diff -up sqlite-3.5.9/src/util.c.nan-ix86-fix sqlite-3.5.9/src/util.c
--- sqlite-3.5.9/src/util.c.nan-ix86-fix	2008-05-13 19:41:50.000000000 +0300
+++ sqlite-3.5.9/src/util.c	2009-01-17 12:30:30.000000000 +0200
@@ -35,7 +35,8 @@ int sqlite3IsNaN(double x){
   **      rules/specifications for math functions.
   */
   volatile double y = x;
-  return x!=y;
+  volatile double z = y;
+  return y!=z;
 }
 
 /*