11 @@
     nCell -= nTail;
   }
 
   pData = &aData[get2byteNotZero(&aData[hdr+5])];
   if( pData<pBegin ) goto editpage_fail;
-  if( pData>pPg->aDataEnd ) goto editpage_fail;
+  if( NEVER(pData>pPg->aDataEnd) ) goto editpage_fail;
 
   /* Add cells to the start of the page */
   if( iNew<iOld ){
     int nAdd = MIN(nNew,iOld-iNew);
     assert( (iOld-iNew)<nNew || nCell==0 || CORRUPT_DB );