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[DWARFFormValue] Don't consider DW_FORM_data4/8 to be section offsets. 

When dumping ToT clan's debug info with dwarfdump, we were seeing an
error saying that that the location list overflows the debug_loc
section. After reducing the testcase we figured out that we were
interpreting the DW_FORM_data4 as a section offset.

In DWARF3 DW_FORM_data4 and DW_FORM_data8 served also as a section
offset. Until now we didn't check check for the DWARF version, because
some producers (read old versions of clang) were still emitting this.
The relevant code/comment was added in 2013, and I believe it's now
reasonable to start checking the version.

The FormValue class is a little bit of a mess because it cashes the
DWARF unit and context when it extracted the value itself. Several
methods of the class rely on it being present, or return an Optional for
the code path that needs it. At the same time the FormValue class also
used in places where there's no DWARF unit.

For this patch I went with the least invasive change: checking the
version from the CU when it's available. If it's not (because the form
value was created from a value directly) we default to the old behavior.

Differential revision: https://reviews.llvm.org/D58698

llvm-svn: 355456
This commit is contained in:
Jonas Devlieghere 2019-03-05 23:47:22 +00:00
parent 74fea3665f
commit 4cc567bb9e
3 changed files with 657 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
llvm/lib/DebugInfo/DWARF/DWARFFormValue.cpp
View File

@ -220,13 +220,17 @@ bool DWARFFormValue::isFormClass(DWARFFormValue::FormClass FC) const {
default:
break;
}
// In DWARF3 DW_FORM_data4 and DW_FORM_data8 served also as a section offset.
// Don't check for DWARF version here, as some producers may still do this
// by mistake. Also accept DW_FORM_[line_]strp since these are
// .debug_[line_]str section offsets.
return (Form == DW_FORM_data4 || Form == DW_FORM_data8 ||
Form == DW_FORM_strp || Form == DW_FORM_line_strp) &&
FC == FC_SectionOffset;
if (FC == FC_SectionOffset) {
if (Form == DW_FORM_strp || Form == DW_FORM_line_strp)
return true;
// In DWARF3 DW_FORM_data4 and DW_FORM_data8 served also as a section
// offset. If we don't have a DWARFUnit, default to the old behavior.
if (Form == DW_FORM_data4 || Form == DW_FORM_data8)
return !U || U->getVersion() <= 3;
}
return false;
}
bool DWARFFormValue::extractValue(const DWARFDataExtractor &Data,

