// runTestActor is the actor for running a test.
type runTestActor struct {
	c runCache

	// writeCoverMetaAct points to the pseudo-action for collecting
	// coverage meta-data files for selected -cover test runs. See the
	// comment in runTest at the definition of writeCoverMetaAct for
	// more details.
	writeCoverMetaAct *work.Action

	// sequencing of json start messages, to preserve test order

			expr = &ast.CallExpr{Fun: expr}
		}
	case ctxSelector:
		if r.Name.Kind == "var" {
			expr = &ast.StarExpr{Star: (*r.Expr).Pos(), X: expr}
		} else {
			error_(r.Pos(), "only C variables allowed in selector expression %s", fixGo(r.Name.Go))
		}
	case ctxType:
		if r.Name.Kind != "type" {
			error_(r.Pos(), "expression C.%s used as type", fixGo(r.Name.Go))
		} else if r.Name.Type == nil {