if err != nil {
		return Event{}, err
	}
	if spec.IsStack {
		len := int(args[1])
		for i := 0; i < len; i++ {
			// Each stack frame has four args: pc, func ID, file ID, line number.
			frame, err := r.readArgs(4)
			if err != nil {
				return Event{}, err
			}
			args = append(args, frame...)
		}
	}
	var data []byte
	if spec.HasData {
		data, err = r.readData()
		if err != nil {
			return Event{}, err
		}
	}

        this.classifiers = ImmutableList.copyOf(classifiers);
    }

    @Nullable
    @Override
    public StackTraceRelevance classify(StackTraceElement frame) {
        for (StackTraceClassifier classifier : classifiers) {
            StackTraceRelevance relevance = classifier.classify(frame);
            if (relevance != null) {
                return relevance;
            }
        }
        return null;
    }

	// Save callback register arguments R0-R7.
	// We do this at the top of the frame so they're contiguous with stack arguments.
	// The 7*8 setting up R14 looks like a bug but is not: the eighth word
	// is the space the assembler reserved for our caller's frame pointer,
	// but we are not called from Go so that space is ours to use,
	// and we must to be contiguous with the stack arguments.

				break
			}
			pcs = append(pcs, s)
		}
		frames := runtime.CallersFrames(pcs)
		line := 0
		for {
			frame, more := frames.Next()
			name := frame.Function
			if line == 0 {
				line = frame.Line
			}
			if name == function {
				allocStat := a[line]
				allocStat.bytes += r.AllocBytes
				allocStat.objects += r.AllocObjects
				a[line] = allocStat
			}
			if !more {
				break
			}

			<arg>"//A"</arg>
			<arg>"href"</arg>
		</postConstruct>
		<postConstruct name="put">
			<arg>"//AREA"</arg>
			<arg>"href"</arg>
		</postConstruct>
		<postConstruct name="put">
			<arg>"//FRAME"</arg>
			<arg>"src"</arg>
		</postConstruct>
		<postConstruct name="put">
			<arg>"//IFRAME"</arg>
			<arg>"src"</arg>
		</postConstruct>
		<postConstruct name="put">
			<arg>"//IMG"</arg>
			<arg>"src"</arg>

//export G1
func G1() {
	C.C2()
}

//export G2
func G2() {
	pc := make([]uintptr, 32)
	n := runtime.Callers(0, pc)
	cf := runtime.CallersFrames(pc[:n])
	var frames []runtime.Frame
	for {
		frame, more := cf.Next()
		frames = append(frames, frame)
		if !more {
			break
		}
	}

	want := []struct {
		function string
		line     int
	}{
		{"main.G2", 0},
		{"cFunction", 0x10200},
		{"cFunction", 0x200},

// run

// Copyright 2016 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.

// issue 17381: make sure leave function with non-empty frame
// saves link register, so that traceback will work.

package main

import (
	"runtime"
	"unsafe"
)

func main() {
	defer func() {
		if recover() == nil {
			panic("did not panic")
		}

	{"-O2"},
	{"-Osmall"},
	{"-W"},
	{"-Wall"},
	{"-Wp,-Dfoo=bar"},
	{"-Wp,-Ufoo"},
	{"-Wp,-Dfoo1"},
	{"-Wp,-Ufoo1"},
	{"-flto"},
	{"-fobjc-arc"},
	{"-fno-objc-arc"},
	{"-fomit-frame-pointer"},
	{"-fno-omit-frame-pointer"},
	{"-fpic"},
	{"-fno-pic"},
	{"-fPIC"},
	{"-fno-PIC"},
	{"-fpie"},
	{"-fno-pie"},
	{"-fPIE"},
	{"-fno-PIE"},
	{"-fsplit-stack"},
	{"-fno-split-stack"},
	{"-fstack-xxx"},

        when:
        processTask.call()

        then:
        def e = thrown(Throwable)
        def root = Throwables.getRootCause(e)
        root.message == errorMsg
        root.stackTrace.any { frame -> frame.className == throwingClass }
        !Throwables.getCausalChain(e).any { c -> c.class == InvocationTargetException.class }

        where:

			break
		}
		if p.Pos.Xlogue() == src.PosPrologueEnd {
			break
		}
	}
	if pushbp == nil {
		ctxt.Diag("missing frame pointer instruction: PUSHQ BP")
		return
	}

	// It must be followed by a MOVQ SP, BP.
	movbp := pushbp.Link
	if movbp == nil {
		ctxt.Diag("missing frame pointer instruction: MOVQ SP, BP")
		return
	}
	if !(movbp.As == AMOVQ && movbp.From.Type == obj.TYPE_REG && movbp.From.Reg == REG_SP &&