Adding upstream version 1.21.8.upstream/1.21.8

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

1 files changed, 40 insertions, 0 deletions

diff --git a/src/cmd/cgo/internal/test/sigprocmask.go b/src/cmd/cgo/internal/test/sigprocmask.go
new file mode 100644
index 0000000..6cc04d6
--- /dev/null
+++ b/src/cmd/cgo/internal/test/sigprocmask.go
@@ -0,0 +1,40 @@
+// Copyright 2015 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.
+
+//go:build !windows
+
+package cgotest
+
+/*
+#cgo CFLAGS: -pthread
+#cgo LDFLAGS: -pthread
+extern int RunSigThread();
+extern int CheckBlocked();
+*/
+import "C"
+import (
+	"os"
+	"os/signal"
+	"syscall"
+	"testing"
+)
+
+var blocked bool
+
+//export IntoGoAndBack
+func IntoGoAndBack() {
+	// Verify that SIGIO stays blocked on the C thread
+	// even when unblocked for signal.Notify().
+	signal.Notify(make(chan os.Signal), syscall.SIGIO)
+	blocked = C.CheckBlocked() != 0
+}
+
+func testSigprocmask(t *testing.T) {
+	if r := C.RunSigThread(); r != 0 {
+		t.Errorf("pthread_create/pthread_join failed: %d", r)
+	}
+	if !blocked {
+		t.Error("Go runtime unblocked SIGIO")
+	}
+}