315
llvm/test/tools/llvm-dwarfdump/X86/formclass2.s Normal file
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@ -0,0 +1,315 @@
# Source:
# struct e {
# char f[16384];
# char g;
# };
# e foo() {
# auto E = new e;
# return *E;
# }
# Compile with:
# clang -O2 -gdwarf-2 -S a.cpp -o a2.s
# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o %t.o
# RUN: llvm-dwarfdump -debug-info -name g %t.o | FileCheck %s
# CHECK: DW_TAG_member
# CHECK: DW_AT_name ("g")
# CHECK: DW_AT_data_member_location (DW_OP_plus_uconst 0x4000)
.section __TEXT,__text,regular,pure_instructions
.macosx_version_min 10, 14
.globl __Z3foov ## -- Begin function _Z3foov
.p2align 4, 0x90
__Z3foov: ## @_Z3foov
Lfunc_begin0:
.file 1 "/private/tmp" "a.cpp"
.loc 1 5 0 ## a.cpp:5:0
.cfi_startproc
## %bb.0: ## %entry
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
pushq %rbx
pushq %rax
.cfi_offset %rbx, -24
movq %rdi, %rbx
Ltmp0:
.loc 1 6 12 prologue_end ## a.cpp:6:12
movl $16385, %edi ## imm = 0x4001
callq __Znwm
Ltmp1:
##DEBUG_VALUE: foo:E <- $rax
.loc 1 7 10 ## a.cpp:7:10
movl $16385, %edx ## imm = 0x4001
movq %rbx, %rdi
movq %rax, %rsi
callq _memcpy
Ltmp2:
.loc 1 8 1 ## a.cpp:8:1
movq %rbx, %rax
addq $8, %rsp
popq %rbx
popq %rbp
retq
Ltmp3:
Lfunc_end0:
.cfi_endproc
## -- End function
.section __DWARF,__debug_str,regular,debug
Linfo_string:
.asciz "clang version 9.0.0 (git@github.com:llvm/llvm-project.git 10de39548976ae224709acdc1c337e33cf12f3c0)" ## string offset=0
.asciz "a.cpp" ## string offset=100
.asciz "/private/tmp" ## string offset=106
.asciz "foo" ## string offset=119
.asciz "_Z3foov" ## string offset=123
.asciz "e" ## string offset=131
.asciz "f" ## string offset=133
.asciz "char" ## string offset=135
.asciz "__ARRAY_SIZE_TYPE__" ## string offset=140
.asciz "g" ## string offset=160
.asciz "E" ## string offset=162
.section __DWARF,__debug_loc,regular,debug
Lsection_debug_loc:
Ldebug_loc0:
.set Lset0, Ltmp1-Lfunc_begin0
.quad Lset0
.set Lset1, Ltmp2-Lfunc_begin0
.quad Lset1
.short 1 ## Loc expr size
.byte 80 ## DW_OP_reg0
.quad 0
.quad 0
.section __DWARF,__debug_abbrev,regular,debug
Lsection_abbrev:
.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 6 ## DW_FORM_data4
.byte 27 ## DW_AT_comp_dir
.byte 14 ## DW_FORM_strp
.ascii "\264B" ## DW_AT_GNU_pubnames
.byte 12 ## DW_FORM_flag
.ascii "\341\177" ## DW_AT_APPLE_optimized
.byte 12 ## DW_FORM_flag
.byte 17 ## DW_AT_low_pc
.byte 1 ## DW_FORM_addr
.byte 18 ## DW_AT_high_pc
.byte 1 ## DW_FORM_addr
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 2 ## Abbreviation Code
.byte 46 ## DW_TAG_subprogram
.byte 1 ## DW_CHILDREN_yes
.byte 17 ## DW_AT_low_pc
.byte 1 ## DW_FORM_addr
.byte 18 ## DW_AT_high_pc
.byte 1 ## DW_FORM_addr
.byte 64 ## DW_AT_frame_base
.byte 10 ## DW_FORM_block1
.ascii "\207@" ## DW_AT_MIPS_linkage_name
.byte 14 ## DW_FORM_strp
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 63 ## DW_AT_external
.byte 12 ## DW_FORM_flag
.ascii "\341\177" ## DW_AT_APPLE_optimized
.byte 12 ## DW_FORM_flag
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 3 ## Abbreviation Code
.byte 52 ## DW_TAG_variable
.byte 0 ## DW_CHILDREN_no
.byte 2 ## DW_AT_location
.byte 6 ## DW_FORM_data4
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 4 ## Abbreviation Code
.byte 19 ## DW_TAG_structure_type
.byte 1 ## DW_CHILDREN_yes
.byte 54 ## DW_AT_calling_convention
.byte 11 ## DW_FORM_data1
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 11 ## DW_AT_byte_size
.byte 5 ## DW_FORM_data2
.byte 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 5 ## Abbreviation Code
.byte 13 ## DW_TAG_member
.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 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 56 ## DW_AT_data_member_location
