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
30header:
31  Machine:         IMAGE_FILE_MACHINE_AMD64
32  Characteristics: [  ]
33sections:
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$mn'
62    Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_LNK_COMDAT, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
63    Alignment:       16
64    SectionData:     B82A000000C3
65symbols:
66  - Name:            '.debug$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...
123