symbols_test.go

     1  // Copyright 2014 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package elf
     6  
     7  import (
     8  	"io"
     9  	"path"
    10  	"reflect"
    11  	"testing"
    12  )
    13  
    14  // TODO: remove duplicate code
    15  func TestSymbols(t *testing.T) {
    16  	do := func(file string, ts []Symbol, getfunc func(*File) ([]Symbol, error)) {
    17  		var f *File
    18  		var err error
    19  		if path.Ext(file) == ".gz" {
    20  			var r io.ReaderAt
    21  			if r, err = decompress(file); err == nil {
    22  				f, err = NewFile(r)
    23  			}
    24  		} else {
    25  			f, err = Open(file)
    26  		}
    27  		if err != nil {
    28  			t.Errorf("TestSymbols: cannot open file %s: %v", file, err)
    29  			return
    30  		}
    31  		defer f.Close()
    32  		fs, err := getfunc(f)
    33  		if err != nil && err != ErrNoSymbols {
    34  			t.Error(err)
    35  			return
    36  		} else if err == ErrNoSymbols {
    37  			fs = []Symbol{}
    38  		}
    39  		if !reflect.DeepEqual(ts, fs) {
    40  			t.Errorf("%s: Symbols = %v, want %v", file, ts, fs)
    41  		}
    42  	}
    43  	for file, ts := range symbolsGolden {
    44  		do(file, ts, (*File).Symbols)
    45  	}
    46  	for file, ts := range dynamicSymbolsGolden {
    47  		do(file, ts, (*File).DynamicSymbols)
    48  	}
    49  }
    50  
    51  // golden symbol table data generated by testdata/getgoldsym.c
    52  
    53  var symbolsGolden = map[string][]Symbol{
    54  	"testdata/gcc-amd64-linux-exec": {
    55  		Symbol{
    56  			Name:    "",
    57  			Info:    0x3,
    58  			Other:   0x0,
    59  			Section: 0x1,
    60  			Value:   0x400200,
    61  			Size:    0x0,
    62  		},
    63  		Symbol{
    64  			Name:    "",
    65  			Info:    0x3,
    66  			Other:   0x0,
    67  			Section: 0x2,
    68  			Value:   0x40021C,
    69  			Size:    0x0,
    70  		},
    71  		Symbol{
    72  			Name:    "",
    73  			Info:    0x3,
    74  			Other:   0x0,
    75  			Section: 0x3,
    76  			Value:   0x400240,
    77  			Size:    0x0,
    78  		},
    79  		Symbol{
    80  			Name:    "",
    81  			Info:    0x3,
    82  			Other:   0x0,
    83  			Section: 0x4,
    84  			Value:   0x400268,
    85  			Size:    0x0,
    86  		},
    87  		Symbol{
    88  			Name:    "",
    89  			Info:    0x3,
    90  			Other:   0x0,
    91  			Section: 0x5,
    92  			Value:   0x400288,
    93  			Size:    0x0,
    94  		},
    95  		Symbol{
    96  			Name:    "",
    97  			Info:    0x3,
    98  			Other:   0x0,
    99  			Section: 0x6,
   100  			Value:   0x4002E8,
   101  			Size:    0x0,
   102  		},
   103  		Symbol{
   104  			Name:    "",
   105  			Info:    0x3,
   106  			Other:   0x0,
   107  			Section: 0x7,
   108  			Value:   0x400326,
   109  			Size:    0x0,
   110  		},
   111  		Symbol{
   112  			Name:    "",
   113  			Info:    0x3,
   114  			Other:   0x0,
   115  			Section: 0x8,
   116  			Value:   0x400330,
   117  			Size:    0x0,
   118  		},
   119  		Symbol{
   120  			Name:    "",
   121  			Info:    0x3,
   122  			Other:   0x0,
   123  			Section: 0x9,
   124  			Value:   0x400350,
   125  			Size:    0x0,
   126  		},
   127  		Symbol{
   128  			Name:    "",
   129  			Info:    0x3,
   130  			Other:   0x0,
   131  			Section: 0xA,
   132  			Value:   0x400368,
   133  			Size:    0x0,
   134  		},
   135  		Symbol{
   136  			Name:    "",
   137  			Info:    0x3,
   138  			Other:   0x0,
   139  			Section: 0xB,
   140  			Value:   0x400398,
   141  			Size:    0x0,
   142  		},
   143  		Symbol{
   144  			Name:    "",
   145  			Info:    0x3,
   146  			Other:   0x0,
   147  			Section: 0xC,
   148  			Value:   0x4003B0,
   149  			Size:    0x0,
   150  		},
   151  		Symbol{
   152  			Name:    "",
   153  			Info:    0x3,
   154  			Other:   0x0,
   155  			Section: 0xD,
