1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
| # REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
# RUN: llvm-dwarfdump -v %t.o | FileCheck -check-prefix=INPUT %s
# INPUT: .debug_info contents:
# INPUT: DW_TAG_variable
# INPUT-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000027] = "foo")
# INPUT-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x0033 => {0x00000033} "int")
# INPUT-NEXT: DW_AT_external [DW_FORM_flag_present] (true)
# INPUT-NEXT: DW_AT_decl_file [DW_FORM_data1] ("/home/path/test.c")
# INPUT-NEXT: DW_AT_decl_line [DW_FORM_data1] (1)
# INPUT-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_addr 0x0)
# INPUT: DW_TAG_variable
# INPUT-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x0000002f] = "bar")
# INPUT-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x0033 => {0x00000033} "int")
# INPUT-NEXT: DW_AT_external [DW_FORM_flag_present] (true)
# INPUT-NEXT: DW_AT_decl_file [DW_FORM_data1] ("/home/path/test.c")
# INPUT-NEXT: DW_AT_decl_line [DW_FORM_data1] (2)
# INPUT-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_addr 0x0)
## Check we use information from .debug_info in messages.
# RUN: not ld.lld %t.o %t.o -o /dev/null 2>&1 | FileCheck %s
# CHECK: duplicate symbol: bar
# CHECK-NEXT: >>> defined at test.c:2
# CHECK-NEXT: >>> {{.*}}:(bar)
# CHECK-NEXT: >>> defined at test.c:2
# CHECK-NEXT: >>> {{.*}}:(.data+0x0)
# CHECK: duplicate symbol: foo
# CHECK-NEXT: >>> defined at test.c:1
# CHECK-NEXT: >>> {{.*}}:(foo)
# CHECK-NEXT: >>> defined at test.c:1
# CHECK-NEXT: >>> {{.*}}:(.bss+0x0)
# Used reduced output from following code and clang
# version 6.0.0 (trunk 316661) to produce this input file:
# Source (test.c):
# int foo = 0;
# int bar = 1;
# Invocation: clang -g -S test.c
.text
.file "test.c"
.file 1 "test.c"
.type foo,@object
.bss
.globl foo
.p2align 2
foo:
.long 0
.size foo, 4
.type bar,@object
.data
.globl bar
.p2align 2
bar:
.long 1
.size bar, 4
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 6.0.0"
.Linfo_string1:
.asciz "test.c"
.Linfo_string2:
.asciz "/home/path/"
.Linfo_string3:
.asciz "foo"
.Linfo_string4:
.asciz "int"
.Linfo_string5:
.asciz "bar"
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 14 # DW_FORM_strp
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 14 # DW_FORM_strp
.ascii "\264B" # DW_AT_GNU_pubnames
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long 76 # Length of Unit
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x45 DW_TAG_compile_unit
.long .Linfo_string0 # DW_AT_producer
.short 12 # DW_AT_language
.long .Linfo_string1 # DW_AT_name
.long 0 # DW_AT_stmt_list
.long .Linfo_string2 # DW_AT_comp_dir
.byte 2 # Abbrev [2] 0x1e:0x15 DW_TAG_variable
.long .Linfo_string3 # DW_AT_name
.long 51 # DW_AT_type
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.byte 9 # DW_AT_location
.byte 3
.quad foo
.byte 3 # Abbrev [3] 0x33:0x7 DW_TAG_base_type
.long .Linfo_string4 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 2 # Abbrev [2] 0x3a:0x15 DW_TAG_variable
.long .Linfo_string5 # DW_AT_name
.long 51 # DW_AT_type
.byte 1 # DW_AT_decl_file
.byte 2 # DW_AT_decl_line
.byte 9 # DW_AT_location
.byte 3
.quad bar
.byte 0 # End Of Children Mark
|