package runtime_test

import (
	"runtime/internal/startlinetest"
	"testing"
)

// TestStartLineAsm tests the start line metadata of an assembly function. This
// is only tested on amd64 to avoid the need for a proliferation of per-arch
// copies of this function.
func TestStartLineAsm(t *testing.T) {
	startlinetest.CallerStartLine = callerStartLine

	const wantLine = 23
	got := startlinetest.AsmFunc()

// Copyright 2022 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 startlinetest contains helpers for runtime_test.TestStartLineAsm.
package startlinetest

// Defined in func_amd64.s, this is a trivial assembly function that calls
// runtime_test.callerStartLine.
func AsmFunc() int

// Provided by runtime_test.

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

#include "funcdata.h"
#include "textflag.h"

// Assembly function for runtime_test.TestStartLineAsm.
//
// Note that this file can't be built directly as part of runtime_test, as assembly
// files can't declare an alternative package. Building it into runtime is
// possible, but linkshared complicates things:
//