You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: funcdata_go116.go
    path of file: ./repos/gotosocial/vendor/github.com/bytedance/sonic/loader
    
    the code of the file until where you have to start completion: //go:build go1.16 && !go1.18
// +build go1.16,!go1.18

/*
 * Copyright 2021 ByteDance Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package loader

import (
   `os`
   `unsafe`
   `sort`

   `github.com/bytedance/sonic/internal/rt`
)

const (
    _Magic uint32 = 0xfffffffa
)

type pcHeader struct {
    magic          uint32  // 0xFFFFFFF0
    pad1, pad2     uint8   // 0,0
    minLC          uint8   // min instruction size
    ptrSize        uint8   // size of a ptr in bytes
    nfunc          int     // number of functions in the module
    nfiles         uint    // number of entries in the file tab
    funcnameOffset uintptr // offset to the funcnametab variable from pcHeader
    cuOffset       uintptr // offset 
    
func makePctab(funcs []Func, addr uintptr, cuOffset uint32, nameOffset []int32) (pctab []byte, pcdataOffs [][]uint32, _funcs []_func) {
    _funcs = make([]_func, len(funcs))

    // Pctab offsets of 0 are considered invalid in the runtime. We respect
    // that by just padding a single byte at the beginning of runtime.pctab,
    // that way no real offsets can be zero.
    pctab = make([]byte, 1, 12*len(funcs)+1)
    pcdataOffs = make([][]uint32, len(funcs))

    for i, f := range funcs {
        _f := &_funcs[i]

        var writer = func(pc *Pcdata) {
            var ab []byte
            var err error
            if pc != nil {
                ab, err = pc.MarshalBinary()
                if err != nil {
                    panic(err)
                }
                pcdataOffs[i] = append(pcdataOffs[i], uint32(len(pctab)))
            } else {
                ab = []byte{0}
                pcdataOffs[i] = append(pcdataOffs[i], _PCDATA_INVALID_OFFSET)
            }
            pctab = append(pctab, ab...)
        }

        if f.Pcsp != nil {
            _f.pcsp = uint32(len(pctab))
        }
        writer(f.Pcsp)
        if f.Pcfile != nil {
            _f.pcfile = uint32(len(pctab))
        }
        writer(f.Pcfile)
        if f.Pcline != nil {
            _f.pcln = uint32(len(pctab))
        }
        writer(f.Pcline)
        writer(f.PcUnsafePoint)
        writer(f.PcStackMapIndex)
        writer(f.PcInlTreeIndex)
        writer(f.PcArgLiveIndex)
        
        _f.entry = addr + uintptr(f.EntryOff)
        _f.nameOff = nameOffset[i]
        _f.args = f.ArgsSize
        _f.deferreturn = f.DeferReturn
        // NOTICE: _func.pcdata is always as [PCDATA_UnsafePoint(0) : PCDATA_ArgLiveIndex(3)]
        _f.npcdata = uint32(_N_PCDATA)
        _f.cuOffset = cuOffset
        _f.funcID = f.ID
        _f.nfuncdata = uint8(_N_FUNCDATA)
    }

    return
}