libgo: Update to Go 1.1.1.

From-SVN: r200974

7 files changed, 43 insertions, 33 deletions

diff --git a/libgo/go/strconv/atof_test.go b/libgo/go/strconv/atof_test.go
index b4f3a6f..ba493321 100644
--- a/libgo/go/strconv/atof_test.go
+++ b/libgo/go/strconv/atof_test.go
@@ -110,6 +110,7 @@ var atoftests = []atofTest{
 	{"1e", "0", ErrSyntax},
 	{"1e-", "0", ErrSyntax},
 	{".e-1", "0", ErrSyntax},
+	{"1\x00.2", "0", ErrSyntax},
 
 	// http://www.exploringbinary.com/java-hangs-when-converting-2-2250738585072012e-308/
 	{"2.2250738585072012e-308", "2.2250738585072014e-308", nil},
diff --git a/libgo/go/strconv/atoi.go b/libgo/go/strconv/atoi.go
index bdd5d71..21c6900 100644
--- a/libgo/go/strconv/atoi.go
+++ b/libgo/go/strconv/atoi.go
@@ -20,7 +20,7 @@ type NumError struct {
 }
 
 func (e *NumError) Error() string {
-	return "strconv." + e.Func + ": " + `parsing "` + e.Num + `": ` + e.Err.Error()
+	return "strconv." + e.Func + ": " + "parsing " + Quote(e.Num) + ": " + e.Err.Error()
 }
 
 func syntaxError(fn, str string) *NumError {
diff --git a/libgo/go/strconv/atoi_test.go b/libgo/go/strconv/atoi_test.go
index d0e7b61..9407573 100644
--- a/libgo/go/strconv/atoi_test.go
+++ b/libgo/go/strconv/atoi_test.go
@@ -5,6 +5,7 @@
 package strconv_test
 
 import (
+	"errors"
 	"reflect"
 	. "strconv"
 	"testing"
@@ -146,6 +147,16 @@ var atoi32tests = []atoi32Test{
 	{"-2147483649", -1 << 31, ErrRange},
 }
 
+type numErrorTest struct {
+	num, want string
+}
+
+var numErrorTests = []numErrorTest{
+	{"0", `strconv.ParseFloat: parsing "0": failed`},
+	{"`", "strconv.ParseFloat: parsing \"`\": failed"},
+	{"1\x00.2", `strconv.ParseFloat: parsing "1\x00.2": failed`},
+}
+
 func init() {
 	// The atoi routines return NumErrors wrapping
 	// the error and the string.  Convert the tables above.
@@ -277,6 +288,19 @@ func TestParseInt(t *testing.T) {
 	}
 }
 
+func TestNumError(t *testing.T) {
+	for _, test := range numErrorTests {
+		err := &NumError{
+			Func: "ParseFloat",
+			Num:  test.num,
+			Err:  errors.New("failed"),
+		}
+		if got := err.Error(); got != test.want {
+			t.Errorf(`(&NumError{"ParseFloat", %q, "failed"}).Error() = %v, want %v`, test.num, got, test.want)
+		}
+	}
+}
+
 func BenchmarkAtoi(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		ParseInt("12345678", 10, 0)
diff --git a/libgo/go/strconv/extfloat.go b/libgo/go/strconv/extfloat.go
index b7eaaa6..bed8b16 100644
--- a/libgo/go/strconv/extfloat.go
+++ b/libgo/go/strconv/extfloat.go
@@ -636,7 +636,6 @@ func (f *extFloat) ShortestDecimal(d *decimalSlice, lower, upper *extFloat) bool
 				1<<shift, multiplier*2)
 		}
 	}
-	return false
 }
 
 // adjustLastDigit modifies d = x-currentDiff*ε, to get closest to
diff --git a/libgo/go/strconv/fp_test.go b/libgo/go/strconv/fp_test.go
index 294b7a9..6de2f8b 100644
--- a/libgo/go/strconv/fp_test.go
+++ b/libgo/go/strconv/fp_test.go
@@ -7,7 +7,6 @@ package strconv_test
 import (
 	"bufio"
 	"fmt"
-	"io"
 	"os"
 	"strconv"
 	"strings"
@@ -102,19 +101,10 @@ func TestFp(t *testing.T) {
 	}
 	defer f.Close()
 
