File size: 1,213 Bytes
e36aeda | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | // 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")
}
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