libgo: update to Go1.13

    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/194698

From-SVN: r275691

3 files changed, 40 insertions, 0 deletions

diff --git a/libgo/misc/cgo/testshared/shared_test.go b/libgo/misc/cgo/testshared/shared_test.go
index ac1a1c7..9d16338 100644
--- a/libgo/misc/cgo/testshared/shared_test.go
+++ b/libgo/misc/cgo/testshared/shared_test.go
@@ -941,3 +941,10 @@ func TestTestInstalledShared(t *testing.T) {
 func TestGeneratedMethod(t *testing.T) {
 	goCmd(t, "install", "-buildmode=shared", "-linkshared", "./issue25065")
 }
+
+// Test use of shared library struct with generated hash function.
+// Issue 30768.
+func TestGeneratedHash(t *testing.T) {
+	goCmd(nil, "install", "-buildmode=shared", "-linkshared", "./issue30768/issue30768lib")
+	goCmd(nil, "test", "-linkshared", "./issue30768")
+}
diff --git a/libgo/misc/cgo/testshared/testdata/issue30768/issue30768lib/lib.go b/libgo/misc/cgo/testshared/testdata/issue30768/issue30768lib/lib.go
new file mode 100644
index 0000000..9e45ebe
--- /dev/null
+++ b/libgo/misc/cgo/testshared/testdata/issue30768/issue30768lib/lib.go
@@ -0,0 +1,11 @@
+// Copyright 2019 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 issue30768lib
+
+// S is a struct that requires a generated hash function.
+type S struct {
+	A string
+	B int
+}
diff --git a/libgo/misc/cgo/testshared/testdata/issue30768/x_test.go b/libgo/misc/cgo/testshared/testdata/issue30768/x_test.go
new file mode 100644
index 0000000..1bbd139
--- /dev/null
+++ b/libgo/misc/cgo/testshared/testdata/issue30768/x_test.go
@@ -0,0 +1,22 @@
+// Copyright 2019 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 issue30768_test
+
+import (
+	"testing"
+
+	"testshared/issue30768/issue30768lib"
+)
+
+type s struct {
+	s issue30768lib.S
+}
+
+func Test30768(t *testing.T) {
+	// Calling t.Log will convert S to an empty interface,
+	// which will force a reference to the generated hash function,
+	// defined in the shared library.
+	t.Log(s{})
+}