libgo: update to Go1.14beta1

[platform/upstream/gcc.git] / libgo / go / math / big / ftoa.go

diff --git a/libgo/go/math/big/ftoa.go b/libgo/go/math/big/ftoa.go
index 6cae63e..5506e6e 100644 (file)
--- a/libgo/go/math/big/ftoa.go
+++ b/libgo/go/math/big/ftoa.go
@@ -384,7 +384,7 @@ func (x *Float) fmtX(buf []byte, prec int) []byte {
        case w > n:
                m = nat(nil).shr(m, w-n)
        }
-       exp := x.exp - 1
+       exp64 := int64(x.exp) - 1 // avoid wrap-around
 
        hm := m.utoa(16)
        if debugFloat && hm[0] != '1' {
@@ -397,7 +397,6 @@ func (x *Float) fmtX(buf []byte, prec int) []byte {
        }
 
        buf = append(buf, 'p')
-       exp64 := int64(exp)
        if exp64 >= 0 {
                buf = append(buf, '+')
        } else {