diff -urEbwB mingw-w64-runtime-1.0b.20100818/math/scalbnl.S mingw-w64-runtime-1.0b.20100818/math/scalbnl.S
--- mingw-w64-runtime-1.0b.20100818/math/scalbnl.S	2010-05-03 12:25:18.000000000 +0200
+++ mingw-w64-runtime-1.0b.20100818/math/scalbnl.S	2010-09-24 01:47:59.000000000 +0200
@@ -17,7 +17,7 @@
 __MINGW_USYMBOL(scalbnl):
 #ifdef _WIN64
 	subq  $24, %rsp
-	andq    $0xffffffff, %r8
+	andl    $-1, %r8d
 	movq	%r8, (%rsp)
 	fildl	(%rsp)
 	fldt	(%rdx)