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Current Path: /opt/golang/1.22.0/src/cmd/link/internal/ld

opt / golang / 1.22.0 / src / cmd / link / internal / ld /

📁 ..
📄 ar.go(7.15 KB)
📄 asmb.go(5.44 KB)
📄 config.go(5.64 KB)
📄 data.go(99.49 KB)
📄 data_test.go(2.27 KB)
📄 deadcode.go(18.8 KB)
📄 deadcode_test.go(1.69 KB)
📄 decodesym.go(10.12 KB)
📄 dwarf.go(72.42 KB)
📄 dwarf_test.go(48.49 KB)
📄 elf.go(63.2 KB)
📄 elf_test.go(4.18 KB)
📄 errors.go(1.89 KB)
📄 execarchive.go(876 B)
📄 execarchive_noexec.go(320 B)
📄 fallocate_test.go(1.69 KB)
📄 go.go(11.17 KB)
📄 go_test.go(2.67 KB)
📄 heap.go(1.89 KB)
📄 heap_test.go(1.87 KB)
📄 inittask.go(6.18 KB)
📄 issue33808_test.go(792 B)
📄 ld.go(7.98 KB)
📄 ld_test.go(10.34 KB)
📄 lib.go(86.45 KB)
📄 link.go(5.13 KB)
📄 macho.go(43.68 KB)
📄 macho_combine_dwarf.go(13.1 KB)
📄 main.go(15.99 KB)
📄 msync_darwin_libc.go(307 B)
📄 nooptcgolink_test.go(733 B)
📄 outbuf.go(8.05 KB)
📄 outbuf_darwin.go(1.35 KB)
📄 outbuf_freebsd.go(515 B)
📄 outbuf_linux.go(304 B)
📄 outbuf_mmap.go(1.46 KB)
📄 outbuf_nofallocate.go(301 B)
📄 outbuf_nommap.go(741 B)
📄 outbuf_notdarwin.go(236 B)
📄 outbuf_test.go(2.21 KB)
📄 outbuf_windows.go(2.31 KB)
📄 pcln.go(29.75 KB)
📄 pe.go(48.82 KB)
📄 seh.go(2.05 KB)
📄 stackcheck.go(11.88 KB)
📄 stackcheck_test.go(2.25 KB)
📄 sym.go(3.91 KB)
📄 symtab.go(29.17 KB)
📄 target.go(3.86 KB)
📁 testdata
📄 typelink.go(1.87 KB)
📄 util.go(2.5 KB)
📄 xcoff.go(51.76 KB)

Editing: deadcode_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 (
	"bytes"
	"internal/testenv"
	"path/filepath"
	"testing"
)

func TestDeadcode(t *testing.T) {
	testenv.MustHaveGoBuild(t)
	t.Parallel()

tmpdir := t.TempDir()

tests := []struct {
		src      string
		pos, neg []string // positive and negative patterns
	}{
		{"reflectcall", nil, []string{"main.T.M"}},
		{"typedesc", nil, []string{"type:main.T"}},
		{"ifacemethod", nil, []string{"main.T.M"}},
		{"ifacemethod2", []string{"main.T.M"}, nil},
		{"ifacemethod3", []string{"main.S.M"}, nil},
		{"ifacemethod4", nil, []string{"main.T.M"}},
		{"ifacemethod5", []string{"main.S.M"}, nil},
		{"ifacemethod6", []string{"main.S.M"}, []string{"main.S.N"}},
		{"structof_funcof", []string{"main.S.M"}, []string{"main.S.N"}},
		{"globalmap", []string{"main.small", "main.effect"},
			[]string{"main.large"}},
	}
	for _, test := range tests {
		test := test
		t.Run(test.src, func(t *testing.T) {
			t.Parallel()
			src := filepath.Join("testdata", "deadcode", test.src+".go")
			exe := filepath.Join(tmpdir, test.src+".exe")
			cmd := testenv.Command(t, testenv.GoToolPath(t), "build", "-ldflags=-dumpdep", "-o", exe, src)
			out, err := cmd.CombinedOutput()
			if err != nil {
				t.Fatalf("%v: %v:\n%s", cmd.Args, err, out)
			}
			for _, pos := range test.pos {
				if !bytes.Contains(out, []byte(pos+"\n")) {
					t.Errorf("%s should be reachable. Output:\n%s", pos, out)
				}
			}
			for _, neg := range test.neg {
				if bytes.Contains(out, []byte(neg+"\n")) {
					t.Errorf("%s should not be reachable. Output:\n%s", neg, out)
				}
			}
		})
	}
}

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Editing: deadcode_test.go

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