Index: src/btree.c
==================================================================
--- src/btree.c
+++ src/btree.c
@@ -41,10 +41,29 @@
 ** is empty, the offset should be 65536, but the 2-byte value stores zero.
 ** This routine makes the necessary adjustment to 65536.
 */
 #define get2byteNotZero(X)  (((((int)get2byte(X))-1)&0xffff)+1)
 
+/*
+** Values passed as the 5th argument to allocateBtreePage()
+*/
+#define BTALLOC_ANY   0           /* Allocate any page */
+#define BTALLOC_EXACT 1           /* Allocate exact page if possible */
+#define BTALLOC_LE    2           /* Allocate any page <= the parameter */
+
+/*
+** Macro IfNotOmitAV(x) returns (x) if SQLITE_OMIT_AUTOVACUUM is not 
+** defined, or 0 if it is. For example:
+**
+**   bIncrVacuum = IfNotOmitAV(pBtShared->incrVacuum);
+*/
+#ifndef SQLITE_OMIT_AUTOVACUUM
+#define IfNotOmitAV(expr) (expr)
+#else
+#define IfNotOmitAV(expr) 0
+#endif
+
 #ifndef SQLITE_OMIT_SHARED_CACHE
 /*
 ** A list of BtShared objects that are eligible for participation
 ** in shared cache.  This variable has file scope during normal builds,
 ** but the test harness needs to access it so we make it global for 
@@ -2593,11 +2612,11 @@
   ** is requested, this is a no-op.
   */
   if( p->inTrans==TRANS_WRITE || (p->inTrans==TRANS_READ && !wrflag) ){
     goto trans_begun;
   }
-  assert( pBt->bDoTruncate==0 );
+  assert( IfNotOmitAV(pBt->bDoTruncate)==0 );
 
   /* Write transactions are not possible on a read-only database */
   if( (pBt->btsFlags & BTS_READ_ONLY)!=0 && wrflag ){
     rc = SQLITE_READONLY;
     goto trans_begun;
@@ -2908,13 +2927,10 @@
   return rc;
 }
 
 /* Forward declaration required by incrVacuumStep(). */
 static int allocateBtreePage(BtShared *, MemPage **, Pgno *, Pgno, u8);
-#define BTALLOC_ANY   0           /* Allocate any page */
-#define BTALLOC_EXACT 1           /* Allocate exact page if possible */
-#define BTALLOC_LE    2           /* Allocate any page <= the parameter */
 
 /*
 ** Perform a single step of an incremental-vacuum. If successful, return
 ** SQLITE_OK. If there is no work to do (and therefore no point in 
 ** calling this function again), return SQLITE_DONE. Or, if an error 
@@ -4900,11 +4916,11 @@
   MemPage *pTrunk = 0;
   MemPage *pPrevTrunk = 0;
   Pgno mxPage;     /* Total size of the database file */
 
   assert( sqlite3_mutex_held(pBt->mutex) );
-  assert( eMode==BTALLOC_ANY || (nearby>0 && pBt->autoVacuum) );
+  assert( eMode==BTALLOC_ANY || (nearby>0 && IfNotOmitAV(pBt->autoVacuum)) );
   pPage1 = pBt->pPage1;
   mxPage = btreePagecount(pBt);
   n = get4byte(&pPage1->aData[36]);
   testcase( n==mxPage-1 );
   if( n>=mxPage ){
@@ -5133,11 +5149,11 @@
     ** content for any page that really does lie past the end of the database
     ** file on disk. So the effects of disabling the no-content optimization
     ** here are confined to those pages that lie between the end of the
     ** database image and the end of the database file.
     */
-    int bNoContent = (0==pBt->bDoTruncate);
+    int bNoContent = (0==IfNotOmitAV(pBt->bDoTruncate));
 
     rc = sqlite3PagerWrite(pBt->pPage1->pDbPage);
     if( rc ) return rc;
     pBt->nPage++;
     if( pBt->nPage==PENDING_BYTE_PAGE(pBt) ) pBt->nPage++;

Index: src/pragma.c
==================================================================
--- src/pragma.c
+++ src/pragma.c
@@ -1128,10 +1128,11 @@
     }
   }else
 #endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */
 
 #ifndef SQLITE_OMIT_FOREIGN_KEY
+#ifndef SQLITE_OMIT_TRIGGER
   if( sqlite3StrICmp(zLeft, "foreign_key_check")==0 ){
     FKey *pFK;             /* A foreign key constraint */
     Table *pTab;           /* Child table contain "REFERENCES" keyword */
     Table *pParent;        /* Parent table that child points to */
     Index *pIdx;           /* Index in the parent table */
@@ -1239,10 +1240,11 @@
       }
       sqlite3VdbeAddOp2(v, OP_Next, 0, addrTop+1);
       sqlite3VdbeJumpHere(v, addrTop);
     }
   }else
+#endif /* !defined(SQLITE_OMIT_TRIGGER) */
 #endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */
 
 #ifndef NDEBUG
   if( sqlite3StrICmp(zLeft, "parser_trace")==0 ){
     if( zRight ){