diff -ru sqlite-3.5.9/src/os_unix.c sqlite-3.5.9+iPhone/src/os_unix.c
--- sqlite-3.5.9/src/os_unix.c	2008-05-13 12:51:29.000000000 +0000
+++ sqlite-3.5.9+iPhone/src/os_unix.c	2008-08-01 08:18:14.000000000 +0000
@@ -75,6 +75,10 @@
 */
 #define MAX_PATHNAME 512
 
+#ifdef __APPLE__
+#import <CoreServices/CoreServices.h>
+#endif
+
 
 /*
 ** The unixFile structure is subclass of sqlite3_file specific for the unix
@@ -2497,6 +2501,7 @@
 static int unixGetTempname(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
   static const char *azDirs[] = {
      0,
+     0,
      "/var/tmp",
      "/usr/tmp",
      "/tmp",
@@ -2509,6 +2514,12 @@
   int i, j;
   struct stat buf;
   const char *zDir = ".";
+#ifdef __APPLE__
+  void *pool;
+  CFStringRef cfstr;
+  CFIndex maxsize;
+  char *cstr;
+#endif
 
   /* It's odd to simulate an io-error here, but really this is just
   ** using the io-error infrastructure to test that SQLite handles this
@@ -2516,6 +2526,18 @@
   */
   SimulateIOError( return SQLITE_ERROR );
 
+#ifdef __APPLE__
+  if (azDirs[1] == NULL) {
+    pool = NSPushAutoreleasePool(0);
+    cfstr = (CFStringRef) NSTemporaryDirectory();
+    maxsize = CFStringGetMaximumSizeForEncoding(CFStringGetLength(cfstr), kCFStringEncodingUTF8) + 1;
+    cstr = malloc(maxsize);
+    CFStringGetCString(cfstr, cstr, maxsize, kCFStringEncodingUTF8);
+    azDirs[1] = cstr;
+    NSPopAutoreleasePool(pool);
+  }
+#endif
+
   azDirs[0] = sqlite3_temp_directory;
   for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); i++){
     if( azDirs[i]==0 ) continue;