"compact_labels": "Show minimal headers",
	"source_path":    "Search path for source files",
	"trim_path":      "Path to trim from source paths before search",
	"intel_syntax": helpText(
		"Show assembly in Intel syntax",
		"Only applicable to commands `disasm` and `weblist`"),

	// Filtering options
	"nodecount": helpText(
		"Max number of nodes to show",

func ExampleAfterFunc_connection() {
	readFromConn := func(ctx context.Context, conn net.Conn, b []byte) (n int, err error) {
		stopc := make(chan struct{})
		stop := context.AfterFunc(ctx, func() {
			conn.SetReadDeadline(time.Now())
			close(stopc)
		})
		n, err = conn.Read(b)
		if !stop() {
			// The AfterFunc was started.
			// Wait for it to complete, and reset the Conn's deadline.
			<-stopc
			conn.SetReadDeadline(time.Time{})

	flagSet.BoolVar(&unexported, "u", false, "show unexported symbols as well as exported")
	flagSet.BoolVar(&matchCase, "c", false, "symbol matching honors case (paths not affected)")
	flagSet.BoolVar(&showAll, "all", false, "show all documentation for package")
	flagSet.BoolVar(&showCmd, "cmd", false, "show symbols with package docs even if package is a command")
	flagSet.BoolVar(&showSrc, "src", false, "show source code for symbol")

// it blocked for some reason.
func (gs *gState[R]) block(ts trace.Time, stack trace.Stack, reason string, ctx *traceContext) {
	gs.startBlockReason = reason
	gs.stop(ts, stack, ctx)
}

// stop indicates that the goroutine has stopped executing on a proc.
func (gs *gState[R]) stop(ts trace.Time, stack trace.Stack, ctx *traceContext) {
	// Emit the execution time slice.
	var stk int
	if gs.lastStopStack != trace.NoStack {

	fail := func() {
		var buf bytes.Buffer
		show := func(i int, lines []string) {
			for k := -2; k < 5; k++ {
				marker := ""
				if k == 0 {
					marker = "» "
				}
				if 0 <= i+k && i+k < len(lines) {
					fmt.Fprintf(&buf, "\t%s%s\n", marker, lines[i+k])
				}
			}
			if i >= len(lines) {
				// show marker after end of input
				fmt.Fprintf(&buf, "\t» \n")
			}
		}

package main

/*
#include <stdlib.h>
#include <stdio.h>

void test(int *a) {
	// Access Go pointer out of bounds.
	int c = a[5];        // BOOM
	// We shouldn't get here; asan should stop us first.
	printf("a[5]=%d\n", c);
}
*/
import "C"

func main() {
	cIntSlice := []C.int{200, 201, 203, 203, 204}
	C.test(&cIntSlice[0])

  int32_t * volatile q = (int32_t *)malloc(sizeof(int32_t) * n);
  memcpy(p, q, n * sizeof(*p));
  free(q);
}

void g(int32_t *p, int n) {
  if (p[4] != 1) {
    // We shouldn't get here; msan should stop us first.
    exit(0);
  }
}
*/
import "C"

import (
	"unsafe"
)

func main() {
	a := make([]int32, 10)
	C.f((*C.int32_t)(unsafe.Pointer(&a[0])), C.int(len(a)))
	a[3] = 1

	go func() {
		f()
		close(done)
	}()

	timer := time.NewTimer(quiescent)
	defer timer.Stop()
	select {
	case <-done:
		t.Fatalf("%s unexpectedly did not block", desc)
	case <-timer.C:
	}

	return func(t *testing.T) {
		logTimer := time.NewTimer(quiescent)
		defer logTimer.Stop()

		select {
		case <-logTimer.C:
			// We expect the operation to have unblocked by now,

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

package x509

import "internal/goos"

// Possible certificate files; stop after finding one.
var certFiles = []string{
	"/etc/ssl/certs/ca-certificates.crt",                // Debian/Ubuntu/Gentoo etc.
	"/etc/pki/tls/certs/ca-bundle.crt",                  // Fedora/RHEL 6

		// Filter out no-op events.
		return
	}
	if from.Executing() && !to.Executing() {
		if to == trace.GoWaiting {
			// Goroutine started blocking.
			gs.block(ev.Time(), ev.Stack(), st.Reason, ctx)
		} else {
			gs.stop(ev.Time(), ev.Stack(), ctx)
		}
	}
	if !from.Executing() && to.Executing() {
		start := ev.Time()
		if from == trace.GoUndetermined {
			// Back-date the event to the start of the trace.
			start = ctx.startTime