package main

// This program will crash.
// We want to test unwinding from a cgo callback.

/*
void call_callback(void);
*/
import "C"

func init() {
	register("PanicCallback", PanicCallback)
}

//export panic_callback
func panic_callback() {
	var i *int
	*i = 42
}

func PanicCallback() {
	C.call_callback()

// Copyright 2018 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 will crash.
// We want to test unwinding from sigpanic into C code (without a C symbolizer).

/*
#cgo CFLAGS: -O0

char *pnil;

static int f1(void) {
	*pnil = 0;
	return 0;
}
*/
import "C"

func init() {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Issue 51401: bad inline info in generated interface method wrapper
// causes infinite loop in stack unwinding.

package main

import "runtime"

type Outer interface{ Inner }

type impl struct{}

func New() Outer { return &impl{} }

type Inner interface {
	DoStuff() error
}

	if runtime.GOARCH != "amd64" {
		t.Skip("skipping amd64-only test")
	}
	// This test checks that Win32 is able to retrieve
	// function metadata stored in the .pdata section
	// by the Go linker.
	// Win32 unwinding will fail if this test fails,
	// as RtlUnwindEx uses RtlLookupFunctionEntry internally.
	// If that's the case, don't bother investigating further,
	// first fix the .pdata generation.
	sehf1pc := abi.FuncPCABIInternal(sehf1)

//
// fpunwindExpand checks if pcBuf contains logical frames (which include inlined
// frames) or physical frames (produced by frame pointer unwinding) using a
// sentinel value in pcBuf[0]. Logical frames are simply returned without the
// sentinel. Physical frames are turned into logical frames via inline unwinding
// and by applying the skip value that's stored in pcBuf[0].
func fpunwindExpand(dst, pcBuf []uintptr) int {
	if len(pcBuf) == 0 {

        c->Rsp += 8;
#elif defined(_X86_)
        c->Eip = *(DWORD *)c->Esp;
        c->Esp += 4;
#else
        c->Pc = c->Lr;
#endif
#ifdef _ARM64_
        // TODO: remove when windows/arm64 supports SEH stack unwinding.
        return EXCEPTION_CONTINUE_EXECUTION;
#endif
    }
    return EXCEPTION_CONTINUE_SEARCH;
}
LONG WINAPI customContinueHandlder(struct _EXCEPTION_POINTERS *ExceptionInfo)
{

// However, when these expressions are inlined, we were constructing
// the function literal bodies with the inline-adjusted positions
// instead of the original (inline-free) positions, which could lead
// to infinite loops when unwinding the stack.

package main

import "runtime"

func assert[_ any]() {
	panic(0)
}

func Assert[To any]() func() {
	return assert[To]
}

type asserter[_ any] struct{}

			// even a time.Sleep or a channel).
			var buf [1024]byte
			buf[0]++
			for atomic.LoadInt32(&done) == 0 {
				runtime.Gosched()
			}
			atomic.StoreInt32(&done, 0)
			// Exit without unwinding stack barriers.
			runtime.Goexit()
		}()

		// Generate some garbage.
		x[i] = make([]byte, 1024*1024)

		// Give GC some time to install stack barriers in the G.
		time.Sleep(50 * time.Microsecond)

	c.set_sp(sp)
	*(*uint64)(unsafe.Pointer(uintptr(sp))) = c.lr()
	// Make sure a valid frame pointer is saved on the stack so that the
	// frame pointer checks in adjustframe are happy, if they're enabled.
	// Frame pointer unwinding won't visit the sigpanic frame, since
	// sigpanic will save the same frame pointer before calling into a panic
	// function.
	*(*uint64)(unsafe.Pointer(uintptr(sp - goarch.PtrSize))) = c.r29()

	pc := gp.sigpc

		for {
			frame, more := frames.Next()

			// Process this frame.
			//
			// To keep this example's output stable
			// even if there are changes in the testing package,
			// stop unwinding when we leave package runtime.
			if !strings.Contains(frame.File, "runtime/") {
				break
			}
			fmt.Printf("- more:%v | %s\n", more, frame.Function)