libgo: update to go1.9

    
    Reviewed-on: https://go-review.googlesource.com/63753

From-SVN: r252767

3 files changed, 32 insertions, 7 deletions

diff --git a/libgo/go/encoding/binary/binary.go b/libgo/go/encoding/binary/binary.go
index 3834254..2d01a3c 100644
--- a/libgo/go/encoding/binary/binary.go
+++ b/libgo/go/encoding/binary/binary.go
@@ -152,7 +152,8 @@ func (bigEndian) GoString() string { return "binary.BigEndian" }
 // When reading into structs, the field data for fields with
 // blank (_) field names is skipped; i.e., blank field names
 // may be used for padding.
-// When reading into a struct, all non-blank fields must be exported.
+// When reading into a struct, all non-blank fields must be exported
+// or Read may panic.
 //
 // The error is EOF only if no bytes were read.
 // If an EOF happens after reading some but not all the bytes,
diff --git a/libgo/go/encoding/binary/binary_test.go b/libgo/go/encoding/binary/binary_test.go
index fc7f276..0547bee 100644
--- a/libgo/go/encoding/binary/binary_test.go
+++ b/libgo/go/encoding/binary/binary_test.go
@@ -500,3 +500,27 @@ func BenchmarkWriteSlice1000Int32s(b *testing.B) {
 	}
 	b.StopTimer()
 }
+
+func BenchmarkPutUint16(b *testing.B) {
+	buf := [2]byte{}
+	b.SetBytes(2)
+	for i := 0; i < b.N; i++ {
+		BigEndian.PutUint16(buf[:], uint16(i))
+	}
+}
+
+func BenchmarkPutUint32(b *testing.B) {
+	buf := [4]byte{}
+	b.SetBytes(4)
+	for i := 0; i < b.N; i++ {
+		BigEndian.PutUint32(buf[:], uint32(i))
+	}
+}
+
+func BenchmarkPutUint64(b *testing.B) {
+	buf := [8]byte{}
+	b.SetBytes(8)
+	for i := 0; i < b.N; i++ {
+		BigEndian.PutUint64(buf[:], uint64(i))
+	}
+}
diff --git a/libgo/go/encoding/binary/varint.go b/libgo/go/encoding/binary/varint.go
index d7a75f9..bcb8ac9 100644
--- a/libgo/go/encoding/binary/varint.go
+++ b/libgo/go/encoding/binary/varint.go
@@ -53,9 +53,9 @@ func PutUvarint(buf []byte, x uint64) int {
 // number of bytes read (> 0). If an error occurred, the value is 0
 // and the number of bytes n is <= 0 meaning:
 //
-//	n == 0: buf too small
-//	n  < 0: value larger than 64 bits (overflow)
-//              and -n is the number of bytes read
+// 	n == 0: buf too small
+// 	n  < 0: value larger than 64 bits (overflow)
+// 	        and -n is the number of bytes read
 //
 func Uvarint(buf []byte) (uint64, int) {
 	var x uint64
@@ -87,9 +87,9 @@ func PutVarint(buf []byte, x int64) int {
 // number of bytes read (> 0). If an error occurred, the value is 0
 // and the number of bytes n is <= 0 with the following meaning:
 //
-//	n == 0: buf too small
-//	n  < 0: value larger than 64 bits (overflow)
-//              and -n is the number of bytes read
+// 	n == 0: buf too small
+// 	n  < 0: value larger than 64 bits (overflow)
+// 	        and -n is the number of bytes read
 //
 func Varint(buf []byte) (int64, int) {
 	ux, n := Uvarint(buf) // ok to continue in presence of error