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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: go_test.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/objabi"
	"internal/testenv"
	"io/ioutil"
	"os/exec"
	"path/filepath"
	"reflect"
	"runtime"
	"testing"
)

func TestDedupLibraries(t *testing.T) {
	ctxt := &Link{}
	ctxt.Target.HeadType = objabi.Hlinux

libs := []string{"libc.so", "libc.so.6"}

got := dedupLibraries(ctxt, libs)
	if !reflect.DeepEqual(got, libs) {
		t.Errorf("dedupLibraries(%v) = %v, want %v", libs, got, libs)
	}
}

func TestDedupLibrariesOpenBSD(t *testing.T) {
	ctxt := &Link{}
	ctxt.Target.HeadType = objabi.Hopenbsd

tests := []struct {
		libs []string
		want []string
	}{
		{
			libs: []string{"libc.so"},
			want: []string{"libc.so"},
		},
		{
			libs: []string{"libc.so", "libc.so.96.1"},
			want: []string{"libc.so.96.1"},
		},
		{
			libs: []string{"libc.so.96.1", "libc.so"},
			want: []string{"libc.so.96.1"},
		},
		{
			libs: []string{"libc.a", "libc.so.96.1"},
			want: []string{"libc.a", "libc.so.96.1"},
		},
		{
			libs: []string{"libpthread.so", "libc.so"},
			want: []string{"libc.so", "libpthread.so"},
		},
		{
			libs: []string{"libpthread.so.26.1", "libpthread.so", "libc.so.96.1", "libc.so"},
			want: []string{"libc.so.96.1", "libpthread.so.26.1"},
		},
		{
			libs: []string{"libpthread.so.26.1", "libpthread.so", "libc.so.96.1", "libc.so", "libfoo.so"},
			want: []string{"libc.so.96.1", "libfoo.so", "libpthread.so.26.1"},
		},
	}

for _, test := range tests {
		t.Run("dedup", func(t *testing.T) {
			got := dedupLibraries(ctxt, test.libs)
			if !reflect.DeepEqual(got, test.want) {
				t.Errorf("dedupLibraries(%v) = %v, want %v", test.libs, got, test.want)
			}
		})
	}
}

func TestDedupLibrariesOpenBSDLink(t *testing.T) {
	// The behavior we're checking for is of interest only on OpenBSD.
	if runtime.GOOS != "openbsd" {
		t.Skip("test only useful on openbsd")
	}

testenv.MustHaveGoBuild(t)
	testenv.MustHaveCGO(t)
	t.Parallel()

dir := t.TempDir()

// cgo_import_dynamic both the unversioned libraries and pull in the
	// net package to get a cgo package with a versioned library.
	srcFile := filepath.Join(dir, "x.go")
	src := `package main

import (
	_ "net"
)

//go:cgo_import_dynamic _ _ "libc.so"

func main() {}`
	if err := ioutil.WriteFile(srcFile, []byte(src), 0644); err != nil {
		t.Fatal(err)
	}

exe := filepath.Join(dir, "deduped.exe")
	out, err := exec.Command(testenv.GoToolPath(t), "build", "-o", exe, srcFile).CombinedOutput()
	if err != nil {
		t.Fatalf("build failure: %s\n%s\n", err, string(out))
	}

// Result should be runnable.
	if _, err = exec.Command(exe).CombinedOutput(); err != nil {
		t.Fatal(err)
	}
}

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Editing: go_test.go

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