--- a/src/tools/qlocale.cpp
+++ b/src/tools/qlocale.cpp
@@ -125,13 +125,24 @@ static inline double nan()
 #endif
 
 // We can't rely on -NAN, since all operations on a NAN should return a NAN.
+static double be_neg_nan; 
+static double le_neg_nan;
 static const unsigned char be_neg_nan_bytes[] = { 0xff, 0xf8, 0, 0, 0, 0, 0, 0 };
 static const unsigned char le_neg_nan_bytes[] = { 0, 0, 0, 0, 0, 0, 0xf8, 0xff };
+static bool neg_nan_init = false;
+
 static inline double negNan()
 {
+    if (!neg_nan_init)
+    {
+        memcpy(&be_neg_nan,be_neg_nan_bytes,sizeof(be_neg_nan_bytes));
+        memcpy(&le_neg_nan,le_neg_nan_bytes,sizeof(le_neg_nan_bytes));
+        neg_nan_init = true;
+    }
     return (ByteOrder == BigEndian ?
-            *((const double *) be_neg_nan_bytes) :
-            *((const double *) le_neg_nan_bytes));
+            be_neg_nan : 
+            le_neg_nan);
+            
 }
 
 // Sizes as defined by the ISO C99 standard - fallback