Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 59 insertions, 0 deletions

diff --git a/test/fixedbugs/issue8004.go b/test/fixedbugs/issue8004.go
new file mode 100644
index 0000000..548ee1c
--- /dev/null
+++ b/test/fixedbugs/issue8004.go
@@ -0,0 +1,59 @@
+// run
+
+// Copyright 2014 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 main
+
+import (
+	"reflect"
+	"runtime"
+	"unsafe"
+)
+
+func main() {
+	test1()
+	test2()
+}
+
+func test1() {
+	var all []interface{}
+	for i := 0; i < 100; i++ {
+		p := new([]int)
+		*p = append(*p, 1, 2, 3, 4)
+		h := (*reflect.SliceHeader)(unsafe.Pointer(p))
+		all = append(all, h, p)
+	}
+	runtime.GC()
+	for i := 0; i < 100; i++ {
+		p := *all[2*i+1].(*[]int)
+		if p[0] != 1 || p[1] != 2 || p[2] != 3 || p[3] != 4 {
+			println("BUG test1: bad slice at index", i, p[0], p[1], p[2], p[3])
+			return
+		}
+	}
+}
+
+type T struct {
+	H *reflect.SliceHeader
+	P *[]int
+}
+
+func test2() {
+	var all []T
+	for i := 0; i < 100; i++ {
+		p := new([]int)
+		*p = append(*p, 1, 2, 3, 4)
+		h := (*reflect.SliceHeader)(unsafe.Pointer(p))
+		all = append(all, T{H: h}, T{P: p})
+	}
+	runtime.GC()
+	for i := 0; i < 100; i++ {
+		p := *all[2*i+1].P
+		if p[0] != 1 || p[1] != 2 || p[2] != 3 || p[3] != 4 {
+			println("BUG test2: bad slice at index", i, p[0], p[1], p[2], p[3])
+			return
+		}
+	}
+}