lld/test/COFF/pdb-global-gc.yaml

   1 # REQUIRES: x86
   2 # RUN: yaml2obj %s -o %t.obj
   3 # RUN: llvm-mc %S/Inputs/pdb-global-gc.s -triple x86_64-windows-msvc -filetype=obj -o %t2.obj
   4 # RUN: lld-link %t.obj %t2.obj -debug -entry:main \
   5 # RUN:          -nodefaultlib -opt:ref -out:%t.exe -pdb:%t.pdb -verbose
   6 # RUN: llvm-pdbutil dump -symbols -globals %t.pdb | FileCheck %s
   7
   8 # This tests the case where an __imp_ chunk is discarded by linker GC. The debug
   9 # info may refer to the __imp_ symbol still.
  10
  11 # Compile this code with MSVC to regenerate the test case:
  12 #   extern char __declspec(dllimport) __wc_mb_cur;
  13 #   int discarded() { return __wc_mb_cur; }
  14 #   int main() { return g2; }
  15
  16 # CHECK:                             Global Symbols
  17 # CHECK-NEXT: ============================================================
  18 # CHECK-NEXT:   Records
  19 # CHECK-NEXT:       20 | S_GDATA32 [size = 28] `__wc_mb_cur`
  20 # CHECK-NEXT:            type = 0x0070 (char), addr = 0000:0000
  21
  22 # CHECK:                                Symbols
  23 # CHECK:      ============================================================
  24 # CHECK-NEXT:   Mod 0000 | `{{.*}}pdb-global-gc.yaml.tmp.obj`:
  25 # CHECK-NEXT:   Mod 0001 | `{{.*}}pdb-global-gc.yaml.tmp2.obj`:
  26 # CHECK-NEXT:   Error loading module stream 1.  The specified stream could not be loaded. Module stream not present
  27 # CHECK-NEXT:   Mod 0002 | `* Linker *`:
  28
  29 --- !COFF
  30 header:
  31   Machine:         IMAGE_FILE_MACHINE_AMD64
  32   Characteristics: [  ]
  33 sections:
  34   - Name:            '.debug$S'
  35     Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ ]
  36     Alignment:       1
  37     Subsections:
  38       - !Symbols
  39         Records:
  40           - Kind:            S_GDATA32
  41             DataSym:
  42               Type:            112
  43               DisplayName:     __wc_mb_cur
  44       - !StringTable
  45         Strings:
  46     Relocations:
  47       - VirtualAddress:  20
  48         SymbolName:      __wc_mb_cur
  49         Type:            IMAGE_REL_AMD64_SECREL
  50       - VirtualAddress:  24
  51         SymbolName:      __wc_mb_cur
  52         Type:            IMAGE_REL_AMD64_SECTION
  53   - Name:            '.text$mn'
  54     Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_LNK_COMDAT, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
  55     Alignment:       16
  56     SectionData:     0FBE0500000000C3
  57     Relocations:
  58       - VirtualAddress:  3
  59         SymbolName:      __wc_mb_cur
  60         Type:            IMAGE_REL_AMD64_REL32
  61   - Name:            '.text$mn'
  62     Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_LNK_COMDAT, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
  63     Alignment:       16
  64     SectionData:     B82A000000C3
  65 symbols:
  66   - Name:            '.debug$S'
  67     Value:           0
  68     SectionNumber:   1
  69     SimpleType:      IMAGE_SYM_TYPE_NULL
  70     ComplexType:     IMAGE_SYM_DTYPE_NULL
  71     StorageClass:    IMAGE_SYM_CLASS_STATIC
  72     SectionDefinition:
  73       Length:          240
  74       NumberOfRelocations: 2
  75       NumberOfLinenumbers: 0
  76       CheckSum:        0
  77       Number:          0
  78   - Name:            '.text$mn'
  79     Value:           0
  80     SectionNumber:   2
  81     SimpleType:      IMAGE_SYM_TYPE_NULL
  82     ComplexType:     IMAGE_SYM_DTYPE_NULL
  83     StorageClass:    IMAGE_SYM_CLASS_STATIC
  84     SectionDefinition:
  85       Length:          11
  86       NumberOfRelocations: 1
  87       NumberOfLinenumbers: 0
  88       CheckSum:        2906070869
  89       Number:          0
  90       Selection:       IMAGE_COMDAT_SELECT_NODUPLICATES
  91   - Name:            '.text$mn'
  92     Value:           0
  93     SectionNumber:   3
  94     SimpleType:      IMAGE_SYM_TYPE_NULL
  95     ComplexType:     IMAGE_SYM_DTYPE_NULL
  96     StorageClass:    IMAGE_SYM_CLASS_STATIC
  97     SectionDefinition:
  98       Length:          6
  99       NumberOfRelocations: 0
 100       NumberOfLinenumbers: 0
 101       CheckSum:        2139436471
 102       Number:          0
 103       Selection:       IMAGE_COMDAT_SELECT_NODUPLICATES
 104   - Name:            discarded
 105     Value:           0
 106     SectionNumber:   2
 107     SimpleType:      IMAGE_SYM_TYPE_NULL
 108     ComplexType:     IMAGE_SYM_DTYPE_FUNCTION
 109     StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
 110   - Name:            main
 111     Value:           0
 112     SectionNumber:   3
 113     SimpleType:      IMAGE_SYM_TYPE_NULL
 114     ComplexType:     IMAGE_SYM_DTYPE_FUNCTION
 115     StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
 116   - Name:            __wc_mb_cur
 117     Value:           0
 118     SectionNumber:   0
 119     SimpleType:      IMAGE_SYM_TYPE_NULL
 120     ComplexType:     IMAGE_SYM_DTYPE_NULL
 121     StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
 122 ...