.byte 10 ## DW_FORM_block1
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 6 ## Abbreviation Code
.byte 1 ## DW_TAG_array_type
.byte 1 ## DW_CHILDREN_yes
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 7 ## Abbreviation Code
.byte 33 ## DW_TAG_subrange_type
.byte 0 ## DW_CHILDREN_no
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 55 ## DW_AT_count
.byte 5 ## DW_FORM_data2
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 8 ## 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 9 ## Abbreviation Code
.byte 36 ## DW_TAG_base_type
.byte 0 ## DW_CHILDREN_no
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 11 ## DW_AT_byte_size
.byte 11 ## DW_FORM_data1
.byte 62 ## DW_AT_encoding
.byte 11 ## DW_FORM_data1
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 10 ## Abbreviation Code
.byte 15 ## DW_TAG_pointer_type
.byte 0 ## DW_CHILDREN_no
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 0 ## EOM(3)
.section __DWARF,__debug_info,regular,debug
Lsection_info:
Lcu_begin0:
.set Lset2, Ldebug_info_end0-Ldebug_info_start0 ## Length of Unit
.long Lset2
Ldebug_info_start0:
.short 2 ## DWARF version number
.set Lset3, Lsection_abbrev-Lsection_abbrev ## Offset Into Abbrev. Section
.long Lset3
.byte 8 ## Address Size (in bytes)
.byte 1 ## Abbrev [1] 0xb:0xa2 DW_TAG_compile_unit
.long 0 ## DW_AT_producer
.short 4 ## DW_AT_language
.long 100 ## DW_AT_name
.set Lset4, Lline_table_start0-Lsection_line ## DW_AT_stmt_list
.long Lset4
.long 106 ## DW_AT_comp_dir
.byte 1 ## DW_AT_GNU_pubnames
.byte 1 ## DW_AT_APPLE_optimized
.quad Lfunc_begin0 ## DW_AT_low_pc
.quad Lfunc_end0 ## DW_AT_high_pc
.byte 2 ## Abbrev [2] 0x30:0x33 DW_TAG_subprogram
.quad Lfunc_begin0 ## DW_AT_low_pc
.quad Lfunc_end0 ## DW_AT_high_pc
.byte 1 ## DW_AT_frame_base
.byte 86
.long 123 ## DW_AT_MIPS_linkage_name
.long 119 ## DW_AT_name
.byte 1 ## DW_AT_decl_file
.byte 5 ## DW_AT_decl_line
.long 99 ## DW_AT_type
.byte 1 ## DW_AT_external
.byte 1 ## DW_AT_APPLE_optimized
.byte 3 ## Abbrev [3] 0x53:0xf DW_TAG_variable
.set Lset5, Ldebug_loc0-Lsection_debug_loc ## DW_AT_location
.long Lset5
.long 162 ## DW_AT_name
.byte 1 ## DW_AT_decl_file
.byte 6 ## DW_AT_decl_line
.long 167 ## DW_AT_type
.byte 0 ## End Of Children Mark
.byte 4 ## Abbrev [4] 0x63:0x29 DW_TAG_structure_type
.byte 5 ## DW_AT_calling_convention
.long 131 ## DW_AT_name
.short 16385 ## DW_AT_byte_size
.byte 1 ## DW_AT_decl_file
.byte 1 ## DW_AT_decl_line
.byte 5 ## Abbrev [5] 0x6d:0xe DW_TAG_member
.long 133 ## DW_AT_name
.long 140 ## DW_AT_type
.byte 1 ## DW_AT_decl_file
.byte 2 ## DW_AT_decl_line
.byte 2 ## DW_AT_data_member_location
.byte 35
.byte 0
.byte 5 ## Abbrev [5] 0x7b:0x10 DW_TAG_member
.long 160 ## DW_AT_name
.long 153 ## DW_AT_type
.byte 1 ## DW_AT_decl_file
.byte 3 ## DW_AT_decl_line
.byte 4 ## DW_AT_data_member_location
.byte 35
.ascii "\200\200\001"
.byte 0 ## End Of Children Mark
.byte 6 ## Abbrev [6] 0x8c:0xd DW_TAG_array_type
.long 153 ## DW_AT_type
.byte 7 ## Abbrev [7] 0x91:0x7 DW_TAG_subrange_type
.long 160 ## DW_AT_type
.short 16384 ## DW_AT_count
.byte 0 ## End Of Children Mark
.byte 8 ## Abbrev [8] 0x99:0x7 DW_TAG_base_type
.long 135 ## DW_AT_name
.byte 6 ## DW_AT_encoding
.byte 1 ## DW_AT_byte_size
.byte 9 ## Abbrev [9] 0xa0:0x7 DW_TAG_base_type
.long 140 ## DW_AT_name
.byte 8 ## DW_AT_byte_size
.byte 7 ## DW_AT_encoding
.byte 10 ## Abbrev [10] 0xa7:0x5 DW_TAG_pointer_type
.long 99 ## DW_AT_type
.byte 0 ## End Of Children Mark
Ldebug_info_end0:
.section __DWARF,__debug_macinfo,regular,debug
Ldebug_macinfo:
.byte 0 ## End Of Macro List Mark
.subsections_via_symbols
.section __DWARF,__debug_line,regular,debug
Lsection_line:
Lline_table_start0:

