}

	pos := p.expect(token.GO)
	call := p.parseCallExpr()
	p.expectSemi()
	if call == nil {
		return &ast.BadStmt{pos, pos + 2} // len("go")
	}

	return &ast.GoStmt{pos, call}
}

func (p *parser) parseDeferStmt() ast.Stmt {
	if p.trace {
		defer un(trace(p, "DeferStmt"))
	}

	pos := p.expect(token.DEFER)
	call := p.parseCallExpr()
	p.expectSemi()
	if call == nil {

		s := &ast.IncDecStmt{X: x[0], TokPos: p.pos, Tok: p.tok}
		p.next()
		return s, false
	}

	// expression
	return &ast.ExprStmt{X: x[0]}, false
}

func (p *parser) parseCallExpr(callType string) *ast.CallExpr {
	x := p.parseRhs() // could be a conversion: (some type)(x)
	if t := ast.Unparen(x); t != x {
		p.error(x.Pos(), fmt.Sprintf("expression in %s must not be parenthesized", callType))