libgo: update to go1.9

    
    Reviewed-on: https://go-review.googlesource.com/63753

From-SVN: r252767

1 files changed, 19 insertions, 0 deletions

diff --git a/libgo/go/runtime/export_unix_test.go b/libgo/go/runtime/export_unix_test.go
new file mode 100644
index 00000000000..54d577072ec
--- /dev/null
+++ b/libgo/go/runtime/export_unix_test.go
@@ -0,0 +1,19 @@
+// Copyright 2017 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.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package runtime
+
+func sigismember(mask *sigset, i int) bool {
+	clear := *mask
+	sigdelset(&clear, i)
+	return clear != *mask
+}
+
+func Sigisblocked(i int) bool {
+	var sigmask sigset
+	sigprocmask(_SIG_SETMASK, nil, &sigmask)
+	return sigismember(&sigmask, i)
+}