331
llvm/test/tools/llvm-dwarfdump/X86/formclass4.s Normal file
View File

@ -0,0 +1,331 @@
# Source:
# struct e {
# enum {} f[16384];
# short g;
# };
# e foo() {
# auto E = new e;
# return *E;
# }
# Compile with:
# clang -O2 -gdwarf-4 -S a.cpp -o a4.s
# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o %t.o
# RUN: llvm-dwarfdump -debug-info -name g %t.o | FileCheck %s
# CHECK: DW_TAG_member
# CHECK: DW_AT_name ("g")
# CHECK: DW_AT_data_member_location (0x4000)
.section __TEXT,__text,regular,pure_instructions
.macosx_version_min 10, 14
.globl __Z3foov ## -- Begin function _Z3foov
.p2align 4, 0x90
__Z3foov: ## @_Z3foov
Lfunc_begin0:
.file 1 "/private/tmp" "a.cpp"
.loc 1 5 0 ## a.cpp:5:0
.cfi_startproc
## %bb.0: ## %entry
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
pushq %rbx
pushq %rax
.cfi_offset %rbx, -24
movq %rdi, %rbx
Ltmp0:
.loc 1 6 12 prologue_end ## a.cpp:6:12
movl $16385, %edi ## imm = 0x4001
callq __Znwm
Ltmp1:
##DEBUG_VALUE: foo:E <- $rax
.loc 1 7 10 ## a.cpp:7:10
movl $16385, %edx ## imm = 0x4001
movq %rbx, %rdi
movq %rax, %rsi
callq _memcpy
Ltmp2:
.loc 1 8 1 ## a.cpp:8:1
movq %rbx, %rax
addq $8, %rsp
popq %rbx
popq %rbp
retq
Ltmp3:
Lfunc_end0:
.cfi_endproc
## -- End function
.section __DWARF,__debug_str,regular,debug
Linfo_string:
.asciz "clang version 9.0.0 (git@github.com:llvm/llvm-project.git 10de39548976ae224709acdc1c337e33cf12f3c0)" ## string offset=0
.asciz "a.cpp" ## string offset=100
.asciz "/private/tmp" ## string offset=106
.asciz "foo" ## string offset=119
.asciz "_Z3foov" ## string offset=123
.asciz "e" ## string offset=131
.asciz "f" ## string offset=133
.asciz "char" ## string offset=135
.asciz "__ARRAY_SIZE_TYPE__" ## string offset=140
.asciz "g" ## string offset=160
.asciz "E" ## string offset=162
.section __DWARF,__debug_loc,regular,debug
Lsection_debug_loc:
Ldebug_loc0:
.set Lset0, Ltmp1-Lfunc_begin0
.quad Lset0
.set Lset1, Ltmp2-Lfunc_begin0
.quad Lset1
.short 1 ## Loc expr size
.byte 80 ## DW_OP_reg0
.quad 0
.quad 0
.section __DWARF,__debug_abbrev,regular,debug
Lsection_abbrev:
.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
.ascii "\341\177" ## DW_AT_APPLE_optimized
.byte 25 ## DW_FORM_flag_present
.byte 17 ## DW_AT_low_pc
.byte 1 ## DW_FORM_addr
.byte 18 ## DW_AT_high_pc
.byte 6 ## DW_FORM_data4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 2 ## Abbreviation Code
.byte 46 ## DW_TAG_subprogram
.byte 1 ## DW_CHILDREN_yes
.byte 17 ## DW_AT_low_pc
.byte 1 ## DW_FORM_addr
.byte 18 ## DW_AT_high_pc
.byte 6 ## DW_FORM_data4
.byte 64 ## DW_AT_frame_base
.byte 24 ## DW_FORM_exprloc
.byte 122 ## DW_AT_call_all_calls
.byte 25 ## DW_FORM_flag_present
.byte 110 ## DW_AT_linkage_name
.byte 14 ## DW_FORM_strp
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 63 ## DW_AT_external
.byte 25 ## DW_FORM_flag_present
.ascii "\341\177" ## DW_AT_APPLE_optimized
.byte 25 ## DW_FORM_flag_present
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 3 ## Abbreviation Code
.byte 52 ## DW_TAG_variable
.byte 0 ## DW_CHILDREN_no
.byte 2 ## DW_AT_location
.byte 23 ## DW_FORM_sec_offset
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 4 ## Abbreviation Code
.byte 19 ## DW_TAG_structure_type
.byte 1 ## DW_CHILDREN_yes
.byte 54 ## DW_AT_calling_convention
.byte 11 ## DW_FORM_data1
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 11 ## DW_AT_byte_size
.byte 5 ## DW_FORM_data2
.byte 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 5 ## Abbreviation Code
.byte 13 ## DW_TAG_member
.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 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 56 ## DW_AT_data_member_location
.byte 11 ## DW_FORM_data1
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 6 ## Abbreviation Code
.byte 13 ## DW_TAG_member
