1 files changed, 53 insertions, 0 deletions
diff --git a/src/cmd/cgo/internal/testsanitizers/testdata/tsan14.go b/src/cmd/cgo/internal/testsanitizers/testdata/tsan14.go
new file mode 100644
index 0000000000..d594ffb5c0
--- /dev/null
+++ b/src/cmd/cgo/internal/testsanitizers/testdata/tsan14.go
@@ -0,0 +1,53 @@
+// Copyright 2023 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 failed when run under the C/C++ ThreadSanitizer.
+//
+// cgocallback on a new thread calls into runtime.needm -> _cgo_getstackbound
+// to update gp.stack.lo with the stack bounds. If the G itself is passed to
+// _cgo_getstackbound, then writes to the same G can be seen on multiple
+// threads (when the G is reused after thread exit). This would trigger TSAN.
+
+/*
+#include <pthread.h>
+
+void go_callback();
+
+static void *thr(void *arg) {
+    go_callback();
+    return 0;
+}
+
+static void foo() {
+    pthread_t th;
+    pthread_attr_t attr;
+    pthread_attr_init(&attr);
+    pthread_attr_setstacksize(&attr, 256 << 10);
+    pthread_create(&th, &attr, thr, 0);
+    pthread_join(th, 0);
+}
+*/
+import "C"
+
+import (
+	"time"
+)
+
+//export go_callback
+func go_callback() {
+}
+
+func main() {
+	for i := 0; i < 2; i++ {
+		go func() {
+			for {
+				C.foo()
+			}
+		}()
+	}
+
+	time.Sleep(1000*time.Millisecond)
+}