   156  			Value:   0x4003E0,
   157  			Size:    0x0,
   158  		},
   159  		Symbol{
   160  			Name:    "",
   161  			Info:    0x3,
   162  			Other:   0x0,
   163  			Section: 0xE,
   164  			Value:   0x400594,
   165  			Size:    0x0,
   166  		},
   167  		Symbol{
   168  			Name:    "",
   169  			Info:    0x3,
   170  			Other:   0x0,
   171  			Section: 0xF,
   172  			Value:   0x4005A4,
   173  			Size:    0x0,
   174  		},
   175  		Symbol{
   176  			Name:    "",
   177  			Info:    0x3,
   178  			Other:   0x0,
   179  			Section: 0x10,
   180  			Value:   0x4005B8,
   181  			Size:    0x0,
   182  		},
   183  		Symbol{
   184  			Name:    "",
   185  			Info:    0x3,
   186  			Other:   0x0,
   187  			Section: 0x11,
   188  			Value:   0x4005E0,
   189  			Size:    0x0,
   190  		},
   191  		Symbol{
   192  			Name:    "",
   193  			Info:    0x3,
   194  			Other:   0x0,
   195  			Section: 0x12,
   196  			Value:   0x600688,
   197  			Size:    0x0,
   198  		},
   199  		Symbol{
   200  			Name:    "",
   201  			Info:    0x3,
   202  			Other:   0x0,
   203  			Section: 0x13,
   204  			Value:   0x600698,
   205  			Size:    0x0,
   206  		},
   207  		Symbol{
   208  			Name:    "",
   209  			Info:    0x3,
   210  			Other:   0x0,
   211  			Section: 0x14,
   212  			Value:   0x6006A8,
   213  			Size:    0x0,
   214  		},
   215  		Symbol{
   216  			Name:    "",
   217  			Info:    0x3,
   218  			Other:   0x0,
   219  			Section: 0x15,
   220  			Value:   0x6006B0,
   221  			Size:    0x0,
   222  		},
   223  		Symbol{
   224  			Name:    "",
   225  			Info:    0x3,
   226  			Other:   0x0,
   227  			Section: 0x16,
   228  			Value:   0x600850,
   229  			Size:    0x0,
   230  		},
   231  		Symbol{
   232  			Name:    "",
   233  			Info:    0x3,
   234  			Other:   0x0,
   235  			Section: 0x17,
   236  			Value:   0x600858,
   237  			Size:    0x0,
   238  		},
   239  		Symbol{
   240  			Name:    "",
   241  			Info:    0x3,
   242  			Other:   0x0,
   243  			Section: 0x18,
   244  			Value:   0x600880,
   245  			Size:    0x0,
   246  		},
   247  		Symbol{
   248  			Name:    "",
   249  			Info:    0x3,
   250  			Other:   0x0,
   251  			Section: 0x19,
   252  			Value:   0x600898,
   253  			Size:    0x0,
   254  		},
   255  		Symbol{
   256  			Name:    "",
   257  			Info:    0x3,
   258  			Other:   0x0,
   259  			Section: 0x1A,
   260  			Value:   0x0,
   261  			Size:    0x0,
   262  		},
   263  		Symbol{
   264  			Name:    "",
   265  			Info:    0x3,
   266  			Other:   0x0,
   267  			Section: 0x1B,
   268  			Value:   0x0,
   269  			Size:    0x0,
   270  		},
   271  		Symbol{
   272  			Name:    "",
   273  			Info:    0x3,
   274  			Other:   0x0,
   275  			Section: 0x1C,
   276  			Value:   0x0,
   277  			Size:    0x0,
   278  		},
   279  		Symbol{
   280  			Name:    "",
   281  			Info:    0x3,
   282  			Other:   0x0,
   283  			Section: 0x1D,
   284  			Value:   0x0,
   285  			Size:    0x0,
   286  		},
   287  		Symbol{
   288  			Name:    "",
   289  			Info:    0x3,
   290  			Other:   0x0,
   291  			Section: 0x1E,
   292  			Value:   0x0,
   293  			Size:    0x0,
   294  		},
   295  		Symbol{
   296  			Name:    "",
   297  			Info:    0x3,
   298  			Other:   0x0,
   299  			Section: 0x1F,
   300  			Value:   0x0,
   301  			Size:    0x0,
   302  		},
   303  		Symbol{
   304  			Name:    "",
   305  			Info:    0x3,
   306  			Other:   0x0,
   307  			Section: 0x20,
   308  			Value:   0x0,
   309  			Size:    0x0,
   310  		},
   311  		Symbol{
   312  			Name:    "",
   313  			Info:    0x3,
   314  			Other:   0x0,
   315  			Section: 0x21,
   316  			Value:   0x0,
   317  			Size:    0x0,
   318  		},
   319  		Symbol{
   320  			Name:    "init.c",
   321  			Info:    0x4,
   322  			Other:   0x0,
   323  			Section: 0xFFF1,
   324  			Value:   0x0,
