Adding upstream version 1.22.1.upstream/1.22.1

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

1 files changed, 31 insertions, 0 deletions

diff --git a/src/cmd/cgo/internal/testsanitizers/testdata/tsan10.go b/src/cmd/cgo/internal/testsanitizers/testdata/tsan10.go
new file mode 100644
index 0000000..a40f245
--- /dev/null
+++ b/src/cmd/cgo/internal/testsanitizers/testdata/tsan10.go
@@ -0,0 +1,31 @@
+// 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.
+
+package main
+
+// This program hung when run under the C/C++ ThreadSanitizer.
+// TSAN defers asynchronous signals until the signaled thread calls into libc.
+// Since the Go runtime makes direct futex syscalls, Go runtime threads could
+// run for an arbitrarily long time without triggering the libc interceptors.
+// See https://golang.org/issue/18717.
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+/*
+#cgo CFLAGS: -g -fsanitize=thread
+#cgo LDFLAGS: -g -fsanitize=thread
+*/
+import "C"
+
+func main() {
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, syscall.SIGUSR1)
+	defer signal.Stop(c)
+	syscall.Kill(syscall.Getpid(), syscall.SIGUSR1)
+	<-c
+}