Index: ext/fts3/fts3_unicode2.c
==================================================================
--- ext/fts3/fts3_unicode2.c
+++ ext/fts3/fts3_unicode2.c
@@ -144,11 +144,11 @@
         iHi = iTest-1;
       }
     }
     assert( aEntry[0]<key );
     assert( key>=aEntry[iRes] );
-    return (c >= ((aEntry[iRes]>>10) + (aEntry[iRes]&0x3FF)));
+    return (((unsigned int)c) >= ((aEntry[iRes]>>10) + (aEntry[iRes]&0x3FF)));
   }
   return 1;
 }
 
 

Index: src/mutex_w32.c
==================================================================
--- src/mutex_w32.c
+++ src/mutex_w32.c
@@ -107,11 +107,11 @@
 ** processing, the "interlocked" magic is probably not
 ** strictly necessary.
 */
 static long winMutex_lock = 0;
 
-extern void sqlite3_win32_sleep(DWORD milliseconds); /* os_win.c */
+void sqlite3_win32_sleep(DWORD milliseconds); /* os_win.c */
 
 static int winMutexInit(void){ 
   /* The first to increment to 1 does actual initialization */
   if( InterlockedCompareExchange(&winMutex_lock, 1, 0)==0 ){
     int i;

Index: src/shell.c
==================================================================
--- src/shell.c
+++ src/shell.c
@@ -2695,14 +2695,16 @@
 static char *find_home_dir(void){
   static char *home_dir = NULL;
   if( home_dir ) return home_dir;
 
 #if !defined(_WIN32) && !defined(WIN32) && !defined(__OS2__) && !defined(_WIN32_WCE) && !defined(__RTP__) && !defined(_WRS_KERNEL)
-  struct passwd *pwent;
-  uid_t uid = getuid();
-  if( (pwent=getpwuid(uid)) != NULL) {
-    home_dir = pwent->pw_dir;
+  {
+    struct passwd *pwent;
+    uid_t uid = getuid();
+    if( (pwent=getpwuid(uid)) != NULL) {
+      home_dir = pwent->pw_dir;
+    }
   }
 #endif
 
 #if defined(_WIN32_WCE)
   /* Windows CE (arm-wince-mingw32ce-gcc) does not provide getenv()