libgo: update to Go1.14rc1 release

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/218017

1 files changed, 50 insertions, 0 deletions

diff --git a/libgo/go/runtime/checkptr_test.go b/libgo/go/runtime/checkptr_test.go
new file mode 100644
index 00000000000..ab3058f7336
--- /dev/null
+++ b/libgo/go/runtime/checkptr_test.go
@@ -0,0 +1,50 @@
+// Copyright 2020 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 runtime_test
+
+import (
+	"internal/testenv"
+	"os/exec"
+	"runtime"
+	"strings"
+	"testing"
+)
+
+func TestCheckPtr(t *testing.T) {
+	if runtime.Compiler == "gccgo" {
+		t.Skip("gccgo does not have -d=checkptr")
+	}
+	t.Parallel()
+	testenv.MustHaveGoRun(t)
+
+	exe, err := buildTestProg(t, "testprog", "-gcflags=all=-d=checkptr=1")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	testCases := []struct {
+		cmd  string
+		want string
+	}{
+		{"CheckPtrAlignment", "fatal error: checkptr: unsafe pointer conversion\n"},
+		{"CheckPtrArithmetic", "fatal error: checkptr: unsafe pointer arithmetic\n"},
+		{"CheckPtrSize", "fatal error: checkptr: unsafe pointer conversion\n"},
+		{"CheckPtrSmall", "fatal error: checkptr: unsafe pointer arithmetic\n"},
+	}
+
+	for _, tc := range testCases {
+		tc := tc
+		t.Run(tc.cmd, func(t *testing.T) {
+			t.Parallel()
+			got, err := testenv.CleanCmdEnv(exec.Command(exe, tc.cmd)).CombinedOutput()
+			if err != nil {
+				t.Log(err)
+			}
+			if !strings.HasPrefix(string(got), tc.want) {
+				t.Errorf("output:\n%s\n\nwant output starting with: %s", got, tc.want)
+			}
+		})
+	}
+}