reflect: optimize Value.IsZero for array types

[gostls13.git] / src / reflect / all_test.go

diff --git a/src/reflect/all_test.go b/src/reflect/all_test.go
index 961595aa3232f30b6870c66bed701f0b68f47c7a..bece56f7e73b06c670442b811ad8819cf881477f 100644 (file)
--- a/src/reflect/all_test.go
+++ b/src/reflect/all_test.go
@@ -1454,6 +1454,8 @@ func TestIsZero(t *testing.T) {
                {[3][]int{{1}}, false},                  // incomparable array
                {[1 << 12]byte{}, true},
                {[1 << 12]byte{1}, false},
+               {[1]struct{ p *int }{}, true},
+               {[1]struct{ p *int }{{new(int)}}, false},
                {[3]Value{}, true},
                {[3]Value{{}, ValueOf(0), {}}, false},
                // Chan
@@ -1536,6 +1538,15 @@ func TestIsZero(t *testing.T) {
        }()
 }
 
+func TestInternalIsZero(t *testing.T) {
+       b := make([]byte, 512)
+       for a := 0; a < 8; a++ {
+               for i := 256 + 7; i <= 512-a; i++ {
+                       InternalIsZero(b[a : a+i])
+               }
+       }
+}
+
 func TestInterfaceExtraction(t *testing.T) {
        var s struct {
                W io.Writer