-	b := bufio.NewReader(f)
+	s := bufio.NewScanner(f)
 
-	lineno := 0
-	for {
-		line, err2 := b.ReadString('\n')
-		if err2 == io.EOF {
-			break
-		}
-		if err2 != nil {
-			t.Fatal("testfp: read testdata/testfp.txt: " + err2.Error())
-		}
-		line = line[0 : len(line)-1]
-		lineno++
+	for lineno := 1; s.Scan(); lineno++ {
+		line := s.Text()
 		if len(line) == 0 || line[0] == '#' {
 			continue
 		}
@@ -148,4 +138,7 @@ func TestFp(t *testing.T) {
 				"want ", a[3], " got ", s)
 		}
 	}
+	if s.Err() != nil {
+		t.Fatal("testfp: read testdata/testfp.txt: ", s.Err())
+	}
 }
diff --git a/libgo/go/strconv/quote.go b/libgo/go/strconv/quote.go
index 8a73f9d..8cbef88 100644
--- a/libgo/go/strconv/quote.go
+++ b/libgo/go/strconv/quote.go
@@ -139,8 +139,9 @@ func AppendQuoteRuneToASCII(dst []byte, r rune) []byte {
 	return append(dst, QuoteRuneToASCII(r)...)
 }
 
-// CanBackquote returns whether the string s would be
-// a valid Go string literal if enclosed in backquotes.
+// CanBackquote reports whether the string s can be represented
+// unchanged as a single-line backquoted string without control
+// characters other than space and tab.
 func CanBackquote(s string) bool {
 	for i := 0; i < len(s); i++ {
 		if (s[i] < ' ' && s[i] != '\t') || s[i] == '`' {
diff --git a/libgo/go/strconv/strconv_test.go b/libgo/go/strconv/strconv_test.go
index b01aff1..381874b 100644
--- a/libgo/go/strconv/strconv_test.go
+++ b/libgo/go/strconv/strconv_test.go
@@ -24,14 +24,12 @@ var (
 		desc  string
 		fn    func()
 	}{
-		// TODO(bradfitz): this might be 0, once escape analysis is better
-		{1, `AppendInt(localBuf[:0], 123, 10)`, func() {
+		{0, `AppendInt(localBuf[:0], 123, 10)`, func() {
 			var localBuf [64]byte
 			AppendInt(localBuf[:0], 123, 10)
 		}},
 		{0, `AppendInt(globalBuf[:0], 123, 10)`, func() { AppendInt(globalBuf[:0], 123, 10) }},
-		// TODO(bradfitz): this might be 0, once escape analysis is better
-		{1, `AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)`, func() {
+		{0, `AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)`, func() {
 			var localBuf [64]byte
 			AppendFloat(localBuf[:0], 1.23, 'g', 5, 64)
 		}},
@@ -48,19 +46,13 @@ var (
 )
 
 func TestCountMallocs(t *testing.T) {
-	defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(1))
+	if runtime.GOMAXPROCS(0) > 1 {
+		t.Skip("skipping; GOMAXPROCS>1")
+	}
 	for _, mt := range mallocTest {
-		const N = 100
-		memstats := new(runtime.MemStats)
-		runtime.ReadMemStats(memstats)
-		mallocs := 0 - memstats.Mallocs
-		for i := 0; i < N; i++ {
-			mt.fn()
-		}
-		runtime.ReadMemStats(memstats)
-		mallocs += memstats.Mallocs
-		if mallocs/N > uint64(mt.count) {
-			t.Errorf("%s: expected %d mallocs, got %d", mt.desc, mt.count, mallocs/N)
+		allocs := testing.AllocsPerRun(100, mt.fn)
+		if max := float64(mt.count); allocs > max {
+			t.Errorf("%s: %v allocs, want <=%v", mt.desc, allocs, max)
 		}
 	}
 }