// Copyright 2014 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 elf

import (
	"io"
	"path"
	"reflect"
	"testing"
)

func TestSymbols(t *testing.T) {
	do := func(file string, ts []Symbol, getfunc func(*File) ([]Symbol, error)) {
		var f *File
		var err error
		if path.Ext(file) == ".gz" {
			var r io.ReaderAt
			if r, err = decompress(file); err == nil {
				f, err = NewFile(r)
			}
		} else {
			f, err = Open(file)
		}
		if err != nil {
			t.Errorf("TestSymbols: cannot open file %s: %v", file, err)
			return
		}
		defer f.Close()
		fs, err := getfunc(f)
		if err != nil && err != ErrNoSymbols {
			t.Error(err)
			return
		} else if err == ErrNoSymbols {
			fs = []Symbol{}
		}
		if !reflect.DeepEqual(ts, fs) {
			t.Errorf("%s: Symbols = %v, want %v", file, fs, ts)
		}

		for i, s := range fs {
			if s.HasVersion {
				// No hidden versions here.
				if s.VersionIndex.IsHidden() {
					t.Errorf("%s: symbol %d: unexpected hidden version", file, i)
				}
				if got, want := s.VersionIndex.Index(), uint16(s.VersionIndex); got != want {
					t.Errorf("%s: symbol %d: VersionIndex.Index() == %d, want %d", file, i, got, want)
				}
			}
		}

	}
	for file, ts := range symbolsGolden {
		do(file, ts, (*File).Symbols)
	}
	for file, ts := range dynamicSymbolsGolden {
		do(file, ts, (*File).DynamicSymbols)
	}
}

// golden symbol table data generated by testdata/getgoldsym.c

var symbolsGolden = map[string][]Symbol{
	"testdata/gcc-amd64-linux-exec": {
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x1,
			Value:        0x400200,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x2,
			Value:        0x40021C,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x3,
			Value:        0x400240,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x4,
			Value:        0x400268,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x5,
			Value:        0x400288,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x6,
			Value:        0x4002E8,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x7,
			Value:        0x400326,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x8,
			Value:        0x400330,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x9,
			Value:        0x400350,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xA,
			Value:        0x400368,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xB,
			Value:        0x400398,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xC,
			Value:        0x4003B0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x4003E0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xE,
			Value:        0x400594,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xF,
			Value:        0x4005A4,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x10,
			Value:        0x4005B8,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x11,
			Value:        0x4005E0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x12,
			Value:        0x600688,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x13,
			Value:        0x600698,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x14,
			Value:        0x6006A8,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x15,
			Value:        0x6006B0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x16,
			Value:        0x600850,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x17,
			Value:        0x600858,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x18,
			Value:        0x600880,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x19,
			Value:        0x600898,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x1A,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x1B,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x1C,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x1D,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x1E,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x1F,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x20,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "",
			Info:         0x3,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x21,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "init.c",
			Info:         0x4,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "initfini.c",
			Info:         0x4,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "call_gmon_start",
			Info:         0x2,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x40040C,
			Size:         0x0,
		},
		Symbol{
			Name:         "crtstuff.c",
			Info:         0x4,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "__CTOR_LIST__",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x12,
			Value:        0x600688,
			Size:         0x0,
		},
		Symbol{
			Name:         "__DTOR_LIST__",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x13,
			Value:        0x600698,
			Size:         0x0,
		},
		Symbol{
			Name:         "__JCR_LIST__",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x14,
			Value:        0x6006A8,
			Size:         0x0,
		},
		Symbol{
			Name:         "__do_global_dtors_aux",
			Info:         0x2,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x400430,
			Size:         0x0,
		},
		Symbol{
			Name:         "completed.6183",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x19,
			Value:        0x600898,
			Size:         0x1,
		},
		Symbol{
			Name:         "p.6181",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x18,
			Value:        0x600890,
			Size:         0x0,
		},
		Symbol{
			Name:         "frame_dummy",
			Info:         0x2,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x400470,
			Size:         0x0,
		},
		Symbol{
			Name:         "crtstuff.c",
			Info:         0x4,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "__CTOR_END__",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x12,
			Value:        0x600690,
			Size:         0x0,
		},
		Symbol{
			Name:         "__DTOR_END__",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x13,
			Value:        0x6006A0,
			Size:         0x0,
		},
		Symbol{
			Name:         "__FRAME_END__",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x11,
			Value:        0x400680,
			Size:         0x0,
		},
		Symbol{
			Name:         "__JCR_END__",
			Info:         0x1,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x14,
			Value:        0x6006A8,
			Size:         0x0,
		},
		Symbol{
			Name:         "__do_global_ctors_aux",
			Info:         0x2,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x400560,
			Size:         0x0,
		},
		Symbol{
			Name:         "initfini.c",
			Info:         0x4,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "hello.c",
			Info:         0x4,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "_GLOBAL_OFFSET_TABLE_",
			Info:         0x1,
			Other:        0x2,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x17,
			Value:        0x600858,
			Size:         0x0,
		},
		Symbol{
			Name:         "__init_array_end",
			Info:         0x0,
			Other:        0x2,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x12,
			Value:        0x600684,
			Size:         0x0,
		},
		Symbol{
			Name:         "__init_array_start",
			Info:         0x0,
			Other:        0x2,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x12,
			Value:        0x600684,
			Size:         0x0,
		},
		Symbol{
			Name:         "_DYNAMIC",
			Info:         0x1,
			Other:        0x2,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x15,
			Value:        0x6006B0,
			Size:         0x0,
		},
		Symbol{
			Name:         "data_start",
			Info:         0x20,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x18,
			Value:        0x600880,
			Size:         0x0,
		},
		Symbol{
			Name:         "__libc_csu_fini",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x4004C0,
			Size:         0x2,
		},
		Symbol{
			Name:         "_start",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x4003E0,
			Size:         0x0,
		},
		Symbol{
			Name:         "__gmon_start__",
			Info:         0x20,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x0,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "_Jv_RegisterClasses",
			Info:         0x20,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x0,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         "puts@@GLIBC_2.2.5",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x0,
			Value:        0x0,
			Size:         0x18C,
		},
		Symbol{
			Name:         "_fini",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xE,
			Value:        0x400594,
			Size:         0x0,
		},
		Symbol{
			Name:         "__libc_start_main@@GLIBC_2.2.5",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x0,
			Value:        0x0,
			Size:         0x1C2,
		},
		Symbol{
			Name:         "_IO_stdin_used",
			Info:         0x11,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xF,
			Value:        0x4005A4,
			Size:         0x4,
		},
		Symbol{
			Name:         "__data_start",
			Info:         0x10,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x18,
			Value:        0x600880,
			Size:         0x0,
		},
		Symbol{
			Name:         "__dso_handle",
			Info:         0x11,
			Other:        0x2,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0x18,
			Value:        0x600888,
			Size:         0x0,
		},
		Symbol{
			Name:         "__libc_csu_init",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x4004D0,
			Size:         0x89,
		},
		Symbol{
			Name:         "__bss_start",
			Info:         0x10,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x600898,
			Size:         0x0,
		},
		Symbol{
			Name:         "_end",
			Info:         0x10,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x6008A0,
			Size:         0x0,
		},
		Symbol{
			Name:         "_edata",
			Info:         0x10,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x600898,
			Size:         0x0,
		},
		Symbol{
			Name:         "main",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xD,
			Value:        0x400498,
			Size:         0x1B,
		},
		Symbol{
			Name:         "_init",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xB,
			Value:        0x400398,
			Size:         0x0,
		},
	},
	"testdata/go-relocation-test-clang-x86.obj": {
		Symbol{
			Name:         "go-relocation-test-clang.c",
			Info:         0x4,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xFFF1,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         ".Linfo_string0",
			Info:         0x0,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xC,
			Value:        0x0,
			Size:         0x0,
		},
		Symbol{
			Name:         ".Linfo_string1",
			Info:         0x0,
			Other:        0x0,
			HasVersion:   false,
			VersionIndex: 0,
			Section:      0xC,
			Value:        0x2C,
			Size:         0x0,
		},
		Symbol{
			Name:         ".Linfo_string2",
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			VersionIndex: 0,
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}

