3 files changed, 116 insertions, 0 deletions
diff --git a/src/runtime/testdata/testprogcgo/trace.go b/src/runtime/testdata/testprogcgo/trace.go
new file mode 100644
index 0000000000..875434b1f1
--- /dev/null
+++ b/src/runtime/testdata/testprogcgo/trace.go
@@ -0,0 +1,60 @@
+// 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
+
+/*
+// Defined in trace_*.c.
+void cCalledFromGo(void);
+*/
+import "C"
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"runtime/trace"
+)
+
+func init() {
+	register("Trace", Trace)
+}
+
+// Trace is used by TestTraceUnwindCGO.
+func Trace() {
+	file, err := os.CreateTemp("", "testprogcgo_trace")
+	if err != nil {
+		log.Fatalf("failed to create temp file: %s", err)
+	}
+	defer file.Close()
+
+	if err := trace.Start(file); err != nil {
+		log.Fatal(err)
+	}
+	defer trace.Stop()
+
+	goCalledFromGo()
+	<-goCalledFromCThreadChan
+
+	fmt.Printf("trace path:%s", file.Name())
+}
+
+// goCalledFromGo calls cCalledFromGo which calls back into goCalledFromC and
+// goCalledFromCThread.
+func goCalledFromGo() {
+	C.cCalledFromGo()
+}
+
+//export goCalledFromC
+func goCalledFromC() {
+	trace.Log(context.Background(), "goCalledFromC", "")
+}
+
+var goCalledFromCThreadChan = make(chan struct{})
+
+//export goCalledFromCThread
+func goCalledFromCThread() {
+	trace.Log(context.Background(), "goCalledFromCThread", "")
+	close(goCalledFromCThreadChan)
+}
diff --git a/src/runtime/testdata/testprogcgo/trace_unix.c b/src/runtime/testdata/testprogcgo/trace_unix.c
new file mode 100644
index 0000000000..0fa55c7215
--- /dev/null
+++ b/src/runtime/testdata/testprogcgo/trace_unix.c
@@ -0,0 +1,27 @@
+// 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.
+
+//go:build unix
+
+// The unix C definitions for trace.go. That file uses //export so
+// it can't put function definitions in the "C" import comment.
+
+#include <pthread.h>
+#include <assert.h>
+
+extern void goCalledFromC(void);
+extern void goCalledFromCThread(void);
+
+static void* cCalledFromCThread(void *p) {
+	goCalledFromCThread();
+	return NULL;
+}
+
+void cCalledFromGo(void) {
+	goCalledFromC();
+
+	pthread_t thread;
+	assert(pthread_create(&thread, NULL, cCalledFromCThread, NULL) == 0);
+	assert(pthread_join(thread, NULL) == 0);
+}
diff --git a/src/runtime/testdata/testprogcgo/trace_windows.c b/src/runtime/testdata/testprogcgo/trace_windows.c
new file mode 100644
index 0000000000..77580547ab
--- /dev/null
+++ b/src/runtime/testdata/testprogcgo/trace_windows.c
@@ -0,0 +1,29 @@
+// 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.
+
+// The windows C definitions for trace.go. That file uses //export so
+// it can't put function definitions in the "C" import comment.
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <process.h>
+#include "_cgo_export.h"
+
+extern void goCalledFromC(void);
+extern void goCalledFromCThread(void);
+
+__stdcall
+static unsigned int cCalledFromCThread(void *p) {
+	goCalledFromCThread();
+	return 0;
+}
+
+void cCalledFromGo(void) {
+	goCalledFromC();
+
+	uintptr_t thread;
+	thread = _beginthreadex(NULL, 0, cCalledFromCThread, NULL, 0, NULL);
+	WaitForSingleObject((HANDLE)thread, INFINITE);
+	CloseHandle((HANDLE)thread);
+}