   325  			Size:    0x0,
   326  		},
   327  		Symbol{
   328  			Name:    "initfini.c",
   329  			Info:    0x4,
   330  			Other:   0x0,
   331  			Section: 0xFFF1,
   332  			Value:   0x0,
   333  			Size:    0x0,
   334  		},
   335  		Symbol{
   336  			Name:    "call_gmon_start",
   337  			Info:    0x2,
   338  			Other:   0x0,
   339  			Section: 0xD,
   340  			Value:   0x40040C,
   341  			Size:    0x0,
   342  		},
   343  		Symbol{
   344  			Name:    "crtstuff.c",
   345  			Info:    0x4,
   346  			Other:   0x0,
   347  			Section: 0xFFF1,
   348  			Value:   0x0,
   349  			Size:    0x0,
   350  		},
   351  		Symbol{
   352  			Name:    "__CTOR_LIST__",
   353  			Info:    0x1,
   354  			Other:   0x0,
   355  			Section: 0x12,
   356  			Value:   0x600688,
   357  			Size:    0x0,
   358  		},
   359  		Symbol{
   360  			Name:    "__DTOR_LIST__",
   361  			Info:    0x1,
   362  			Other:   0x0,
   363  			Section: 0x13,
   364  			Value:   0x600698,
   365  			Size:    0x0,
   366  		},
   367  		Symbol{
   368  			Name:    "__JCR_LIST__",
   369  			Info:    0x1,
   370  			Other:   0x0,
   371  			Section: 0x14,
   372  			Value:   0x6006A8,
   373  			Size:    0x0,
   374  		},
   375  		Symbol{
   376  			Name:    "__do_global_dtors_aux",
   377  			Info:    0x2,
   378  			Other:   0x0,
   379  			Section: 0xD,
   380  			Value:   0x400430,
   381  			Size:    0x0,
   382  		},
   383  		Symbol{
   384  			Name:    "completed.6183",
   385  			Info:    0x1,
   386  			Other:   0x0,
   387  			Section: 0x19,
   388  			Value:   0x600898,
   389  			Size:    0x1,
   390  		},
   391  		Symbol{
   392  			Name:    "p.6181",
   393  			Info:    0x1,
   394  			Other:   0x0,
   395  			Section: 0x18,
   396  			Value:   0x600890,
   397  			Size:    0x0,
   398  		},
   399  		Symbol{
   400  			Name:    "frame_dummy",
   401  			Info:    0x2,
   402  			Other:   0x0,
   403  			Section: 0xD,
   404  			Value:   0x400470,
   405  			Size:    0x0,
   406  		},
   407  		Symbol{
   408  			Name:    "crtstuff.c",
   409  			Info:    0x4,
   410  			Other:   0x0,
   411  			Section: 0xFFF1,
   412  			Value:   0x0,
   413  			Size:    0x0,
   414  		},
   415  		Symbol{
   416  			Name:    "__CTOR_END__",
   417  			Info:    0x1,
   418  			Other:   0x0,
   419  			Section: 0x12,
   420  			Value:   0x600690,
   421  			Size:    0x0,
   422  		},
   423  		Symbol{
   424  			Name:    "__DTOR_END__",
   425  			Info:    0x1,
   426  			Other:   0x0,
   427  			Section: 0x13,
   428  			Value:   0x6006A0,
   429  			Size:    0x0,
   430  		},
   431  		Symbol{
   432  			Name:    "__FRAME_END__",
   433  			Info:    0x1,
   434  			Other:   0x0,
   435  			Section: 0x11,
   436  			Value:   0x400680,
   437  			Size:    0x0,
   438  		},
   439  		Symbol{
   440  			Name:    "__JCR_END__",
   441  			Info:    0x1,
   442  			Other:   0x0,
   443  			Section: 0x14,
   444  			Value:   0x6006A8,
   445  			Size:    0x0,
   446  		},
   447  		Symbol{
   448  			Name:    "__do_global_ctors_aux",
   449  			Info:    0x2,
   450  			Other:   0x0,
   451  			Section: 0xD,
   452  			Value:   0x400560,
   453  			Size:    0x0,
   454  		},
   455  		Symbol{
   456  			Name:    "initfini.c",
   457  			Info:    0x4,
   458  			Other:   0x0,
   459  			Section: 0xFFF1,
   460  			Value:   0x0,
   461  			Size:    0x0,
   462  		},
   463  		Symbol{
   464  			Name:    "hello.c",
   465  			Info:    0x4,
   466  			Other:   0x0,
   467  			Section: 0xFFF1,
   468  			Value:   0x0,
   469  			Size:    0x0,
   470  		},
   471  		Symbol{
   472  			Name:    "_GLOBAL_OFFSET_TABLE_",
   473  			Info:    0x1,
   474  			Other:   0x2,
   475  			Section: 0x17,
   476  			Value:   0x600858,
   477  			Size:    0x0,
   478  		},
   479  		Symbol{
   480  			Name:    "__init_array_end",
   481  			Info:    0x0,
