1 files changed, 45 insertions, 0 deletions
diff --git a/src/runtime/testdata/testprog/setcgotraceback.go b/src/runtime/testdata/testprog/setcgotraceback.go
new file mode 100644
index 0000000000..de005027ec
--- /dev/null
+++ b/src/runtime/testdata/testprog/setcgotraceback.go
@@ -0,0 +1,45 @@
+// Copyright 2025 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
+
+import (
+	"fmt"
+	"internal/abi"
+	"runtime"
+	"unsafe"
+)
+
+func init() {
+	register("SetCgoTracebackNoCgo", SetCgoTracebackNoCgo)
+}
+
+func cgoTraceback() {
+	panic("unexpectedly reached cgo traceback function")
+}
+
+func cgoContext() {
+	panic("unexpectedly reached cgo context function")
+}
+
+func cgoSymbolizer() {
+	panic("unexpectedly reached cgo symbolizer function")
+}
+
+// SetCgoTraceback is a no-op in non-cgo binaries.
+func SetCgoTracebackNoCgo() {
+	traceback := unsafe.Pointer(abi.FuncPCABIInternal(cgoTraceback))
+	context := unsafe.Pointer(abi.FuncPCABIInternal(cgoContext))
+	symbolizer := unsafe.Pointer(abi.FuncPCABIInternal(cgoSymbolizer))
+	runtime.SetCgoTraceback(0, traceback, context, symbolizer)
+
+	// In a cgo binary, runtime.(*Frames).Next calls the cgo symbolizer for
+	// any non-Go frames. Pass in a bogus frame to verify that Next does
+	// not attempt to call the cgo symbolizer, which would crash in a
+	// non-cgo binary like this one.
+	frames := runtime.CallersFrames([]uintptr{0x12345678})
+	frames.Next()
+
+	fmt.Println("OK")
+}