//
//	$ go build
//	# fmt
//	/usr/gopher/go/src/fmt/print.go:1090: undefined: asdf
//	$
//
// reportCmd also replaces references to the work directory with $WORK, replaces
// cgo file paths with the original file path, and replaces cgo-mangled names
// with "C.name".
//
// desc is optional. If "", a.Package.Desc() is used.
//
// dir is optional. If "", a.Package.Dir is used.

	}

	// Set the controlling TTY to Ctty
	if sys.Setctty {
		_, _, err1 = RawSyscall(SYS_IOCTL, uintptr(sys.Ctty), uintptr(TIOCSCTTY), 1)
		if err1 != 0 {
			goto childerror
		}
	}

	// Restore original rlimit.
	if rlim != nil {
		rawSetrlimit(RLIMIT_NOFILE, rlim)
	}

	// Enable tracing if requested.
	// Do this right before exec so that we don't unnecessarily trace the runtime

// It is up to fn to arrange for that later execution, typically by recording
// g in a data structure, causing something to call ready(g) later.
// mcall returns to the original goroutine g later, when g has been rescheduled.
// fn must not return at all; typically it ends by calling schedule, to let the m
// run other goroutines.
//
// mcall can only be called from g stacks (not g0, not gsignal).

// Demangle attempts to demangle and optionally simplify any function
// names referenced in the profile. It works on a best-effort basis:
// it will silently preserve the original names in case of any errors.
func (p *Profile) Demangle(d Demangler) error {
	// Collect names to demangle.
	var names []string
	for _, fn := range p.Function {
		names = append(names, fn.SystemName)
	}

flag and otherwise keep the signal handler. If Notify is called for an
asynchronous signal, a Go signal handler will be installed for that
signal. If, later, Reset is called for that signal, the original
handling for that signal will be reinstalled, restoring the non-Go
signal handler if any.

Go code built without -buildmode=c-archive or -buildmode=c-shared will

	if level > 0 {
		goroutineheader(gp)
		tracebacktrap(c.sigpc(), c.sigsp(), c.siglr(), gp)
		if crashing.Load() > 0 && gp != mp.curg && mp.curg != nil && readgstatus(mp.curg)&^_Gscan == _Grunning {
			// tracebackothers on original m skipped this one; trace it now.
			goroutineheader(mp.curg)
			traceback(^uintptr(0), ^uintptr(0), 0, mp.curg)
		} else if crashing.Load() == 0 {
			tracebackothers(gp)
			print("\n")
		}
		dumpregs(c)

	Plain
	i int // position in input where bracket is
}

type emphPlain struct {
	Plain
	canOpen  bool
	canClose bool
	i        int // position in output where emph is
	n        int // length of original span
}

type Escaped struct {
	Plain
}

func (x *Escaped) printMarkdown(buf *bytes.Buffer) {
	buf.WriteByte('\\')
	x.Plain.printMarkdown(buf)
}

type Code struct {
	Text string

}

func testShiftFunc(t *testing.T, f func(z, x []Word, s uint) Word, a argVU) {
	// work on copy of a.d to preserve the original data.
	b := make([]Word, len(a.d))
	copy(b, a.d)
	z := b[a.zp : a.zp+a.l]
	x := b[a.xp : a.xp+a.l]
	c := f(z, x, a.s)
	for i, zi := range z {
		if zi != a.r[i] {

	if err == nil {
		return word, true, nil
	}

	// If the error came from the character set reader
	// (meaning the character set itself is invalid
	// but the decoding worked fine until then),
	// return the original text and the error,
	// with isEncoded=true.
	if charsetReaderError {
		return s, true, err
	}

	// Ignore invalid RFC 2047 encoded-word errors.
	return s, false, nil
}

			t.Errorf("[%d] %q comparison: %v", i, v.call, err)
		}
	}
}

// TestAllThreadsSyscallError verifies that errors are properly returned when
// the syscall fails on the original thread.
func TestAllThreadsSyscallError(t *testing.T) {
	// SYS_CAPGET takes pointers as the first two arguments. Since we pass
	// 0, we expect to get EFAULT back.