.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 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 56 ## DW_AT_data_member_location
.byte 5 ## DW_FORM_data2
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 7 ## Abbreviation Code
.byte 1 ## DW_TAG_array_type
.byte 1 ## DW_CHILDREN_yes
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 8 ## Abbreviation Code
.byte 33 ## DW_TAG_subrange_type
.byte 0 ## DW_CHILDREN_no
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 55 ## DW_AT_count
.byte 5 ## DW_FORM_data2
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 9 ## 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 10 ## Abbreviation Code
.byte 36 ## DW_TAG_base_type
.byte 0 ## DW_CHILDREN_no
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 11 ## DW_AT_byte_size
.byte 11 ## DW_FORM_data1
.byte 62 ## DW_AT_encoding
.byte 11 ## DW_FORM_data1
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 11 ## Abbreviation Code
.byte 15 ## DW_TAG_pointer_type
.byte 0 ## DW_CHILDREN_no
.byte 73 ## DW_AT_type
.byte 19 ## DW_FORM_ref4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 0 ## EOM(3)
.section __DWARF,__debug_info,regular,debug
Lsection_info:
Lcu_begin0:
.set Lset2, Ldebug_info_end0-Ldebug_info_start0 ## Length of Unit
.long Lset2
Ldebug_info_start0:
.short 4 ## DWARF version number
.set Lset3, Lsection_abbrev-Lsection_abbrev ## Offset Into Abbrev. Section
.long Lset3
.byte 8 ## Address Size (in bytes)
.byte 1 ## Abbrev [1] 0xb:0x91 DW_TAG_compile_unit
.long 0 ## DW_AT_producer
.short 4 ## DW_AT_language
.long 100 ## DW_AT_name
.set Lset4, Lline_table_start0-Lsection_line ## DW_AT_stmt_list
.long Lset4
.long 106 ## DW_AT_comp_dir
## DW_AT_GNU_pubnames
## DW_AT_APPLE_optimized
.quad Lfunc_begin0 ## DW_AT_low_pc
.set Lset5, Lfunc_end0-Lfunc_begin0 ## DW_AT_high_pc
.long Lset5
.byte 2 ## Abbrev [2] 0x2a:0x2d DW_TAG_subprogram
.quad Lfunc_begin0 ## DW_AT_low_pc
.set Lset6, Lfunc_end0-Lfunc_begin0 ## DW_AT_high_pc
.long Lset6
.byte 1 ## DW_AT_frame_base
.byte 86
## DW_AT_call_all_calls
.long 123 ## DW_AT_linkage_name
.long 119 ## DW_AT_name
.byte 1 ## DW_AT_decl_file
.byte 5 ## DW_AT_decl_line
.long 87 ## DW_AT_type
## DW_AT_external
## DW_AT_APPLE_optimized
.byte 3 ## Abbrev [3] 0x47:0xf DW_TAG_variable
.set Lset7, Ldebug_loc0-Lsection_debug_loc ## DW_AT_location
.long Lset7
.long 162 ## DW_AT_name
.byte 1 ## DW_AT_decl_file
.byte 6 ## DW_AT_decl_line
.long 150 ## DW_AT_type
.byte 0 ## End Of Children Mark
.byte 4 ## Abbrev [4] 0x57:0x24 DW_TAG_structure_type
.byte 5 ## DW_AT_calling_convention
.long 131 ## DW_AT_name
.short 16385 ## DW_AT_byte_size
.byte 1 ## DW_AT_decl_file
.byte 1 ## DW_AT_decl_line
.byte 5 ## Abbrev [5] 0x61:0xc DW_TAG_member
.long 133 ## DW_AT_name
.long 123 ## DW_AT_type
.byte 1 ## DW_AT_decl_file
.byte 2 ## DW_AT_decl_line
.byte 0 ## DW_AT_data_member_location
.byte 6 ## Abbrev [6] 0x6d:0xd DW_TAG_member
.long 160 ## DW_AT_name
.long 136 ## DW_AT_type
.byte 1 ## DW_AT_decl_file
.byte 3 ## DW_AT_decl_line
.short 16384 ## DW_AT_data_member_location
.byte 0 ## End Of Children Mark
.byte 7 ## Abbrev [7] 0x7b:0xd DW_TAG_array_type
.long 136 ## DW_AT_type
.byte 8 ## Abbrev [8] 0x80:0x7 DW_TAG_subrange_type
.long 143 ## DW_AT_type
.short 16384 ## DW_AT_count
.byte 0 ## End Of Children Mark
.byte 9 ## Abbrev [9] 0x88:0x7 DW_TAG_base_type
.long 135 ## DW_AT_name
.byte 6 ## DW_AT_encoding
.byte 1 ## DW_AT_byte_size
.byte 10 ## Abbrev [10] 0x8f:0x7 DW_TAG_base_type
.long 140 ## DW_AT_name
.byte 8 ## DW_AT_byte_size
.byte 7 ## DW_AT_encoding
.byte 11 ## Abbrev [11] 0x96:0x5 DW_TAG_pointer_type
.long 87 ## DW_AT_type
.byte 0 ## End Of Children Mark
Ldebug_info_end0:
.section __DWARF,__debug_macinfo,regular,debug
Ldebug_macinfo:
.byte 0 ## End Of Macro List Mark
.subsections_via_symbols
.section __DWARF,__debug_line,regular,debug
Lsection_line:
Lline_table_start0: