1 files changed, 131 insertions, 0 deletions
diff --git a/test/fixedbugs/issue15528.go b/test/fixedbugs/issue15528.go
new file mode 100644
index 0000000..b1f9dfb
--- /dev/null
+++ b/test/fixedbugs/issue15528.go
@@ -0,0 +1,131 @@
+// run
+
+// Copyright 2016 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 (
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+	"unsafe"
+)
+
+type RWS struct{}
+
+func (x *RWS) Read(p []byte) (n int, err error)                   { return }
+func (x *RWS) Write(p []byte) (n int, err error)                  { return }
+func (x *RWS) Seek(offset int64, whence int) (n int64, err error) { return }
+func (x *RWS) String() string                                     { return "rws" }
+
+func makeRWS() io.ReadWriteSeeker { return &RWS{} }
+func makeStringer() fmt.Stringer  { return &RWS{} }
+
+// Test correct construction of static empty interface values
+var efaces = [...]struct {
+	x interface{}
+	s string
+}{
+	{nil, "<nil> <nil>"},
+	{1, "int 1"},
+	{int(1), "int 1"},
+	{Int(int(2)), "main.Int Int=2"},
+	{int(Int(3)), "int 3"},
+	{[1]int{2}, "[1]int [2]"},
+	{io.Reader(io.ReadWriter(io.ReadWriteSeeker(nil))), "<nil> <nil>"},
+	{io.Reader(io.ReadWriter(io.ReadWriteSeeker(&RWS{}))), "*main.RWS rws"},
+	{makeRWS(), "*main.RWS rws"},
+	{map[string]string{"here": "there"}, "map[string]string map[here:there]"},
+	{chan bool(nil), "chan bool <nil>"},
+	{unsafe.Pointer(uintptr(0)), "unsafe.Pointer <nil>"},
+	{(*byte)(nil), "*uint8 <nil>"},
+	{io.Writer((*os.File)(nil)), "*os.File <nil>"},
+	{(interface{})(io.Writer((*os.File)(nil))), "*os.File <nil>"},
+	{fmt.Stringer(Strunger(((*Int)(nil)))), "*main.Int <nil>"},
+}
+
+type Int int
+
+func (i Int) String() string { return fmt.Sprintf("Int=%d", i) }
+func (i Int) Strung()        {}
+
+type Strunger interface {
+	fmt.Stringer
+	Strung()
+}
+
+// Test correct construction of static non-empty interface values
+var ifaces = [...]struct {
+	x fmt.Stringer
+	s string
+}{
+	{nil, "<nil> <nil> %!s(<nil>)"},
+	{Int(3), "main.Int 3 Int=3"},
+	{Int(int(Int(4))), "main.Int 4 Int=4"},
+	{Strunger(Int(5)), "main.Int 5 Int=5"},
+	{makeStringer(), "*main.RWS &main.RWS{} rws"},
+	{fmt.Stringer(nil), "<nil> <nil> %!s(<nil>)"},
+	{(*RWS)(nil), "*main.RWS (*main.RWS)(nil) rws"},
+}
+
+// Test correct handling of direct interface values
+var (
+	one  int         = 1
+	iptr interface{} = &one
+	clos int
+	f    interface{} = func() { clos++ }
+	deep interface{} = [1]struct{ a *[2]byte }{{a: &[2]byte{'z', 'w'}}}
+	ch   interface{} = make(chan bool, 1)
+)
+
+func main() {
+	var fail bool
+	for i, test := range efaces {
+		s := fmt.Sprintf("%[1]T %[1]v", test.x)
+		if s != test.s {
+			fmt.Printf("eface(%d)=%q want %q\n", i, s, test.s)
+			fail = true
+		}
+	}
+
+	for i, test := range ifaces {
+		s := fmt.Sprintf("%[1]T %#[1]v %[1]s", test.x)
+		if s != test.s {
+			fmt.Printf("iface(%d)=%q want %q\n", i, s, test.s)
+			fail = true
+		}
+	}
+
+	if got := *(iptr.(*int)); got != 1 {
+		fmt.Printf("bad int ptr %d\n", got)
+		fail = true
+	}
+
+	f.(func())()
+	f.(func())()
+	f.(func())()
+	if clos != 3 {
+		fmt.Printf("bad closure exec %d\n", clos)
+		fail = true
+	}
+
+	if !reflect.DeepEqual(*(deep.([1]struct{ a *[2]byte })[0].a), [2]byte{'z', 'w'}) {
+		fmt.Printf("bad deep directiface\n")
+		fail = true
+	}
+
+	cc := ch.(chan bool)
+	cc <- true
+	if got := <-cc; !got {
+		fmt.Printf("bad chan\n")
+		fail = true
+	}
+
+	if fail {
+		fmt.Println("BUG")
+		os.Exit(1)
+	}
+}