}

	noParens := func(r rune) rune {
		if r == '(' || r == ')' {
			return -1
		}
		return r
	}

	for _, marked := range nextStdChunkTests {
		// marked is an expected output from markChunks.
		// If we delete the parens and pass it through markChunks,
		// we should get the original back.
		format := strings.Map(noParens, marked)
		out := markChunks(format)
		if out != marked {

			// the session ticket. See RFC 5077, Section 3.2.
			//
			// RFC 8446 makes no mention of dropping tickets on failure, but it
			// does require servers to abort on invalid binders, so we need to
			// delete tickets to recover from a corrupted PSK.
			if err != nil {
				if cacheKey := c.clientSessionCacheKey(); cacheKey != "" {
					c.config.ClientSessionCache.Put(cacheKey, nil)
				}
			}
		}()
	}

	p.prefixes = append(p.prefixes, prefix)

	return prefix
}

// deleteAttrPrefix removes an attribute name space prefix.
func (p *printer) deleteAttrPrefix(prefix string) {
	delete(p.attrPrefix, p.attrNS[prefix])
	delete(p.attrNS, prefix)
}

func (p *printer) markPrefix() {
	p.prefixes = append(p.prefixes, "")
}

func (p *printer) popPrefix() {
	for len(p.prefixes) > 0 {

	//
	// Example:
	//  var _ = complex(float32(1), float64(2))
	InvalidComplex

	// InvalidDelete occurs when the delete built-in function is called with a
	// first argument that is not a map.
	//
	// Example:
	//  func f() {
	//  	m := "hello"
	//  	delete(m, "e")
	//  }
	InvalidDelete

	// InvalidImag occurs when the imag built-in function is called with an

	procs.Lock()
	ch := procs.waits[pid]
	procs.Unlock()

	var wmsg *waitErr
	if ch != nil {
		wmsg = <-ch
		procs.Lock()
		if procs.waits[pid] == ch {
			delete(procs.waits, pid)
		}
		procs.Unlock()
	}
	if wmsg == nil {
		// ch was missing or ch is closed
		return NewError("process not found")
	}
	if wmsg.err != nil {
		return wmsg.err
	}

		canDashC = false
	case "1":
		canDashC = true
	case "":
		// Not set. Use default.
	default:
		log.Fatalf("GO19CONCURRENTCOMPILATION must be 0, 1, or unset, got %q", e)
	}

	// TODO: Test and delete these conditions.
	if cfg.ExperimentErr != nil || cfg.Experiment.FieldTrack || cfg.Experiment.PreemptibleLoops {
		canDashC = false
	}

	if !canDashC {
		return 1
	}

	alias.typ = Typ[Invalid]
}

// validAlias records that alias has the valid type typ (possibly Typ[Invalid]).
func (check *Checker) validAlias(alias *TypeName, typ Type) {
	assert(!check.conf._EnableAlias)
	delete(check.brokenAliases, alias)
	alias.typ = typ
}

// isBrokenAlias reports whether alias doesn't have a determined type yet.
func (check *Checker) isBrokenAlias(alias *TypeName) bool {

	// Checker.resolveBaseTypeName ensures that obj is not an alias name
	// if it has attached methods.)
	methods := check.methods[obj]
	if methods == nil {
		return
	}
	delete(check.methods, obj)
	assert(!check.objMap[obj].tdecl.Alias) // don't use TypeName.IsAlias (requires fully set up object)

	// use an objset to check for name conflicts
	var mset objset

	// because state.vars has been reset by the preceding state.startBlock.
	// They only enforce the fact that these variables are no longer need in
	// the current scope.
	delete(s.vars, ptrVar)
	delete(s.vars, lenVar)
	if !inplace {
		delete(s.vars, capVar)
	}

	// make result
	if inplace {
		return nil
	}
	return s.newValue3(ssa.OpSliceMake, n.Type(), p, l, c)
}

	}

	return b
}

var builderWorkDirs sync.Map // *Builder → WorkDir

func (b *Builder) Close() error {
	wd, ok := builderWorkDirs.Load(b)
	if !ok {
		return nil
	}
	defer builderWorkDirs.Delete(b)

	if b.WorkDir != wd.(string) {
		base.Errorf("go: internal error: Builder WorkDir unexpectedly changed from %s to %s", wd, b.WorkDir)
	}

	if !cfg.BuildWork {