--- /dev/null
+Index: gmp-5.0.1/longlong.h
+===================================================================
+--- gmp-5.0.1.orig/longlong.h
++++ gmp-5.0.1/longlong.h
+@@ -849,8 +849,10 @@ extern UWtype __MPN(udiv_qrnnd) _PROTO (
+ count is only an int. */
+ #define count_trailing_zeros(count, x) \
+ do { \
++ UDItype __cbtmp; \
+ ASSERT ((x) != 0); \
+- __asm__ ("bsfq %1,%q0" : "=r" (count) : "rm" ((UDItype)(x))); \
++ __asm__ ("bsfq %1,%0" : "=r" (__cbtmp) : "rm" ((UDItype)(x))); \
++ (count) = __cbtmp; \
+ } while (0)
+ #endif /* x86_64 */
+