--- guile-2.0.11/libguile/vm-i-scheme.c.orig	2016-05-16 11:11:30.490598931 +0200
+++ guile-2.0.11/libguile/vm-i-scheme.c	2016-05-16 11:12:00.738677032 +0200
@@ -363,7 +363,7 @@
       {									\
 	scm_t_signed_bits rlo, rhi;					\
 	asm ("smull %0, %1, %2, %3\n"					\
-	     : "=r" (rlo), "=r" (rhi)					\
+	     : "=&r" (rlo), "=&r" (rhi)					\
 	     : "r" (SCM_UNPACK (x) - scm_tc2_int),			\
 	       "r" (SCM_I_INUM (y)));					\
 	if (SCM_LIKELY (SCM_SRS (rlo, 31) == rhi))			\