libgo: Merge from revision 18783:00cce3a34d7e of master library.

This revision was committed January 7, 2014.  The next
revision deleted runtime/mfinal.c.  That will be done in a
subsequent merge.

This merge changes type descriptors to add a zero field,
pointing to a zero value for that type.  This is implemented
as a common variable.

	* go-gcc.cc (Gcc_backend::implicit_variable): Add is_common and
	alignment parameters.  Permit init parameter to be NULL.

From-SVN: r211249

5 files changed, 76 insertions, 11 deletions

diff --git a/libgo/go/strconv/atob_test.go b/libgo/go/strconv/atob_test.go
index a7c1454..28f469f 100644
--- a/libgo/go/strconv/atob_test.go
+++ b/libgo/go/strconv/atob_test.go
@@ -5,6 +5,7 @@
 package strconv_test
 
 import (
+	"bytes"
 	. "strconv"
 	"testing"
 )
@@ -55,3 +56,36 @@ func TestParseBool(t *testing.T) {
 		}
 	}
 }
+
+var boolString = map[bool]string{
+	true:  "true",
+	false: "false",
+}
+
+func TestFormatBool(t *testing.T) {
+	for b, s := range boolString {
+		if f := FormatBool(b); f != s {
+			t.Errorf(`FormatBool(%v): expected %q but got %q`, b, s, f)
+		}
+	}
+}
+
+type appendBoolTest struct {
+	b   bool
+	in  []byte
+	out []byte
+}
+
+var appendBoolTests = []appendBoolTest{
+	{true, []byte("foo "), []byte("foo true")},
+	{false, []byte("foo "), []byte("foo false")},
+}
+
+func TestAppendBool(t *testing.T) {
+	for _, test := range appendBoolTests {
+		b := AppendBool(test.in, test.b)
+		if !bytes.Equal(b, test.out) {
+			t.Errorf("AppendBool(%q, %v): expected %q but got %q", test.in, test.b, test.out, b)
+		}
+	}
+}
diff --git a/libgo/go/strconv/atof.go b/libgo/go/strconv/atof.go
index 1dc521f..beaa68d 100644
--- a/libgo/go/strconv/atof.go
+++ b/libgo/go/strconv/atof.go
@@ -354,17 +354,6 @@ out:
 	return bits, overflow
 }
 
-func (d *decimal) atof32int() float32 {
-	f := float32(0)
-	for i := 0; i < d.nd; i++ {
-		f = f*10 + float32(d.d[i]-'0')
-	}
-	if d.neg {
-		f = -f
-	}
-	return f
-}
-
 // Exact powers of 10.
 var float64pow10 = []float64{
 	1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9,
diff --git a/libgo/go/strconv/isprint.go b/libgo/go/strconv/isprint.go
index db5f0fb..91f1795 100644
--- a/libgo/go/strconv/isprint.go
+++ b/libgo/go/strconv/isprint.go
@@ -1,3 +1,7 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // DO NOT EDIT.  GENERATED BY
 //     go run makeisprint.go >x && mv x isprint.go
 
diff --git a/libgo/go/strconv/makeisprint.go b/libgo/go/strconv/makeisprint.go
index 8a6699b..216159c 100644
--- a/libgo/go/strconv/makeisprint.go
+++ b/libgo/go/strconv/makeisprint.go
@@ -122,6 +122,9 @@ func main() {
 		}
 	}
 
+	fmt.Printf(`// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.` + "\n\n")
 	fmt.Printf("// DO NOT EDIT.  GENERATED BY\n")
 	fmt.Printf("//     go run makeisprint.go >x && mv x isprint.go\n\n")
 	fmt.Printf("package strconv\n\n")
diff --git a/libgo/go/strconv/quote_example_test.go b/libgo/go/strconv/quote_example_test.go
new file mode 100644
index 0000000..405a57e
--- /dev/null
+++ b/libgo/go/strconv/quote_example_test.go
@@ -0,0 +1,35 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package strconv_test
+
+import (
+	"fmt"
+	"strconv"
+)
+
+func ExampleUnquote() {
+	test := func(s string) {
+		t, err := strconv.Unquote(s)
+		if err != nil {
+			fmt.Printf("Unquote(%#v): %v\n", s, err)
+		} else {
+			fmt.Printf("Unquote(%#v) = %v\n", s, t)
+		}
+	}
+
+	s := `cafe\u0301`
+	// If the string doesn't have quotes, it can't be unquoted.
+	test(s) // invalid syntax
+	test("`" + s + "`")
+	test(`"` + s + `"`)
+
+	test(`'\u00e9'`)
+
+	// Output:
+	// Unquote("cafe\\u0301"): invalid syntax
+	// Unquote("`cafe\\u0301`") = cafe\u0301
+	// Unquote("\"cafe\\u0301\"") = café
+	// Unquote("'\\u00e9'") = é
+}