X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/5c19dc3ae3bd8e40a9c028b0deddd50ff337692c..07691282a056c4efea71e1e505527601e8cc166b:/OSX/libsecurity_cryptkit/lib/giantPort_Generic.h

diff --git a/OSX/libsecurity_cryptkit/lib/giantPort_Generic.h b/OSX/libsecurity_cryptkit/lib/giantPort_Generic.h
index 7062b406..5f4e4cd3 100644
--- a/OSX/libsecurity_cryptkit/lib/giantPort_Generic.h
+++ b/OSX/libsecurity_cryptkit/lib/giantPort_Generic.h
@@ -113,10 +113,14 @@ static inline void giantMulDigits(
  	giantDigit	*lowProduct,		/* RETURNED, low digit */
 	giantDigit	*hiProduct)		/* RETURNED, high digit */
 {
+#if GIANT_LOG2_BITS_PER_DIGIT>5
+#error "dprod is too small to represent the full result of the multiplication"
+#else
 	unsigned long long dprod;
+#endif
 
 	dprod = (unsigned long long)dig1 * (unsigned long long)dig2;
-	*hiProduct = (giantDigit)(dprod >> GIANT_BITS_PER_DIGIT);
+	*hiProduct =  (giantDigit)(dprod >> GIANT_BITS_PER_DIGIT);
 	*lowProduct = (giantDigit)dprod;
 }