   482  			Other:   0x2,
   483  			Section: 0x12,
   484  			Value:   0x600684,
   485  			Size:    0x0,
   486  		},
   487  		Symbol{
   488  			Name:    "__init_array_start",
   489  			Info:    0x0,
   490  			Other:   0x2,
   491  			Section: 0x12,
   492  			Value:   0x600684,
   493  			Size:    0x0,
   494  		},
   495  		Symbol{
   496  			Name:    "_DYNAMIC",
   497  			Info:    0x1,
   498  			Other:   0x2,
   499  			Section: 0x15,
   500  			Value:   0x6006B0,
   501  			Size:    0x0,
   502  		},
   503  		Symbol{
   504  			Name:    "data_start",
   505  			Info:    0x20,
   506  			Other:   0x0,
   507  			Section: 0x18,
   508  			Value:   0x600880,
   509  			Size:    0x0,
   510  		},
   511  		Symbol{
   512  			Name:    "__libc_csu_fini",
   513  			Info:    0x12,
   514  			Other:   0x0,
   515  			Section: 0xD,
   516  			Value:   0x4004C0,
   517  			Size:    0x2,
   518  		},
   519  		Symbol{
   520  			Name:    "_start",
   521  			Info:    0x12,
   522  			Other:   0x0,
   523  			Section: 0xD,
   524  			Value:   0x4003E0,
   525  			Size:    0x0,
   526  		},
   527  		Symbol{
   528  			Name:    "__gmon_start__",
   529  			Info:    0x20,
   530  			Other:   0x0,
   531  			Section: 0x0,
   532  			Value:   0x0,
   533  			Size:    0x0,
   534  		},
   535  		Symbol{
   536  			Name:    "_Jv_RegisterClasses",
   537  			Info:    0x20,
   538  			Other:   0x0,
   539  			Section: 0x0,
   540  			Value:   0x0,
   541  			Size:    0x0,
   542  		},
   543  		Symbol{
   544  			Name:    "puts@@GLIBC_2.2.5",
   545  			Info:    0x12,
   546  			Other:   0x0,
   547  			Section: 0x0,
   548  			Value:   0x0,
   549  			Size:    0x18C,
   550  		},
   551  		Symbol{
   552  			Name:    "_fini",
   553  			Info:    0x12,
   554  			Other:   0x0,
   555  			Section: 0xE,
   556  			Value:   0x400594,
   557  			Size:    0x0,
   558  		},
   559  		Symbol{
   560  			Name:    "__libc_start_main@@GLIBC_2.2.5",
   561  			Info:    0x12,
   562  			Other:   0x0,
   563  			Section: 0x0,
   564  			Value:   0x0,
   565  			Size:    0x1C2,
   566  		},
   567  		Symbol{
   568  			Name:    "_IO_stdin_used",
   569  			Info:    0x11,
   570  			Other:   0x0,
   571  			Section: 0xF,
   572  			Value:   0x4005A4,
   573  			Size:    0x4,
   574  		},
   575  		Symbol{
   576  			Name:    "__data_start",
   577  			Info:    0x10,
   578  			Other:   0x0,
   579  			Section: 0x18,
   580  			Value:   0x600880,
   581  			Size:    0x0,
   582  		},
   583  		Symbol{
   584  			Name:    "__dso_handle",
   585  			Info:    0x11,
   586  			Other:   0x2,
   587  			Section: 0x18,
   588  			Value:   0x600888,
   589  			Size:    0x0,
   590  		},
   591  		Symbol{
   592  			Name:    "__libc_csu_init",
   593  			Info:    0x12,
   594  			Other:   0x0,
   595  			Section: 0xD,
   596  			Value:   0x4004D0,
   597  			Size:    0x89,
   598  		},
   599  		Symbol{
   600  			Name:    "__bss_start",
   601  			Info:    0x10,
   602  			Other:   0x0,
   603  			Section: 0xFFF1,
   604  			Value:   0x600898,
   605  			Size:    0x0,
   606  		},
   607  		Symbol{
   608  			Name:    "_end",
   609  			Info:    0x10,
   610  			Other:   0x0,
   611  			Section: 0xFFF1,
   612  			Value:   0x6008A0,
   613  			Size:    0x0,
   614  		},
   615  		Symbol{
   616  			Name:    "_edata",
   617  			Info:    0x10,
   618  			Other:   0x0,
   619  			Section: 0xFFF1,
   620  			Value:   0x600898,
   621  			Size:    0x0,
   622  		},
   623  		Symbol{
   624  			Name:    "main",
   625  			Info:    0x12,
   626  			Other:   0x0,
   627  			Section: 0xD,
   628  			Value:   0x400498,
   629  			Size:    0x1B,
   630  		},
   631  		Symbol{
   632  			Name:    "_init",
   633  			Info:    0x12,
   634  			Other:   0x0,
   635  			Section: 0xB,
   636  			Value:   0x400398,
   637  			Size:    0x0,
   638  		},
