llvm/test/tools/llvm-objcopy/MachO/remove-section-error.test

   1 # RUN: yaml2obj %s -o %t
   2 # RUN: not llvm-objcopy --remove-section __DATA,C %t /dev/null 2>&1 | FileCheck %s
   3
   4 # CHECK: symbol '_a' defined in section with index '2' cannot be removed because it is referenced by a relocation in section '__TEXT,__text'
   5
   6 ## The binary used in this test was built as follows:
   7 ## main.c:
   8 ##   __attribute__((section("__DATA,C"))) int a = 2;
   9 ##   int f() { return a; }
  10 ## build command:
  11 ## clang -fno-exceptions -fno-unwind-tables -c main.c -o main.o
  12
  13 --- !mach-o
  14 FileHeader:
  15   magic:           0xFEEDFACF
  16   cputype:         0x01000007
  17   cpusubtype:      0x00000003
  18   filetype:        0x00000001
  19   ncmds:           4
  20   sizeofcmds:      360
  21   flags:           0x00002000
  22   reserved:        0x00000000
  23 LoadCommands:
  24   - cmd:             LC_SEGMENT_64
  25     cmdsize:         232
  26     segname:         ''
  27     vmaddr:          0
  28     vmsize:          16
  29     fileoff:         392
  30     filesize:        16
  31     maxprot:         7
  32     initprot:        7
  33     nsects:          2
  34     flags:           0
  35     Sections:
  36       - sectname:        __text
  37         segname:         __TEXT
  38         addr:            0x0000000000000000
  39         size:            12
  40         offset:          0x00000188
  41         align:           4
  42         reloff:          0x00000198
  43         nreloc:          1
  44         flags:           0x80000400
  45         reserved1:       0x00000000
  46         reserved2:       0x00000000
  47         reserved3:       0x00000000
  48         content:         554889E58B05000000005DC3
  49         relocations:
  50           - address:         0x00000006
  51             symbolnum:       0
  52             pcrel:           true
  53             length:          2
  54             extern:          true
  55             type:            1
  56             scattered:       false
  57             value:           0
  58       - sectname:        C
  59         segname:         __DATA
  60         addr:            0x000000000000000C
  61         size:            4
  62         offset:          0x00000194
  63         align:           2
  64         reloff:          0x00000000
  65         nreloc:          0
  66         flags:           0x00000000
  67         reserved1:       0x00000000
  68         reserved2:       0x00000000
  69         reserved3:       0x00000000
  70         content:         '02000000'
  71   - cmd:             LC_BUILD_VERSION
  72     cmdsize:         24
  73     platform:        1
  74     minos:           658944
  75     sdk:             658944
  76     ntools:          0
  77   - cmd:             LC_SYMTAB
  78     cmdsize:         24
  79     symoff:          416
  80     nsyms:           2
  81     stroff:          448
  82     strsize:         8
  83   - cmd:             LC_DYSYMTAB
  84     cmdsize:         80
  85     ilocalsym:       0
  86     nlocalsym:       0
  87     iextdefsym:      0
  88     nextdefsym:      2
  89     iundefsym:       2
  90     nundefsym:       0
  91     tocoff:          0
  92     ntoc:            0
  93     modtaboff:       0
  94     nmodtab:         0
  95     extrefsymoff:    0
  96     nextrefsyms:     0
  97     indirectsymoff:  0
  98     nindirectsyms:   0
  99     extreloff:       0
 100     nextrel:         0
 101     locreloff:       0
 102     nlocrel:         0
 103 LinkEditData:
 104   NameList:
 105     - n_strx:          4
 106       n_type:          0x0F
 107       n_sect:          2
 108       n_desc:          0
 109       n_value:         12
 110     - n_strx:          1
 111       n_type:          0x0F
 112       n_sect:          1
 113       n_desc:          0
 114       n_value:         0
 115   StringTable:
 116     - ''
 117     - _f
 118     - _a
 119     - ''
 120 ...