[dev.fuzz] all: merge master into dev.fuzz

Change-Id: I5d8c8329ccc9d747bd81ade6b1cb7cb8ae2e94b2

1 files changed, 18 insertions, 10 deletions

diff --git a/src/unicode/utf8/utf8_test.go b/src/unicode/utf8/utf8_test.go
index 359461bd05..eaf1b5ffee 100644
--- a/src/unicode/utf8/utf8_test.go
+++ b/src/unicode/utf8/utf8_test.go
@@ -597,16 +597,24 @@ func BenchmarkDecodeJapaneseRune(b *testing.B) {
 	}
 }
 
-func BenchmarkFullASCIIRune(b *testing.B) {
-	a := []byte{'a'}
-	for i := 0; i < b.N; i++ {
-		FullRune(a)
-	}
-}
+// boolSink is used to reference the return value of benchmarked
+// functions to avoid dead code elimination.
+var boolSink bool
 
-func BenchmarkFullJapaneseRune(b *testing.B) {
-	nihon := []byte("本")
-	for i := 0; i < b.N; i++ {
-		FullRune(nihon)
+func BenchmarkFullRune(b *testing.B) {
+	benchmarks := []struct {
+		name string
+		data []byte
+	}{
+		{"ASCII", []byte("a")},
+		{"Incomplete", []byte("\xf0\x90\x80")},
+		{"Japanese", []byte("本")},
+	}
+	for _, bm := range benchmarks {
+		b.Run(bm.name, func(b *testing.B) {
+			for i := 0; i < b.N; i++ {
+				boolSink = FullRune(bm.data)
+			}
+		})
 	}
 }