diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index b86cb856d52..4fe569ccd73 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-db685a1a9aa8b3b916dd6d1284895e01d73158e1
+5fd112e5c2968e94761c41519c451d789e23a92b
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/libgo/go/math/ldexp.go b/libgo/go/math/ldexp.go
index 2898f5dd498..e91a090c986 100644
--- a/libgo/go/math/ldexp.go
+++ b/libgo/go/math/ldexp.go
@@ -13,10 +13,15 @@ package math
 //	Ldexp(NaN, exp) = NaN
 
 //extern ldexp
-func libc_ldexp(float64, int) float64
+func libc_ldexp(float64, int32) float64
 
 func Ldexp(frac float64, exp int) float64 {
-	r := libc_ldexp(frac, exp)
+	if exp > MaxInt32 {
+		exp = MaxInt32
+	} else if exp < MinInt32 {
+		exp = MinInt32
+	}
+	r := libc_ldexp(frac, int32(exp))
 	return r
 }