Index: src/loadext.c
==================================================================
--- src/loadext.c
+++ src/loadext.c
@@ -651,11 +651,11 @@
   if( rc ){
     return rc;
   }else
 #endif
   {
-    int i;
+    u32 i;
 #if SQLITE_THREADSAFE
     sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
 #endif
     wsdAutoextInit;
     sqlite3_mutex_enter(mutex);
@@ -695,11 +695,11 @@
 #endif
   int i;
   int n = 0;
   wsdAutoextInit;
   sqlite3_mutex_enter(mutex);
-  for(i=wsdAutoext.nExt-1; i>=0; i--){
+  for(i=(int)wsdAutoext.nExt-1; i>=0; i--){
     if( wsdAutoext.aExt[i]==xInit ){
       wsdAutoext.nExt--;
       wsdAutoext.aExt[i] = wsdAutoext.aExt[wsdAutoext.nExt];
       n++;
       break;
@@ -733,11 +733,11 @@
 ** Load all automatic extensions.
 **
 ** If anything goes wrong, set an error in the database connection.
 */
 void sqlite3AutoLoadExtensions(sqlite3 *db){
-  int i;
+  u32 i;
   int go = 1;
   int rc;
   int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*);
 
   wsdAutoextInit;

Index: src/os_unix.c
==================================================================
--- src/os_unix.c
+++ src/os_unix.c
@@ -6133,11 +6133,11 @@
   ** that we always use the same random number sequence.  This makes the
   ** tests repeatable.
   */
   memset(zBuf, 0, nBuf);
   randomnessPid = osGetpid(0);  
-#if !defined(SQLITE_TEST)
+#if !defined(SQLITE_TEST) && !defined(SQLITE_OMIT_RANDOMNESS)
   {
     int fd, got;
     fd = robust_open("/dev/urandom", O_RDONLY, 0);
     if( fd<0 ){
       time_t t;

Index: src/os_win.c
==================================================================
--- src/os_win.c
+++ src/os_win.c
@@ -5370,11 +5370,11 @@
 ** Write up to nBuf bytes of randomness into zBuf.
 */
 static int winRandomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
   int n = 0;
   UNUSED_PARAMETER(pVfs);
-#if defined(SQLITE_TEST)
+#if defined(SQLITE_TEST) || defined(SQLITE_OMIT_RANDOMNESS)
   n = nBuf;
   memset(zBuf, 0, nBuf);
 #else
   if( sizeof(SYSTEMTIME)<=nBuf-n ){
     SYSTEMTIME x;
@@ -5404,11 +5404,10 @@
     LARGE_INTEGER i;
     osQueryPerformanceCounter(&i);
     memcpy(&zBuf[n], &i, sizeof(i));
     n += sizeof(i);
   }
-#endif
 #if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
   if( sizeof(UUID)<=nBuf-n ){
     UUID id;
     memset(&id, 0, sizeof(UUID));
     osUuidCreate(&id);
@@ -5421,10 +5420,11 @@
     osUuidCreateSequential(&id);
     memcpy(zBuf, &id, sizeof(UUID));
     n += sizeof(UUID);
   }
 #endif
+#endif /* defined(SQLITE_TEST) || defined(SQLITE_ZERO_PRNG_SEED) */
   return n;
 }
 
 
 /*