   639  	},
   640  	"testdata/go-relocation-test-clang-x86.obj": {
   641  		Symbol{
   642  			Name:    "go-relocation-test-clang.c",
   643  			Info:    0x4,
   644  			Other:   0x0,
   645  			Section: 0xFFF1,
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   647  			Size:    0x0,
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   649  		Symbol{
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   651  			Info:    0x0,
   652  			Other:   0x0,
   653  			Section: 0xC,
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   657  		Symbol{
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   661  			Section: 0xC,
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   665  		Symbol{
   666  			Name:    ".Linfo_string2",
   667  			Info:    0x0,
   668  			Other:   0x0,
   669  			Section: 0xC,
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   673  		Symbol{
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   679  			Size:    0x0,
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   681  		Symbol{
   682  			Name:    ".Linfo_string4",
   683  			Info:    0x0,
   684  			Other:   0x0,
   685  			Section: 0xC,
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   687  			Size:    0x0,
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   718  			Value:   0x0,
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   722  			Name:    "",
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   724  			Other:   0x0,
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   726  			Value:   0x0,
   727  			Size:    0x0,
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   729  		Symbol{
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   746  			Name:    "",
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   750  			Value:   0x0,
   751  			Size:    0x0,
   752  		},
   753  		Symbol{
   754  			Name:    "",
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   756  			Other:   0x0,
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   758  			Value:   0x0,
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   761  		Symbol{
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   767  			Size:    0x0,
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   769  		Symbol{
   770  			Name:    "",
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   777  		Symbol{
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   782  			Value:   0x0,
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   785  		Symbol{
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   788  			Other:   0x0,
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   796  			Other:   0x0,
   797  			Section: 0xFFF2,
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   799  			Size:    0x4,
   800  		},
   801  	},
   802  	"testdata/hello-world-core.gz": {},
   803  }
   804  
   805  var dynamicSymbolsGolden = map[string][]Symbol{
   806  	"testdata/gcc-amd64-linux-exec": {
   807  		Symbol{
   808  			Name:    "__gmon_start__",
   809  			Info:    0x20,
   810  			Other:   0x0,
   811  			Section: 0x0,
   812  			Value:   0x0,
   813  			Size:    0x0,
   814  		},
   815  		Symbol{
   816  			Name:    "puts",
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   818  			Other:   0x0,
   819  			Section: 0x0,
   820  			Value:   0x0,
   821  			Size:    0x18C,
   822  			Version: "GLIBC_2.2.5",
   823  			Library: "libc.so.6",
   824  		},
   825  		Symbol{
   826  			Name:    "__libc_start_main",
   827  			Info:    0x12,
   828  			Other:   0x0,
   829  			Section: 0x0,
   830  			Value:   0x0,
   831  			Size:    0x1C2,
   832  			Version: "GLIBC_2.2.5",
   833  			Library: "libc.so.6",
   834  		},
   835  	},
   836  	"testdata/go-relocation-test-clang-x86.obj": {},
   837  	"testdata/hello-world-core.gz":              {},
   838  }
   839
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