func (a *llvmSymbolizerJob) close() {
	a.in.Close()
	a.cmd.Wait()
}

// newLLVMSymbolizer starts the given llvmSymbolizer command reporting
// information about the given executable file. If file is a shared
// library, base should be the address at which it was mapped in the
// program under consideration.
func newLLVMSymbolizer(cmd, file string, base uint64, isData bool) (*llvmSymbolizer, error) {
	if cmd == "" {

	}
	if f.addr2liner != nil {
		return f.addr2liner.addrInfo(addr)
	}
	return nil, fmt.Errorf("could not find local addr2liner")
}

func (f *fileAddr2Line) init() {
	if llvmSymbolizer, err := newLLVMSymbolizer(f.b.llvmSymbolizer, f.name, f.base, f.isData); err == nil {
		f.llvmSymbolizer = llvmSymbolizer
		return
	}

	if addr2liner, err := newAddr2Liner(f.b.addr2line, f.name, f.base); err == nil {