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			VersionIndex: 0x2,
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x2,
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			Size:         0x1C2,
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			Library:      "libc.so.6",
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	"testdata/libtiffxx.so_": {
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			Info:         0x12,
			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x3,
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			Size:         0x0,
			Version:      "GLIBCXX_3.4",
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x4,
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			Size:         0x0,
			Version:      "GLIBC_2.2.5",
			Library:      "libc.so.6",
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x4,
			Section:      0x0,
			Value:        0x0,
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			Version:      "GLIBC_2.2.5",
			Library:      "libc.so.6",
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		Symbol{
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			Info:         0x12,
			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x3,
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			Size:         0x0,
			Version:      "GLIBCXX_3.4",
			Library:      "libstdc++.so.6",
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x3,
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			Version:      "GLIBCXX_3.4",
			Library:      "libstdc++.so.6",
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		Symbol{
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			Info:         0x12,
			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x3,
			Section:      0x0,
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			Size:         0x0,
			Version:      "GLIBCXX_3.4",
			Library:      "libstdc++.so.6",
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x5,
			Section:      0x0,
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			Size:         0x0,
			Version:      "CXXABI_1.3.9",
			Library:      "libstdc++.so.6",
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		Symbol{
			Name:         "__stack_chk_fail",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x6,
			Section:      0x0,
			Value:        0x0,
			Size:         0x0,
			Version:      "GLIBC_2.4",
			Library:      "libc.so.6",
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			Other:        0x0,
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			Size:         0x0,
			Version:      "GLIBCXX_3.4.9",
			Library:      "libstdc++.so.6",
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x3,
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			Library:      "libstdc++.so.6",
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x3,
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			Version:      "GLIBCXX_3.4",
			Library:      "libstdc++.so.6",
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x3,
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		Symbol{
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x8,
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			Library:      "libstdc++.so.6",
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x9,
			Section:      0x0,
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			Size:         0x0,
			Version:      "LIBTIFF_4.0",
			Library:      "libtiff.so.6",
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		Symbol{
			Name:         "_ZNSt9basic_iosIcSt11char_traitsIcEE5clearESt12_Ios_Iostate",
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			Other:        0x0,
			HasVersion:   true,
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			Version:      "GLIBCXX_3.4",
			Library:      "libstdc++.so.6",
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		Symbol{
			Name:         "_ZNSi5tellgEv",
			Info:         0x12,
			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x3,
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			Version:      "GLIBCXX_3.4",
			Library:      "libstdc++.so.6",
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		Symbol{
			Name:         "_ITM_deregisterTMCloneTable",
			Info:         0x20,
			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x1,
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		Symbol{
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			Other:        0x0,
			HasVersion:   true,
			VersionIndex: 0x1,
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		},
		Symbol{
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			HasVersion:   true,
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		Symbol{
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		Symbol{
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			HasVersion:   true,
			VersionIndex: 0x2,
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}