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opt / golang / 1.19.4 / src / cmd / link / internal / ld /

📁 ..
📄 ar.go(5.38 KB)
📄 asmb.go(5.21 KB)
📄 config.go(7.54 KB)
📄 data.go(89.78 KB)
📄 data_test.go(2.32 KB)
📄 deadcode.go(15.66 KB)
📄 deadcode_test.go(1.34 KB)
📄 decodesym.go(9.98 KB)
📄 dwarf.go(72.83 KB)
📄 dwarf_test.go(46.02 KB)
📄 elf.go(59.18 KB)
📄 elf_test.go(2.75 KB)
📄 errors.go(1.91 KB)
📄 execarchive.go(901 B)
📄 execarchive_noexec.go(343 B)
📄 fallocate_test.go(1.64 KB)
📄 go.go(11.84 KB)
📄 go_test.go(2.68 KB)
📄 heap.go(960 B)
📄 heap_test.go(1.87 KB)
📄 issue33808_test.go(792 B)
📄 ld.go(8.08 KB)
📄 ld_test.go(8.16 KB)
📄 lib.go(76.84 KB)
📄 link.go(5.13 KB)
📄 macho.go(43.02 KB)
📄 macho_combine_dwarf.go(13.11 KB)
📄 main.go(14.01 KB)
📄 nooptcgolink_test.go(738 B)
📄 outbuf.go(8.05 KB)
📄 outbuf_darwin.go(1.48 KB)
📄 outbuf_linux.go(304 B)
📄 outbuf_mmap.go(1.51 KB)
📄 outbuf_nofallocate.go(342 B)
📄 outbuf_nommap.go(805 B)
📄 outbuf_notdarwin.go(292 B)
📄 outbuf_test.go(2.21 KB)
📄 outbuf_windows.go(2.28 KB)
📄 pcln.go(28.96 KB)
📄 pe.go(45.98 KB)
📄 stackcheck.go(11.86 KB)
📄 stackcheck_test.go(2.26 KB)
📄 sym.go(3.89 KB)
📄 symtab.go(29.49 KB)
📄 target.go(3.77 KB)
📁 testdata
📄 typelink.go(1.87 KB)
📄 util.go(2.46 KB)
📄 xcoff.go(51.88 KB)

Editing: errors.go

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package ld

import (
	"cmd/internal/obj"
	"cmd/link/internal/loader"
	"cmd/link/internal/sym"
	"sync"
)

type unresolvedSymKey struct {
	from loader.Sym // Symbol that referenced unresolved "to"
	to   loader.Sym // Unresolved symbol referenced by "from"
}

type symNameFn func(s loader.Sym) string

// ErrorReporter is used to make error reporting thread safe.
type ErrorReporter struct {
	loader.ErrorReporter
	unresOnce  sync.Once
	unresSyms  map[unresolvedSymKey]bool
	unresMutex sync.Mutex
	SymName    symNameFn
}

// errorUnresolved prints unresolved symbol error for rs that is referenced from s.
func (reporter *ErrorReporter) errorUnresolved(ldr *loader.Loader, s, rs loader.Sym) {
	reporter.unresOnce.Do(func() { reporter.unresSyms = make(map[unresolvedSymKey]bool) })

k := unresolvedSymKey{from: s, to: rs}
	reporter.unresMutex.Lock()
	defer reporter.unresMutex.Unlock()
	if !reporter.unresSyms[k] {
		reporter.unresSyms[k] = true
		name := ldr.SymName(rs)

// Try to find symbol under another ABI.
		var reqABI, haveABI obj.ABI
		haveABI = ^obj.ABI(0)
		reqABI, ok := sym.VersionToABI(ldr.SymVersion(rs))
		if ok {
			for abi := obj.ABI(0); abi < obj.ABICount; abi++ {
				v := sym.ABIToVersion(abi)
				if v == -1 {
					continue
				}
				if rs1 := ldr.Lookup(name, v); rs1 != 0 && ldr.SymType(rs1) != sym.Sxxx && ldr.SymType(rs1) != sym.SXREF {
					haveABI = abi
				}
			}
		}

// Give a special error message for main symbol (see #24809).
		if name == "main.main" {
			reporter.Errorf(s, "function main is undeclared in the main package")
		} else if haveABI != ^obj.ABI(0) {
			reporter.Errorf(s, "relocation target %s not defined for %s (but is defined for %s)", name, reqABI, haveABI)
		} else {
			reporter.Errorf(s, "relocation target %s not defined", name)
		}
	}
}

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Editing: errors.go

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