This is an archive of the discontinued LLVM Phabricator instance.

Paths

Table of Contentst

-
lldb/
-
source/Core/
-
Core/
3/3
ValueObjectVariable.cpp
-
test/Shell/SymbolFile/DWARF/
-
Shell/
-
SymbolFile/
-
DWARF/
5/5
DW_AT_const_value.s

Differential D86311

Fix how ValueObjectVariable handles DW_AT_const_value when the DWARFExpression holds the data that represents a constant value
ClosedPublic

Authored by shafik on Aug 20 2020, 11:22 AM.

Download Raw Diff

Details

Reviewers

aprantl
friss
labath
jingham
vsk
jdoerfert

Commits

rG93b255142bb7: [LLDB] Fix how ValueObjectVariable handles DW_AT_const_value when the…

Summary

In some cases when we have a DW_AT_const_value and the data can be found in the DWARFExpression then ValueObjectVariable does not handle it properly and we end up with an extracting data from value failed error:

(lldb) target var constant
(U) constant = {
  raw = <extracting data from value failed>

   = (a = <extracting data from value failed>, b = <extracting data from value failed>, c = <extracting data from value failed>, d = <extracting data from value failed>, e = <extracting data from value failed>, f = <extracting data from value failed>)
}

This should fix that case.

The test is a very stripped down assembly file since reproducing this relies on the results of compiling with -O1 which may not be stable over time.

Diff Detail

Event Timeline

shafik requested review of this revision.Aug 20 2020, 11:22 AM

shafik created this revision.

Herald added a reviewer: jdoerfert. · View Herald TranscriptAug 20 2020, 11:22 AM

Herald added a subscriber: sstefan1. · View Herald Transcript

The code looks fine, I think the test needs an extra REQUIRES.

lldb/source/Core/ValueObjectVariable.cpp
137	I guess this looks reasonable.
lldb/test/Shell/SymbolFile/DWARF/DW_AT_const_value.s
2	I think this is missing a REQUIRES: line that checks for an x86 target?
11	This sentence is complicated to parse.

LGTM, modulo the defensive check. Incidentally, I was just looking at a DW_AT_const_value bug, but I think it's a different issue than this one.

lldb/source/Core/ValueObjectVariable.cpp
136	I doubt this check is necessary -- surely we should be able to rely on `GetExpressionData` setting the data extractor to something reasonable if it returns success. If anything, it would be nice to make a test with an empty DW_AT_const_value, which checks that lldb does something reasonable. It shouldn't that hard -- copy the DW_TAG_variable abbreviation, change DW_AT_const_value to DW_FORM_block, and make a new variable DIE with an empty block.
lldb/test/Shell/SymbolFile/DWARF/DW_AT_const_value.s
11	It may be enough to say "Check that we're able to display variables whose value is given by DW_AT_const_value" -- the relationship between (or even existance) of ValueObjectVariable and DWARFExpression may change, but the test case is sufficiently generic to remain valid. Though, given the test name, even that sentence is pretty redundant.

labath added a child revision: D86348: [lldb/DWARF] More DW_AT_const_value fixes.Aug 21 2020, 6:22 AM

shafik marked an inline comment as done.Aug 21 2020, 6:47 AM

shafik added inline comments.

lldb/test/Shell/SymbolFile/DWARF/DW_AT_const_value.s
2	I did not use that in D85376, is there something different in this case?

labath added inline comments.Aug 21 2020, 9:49 AM

lldb/test/Shell/SymbolFile/DWARF/DW_AT_const_value.s
2	All tests using x86 assembly technically require that, but I don't believe we have a bot which is configured to build without that target, so nothing enforces that. I'm pretty sure there are other tests that need this stanza, but don't have it.

@shafik would you mind preparing a separate commit that add the REQUIRES everywhere it is needed, or if there are many, create an x86 subdir with an implicit requirement (like we do in the llvm/test/debuginfo tests)?
If it weren't for Rosetta, these would break on Apple Silicon machines, for example.

aprantl accepted this revision.Aug 21 2020, 1:09 PM

This revision is now accepted and ready to land.Aug 21 2020, 1:09 PM

-Add REQUIRES x86

Fix-up the comments in the test

shafik added inline comments.Aug 24 2020, 2:14 PM

lldb/source/Core/ValueObjectVariable.cpp
136	I see what you are saying, let me verify this in a separate PR and if that bears out then we can remove this check.

Closed by commit rG93b255142bb7: [LLDB] Fix how ValueObjectVariable handles DW_AT_const_value when the… (authored by shafik). · Explain WhyAug 24 2020, 3:17 PM

This revision was automatically updated to reflect the committed changes.

shafik added a commit: rG93b255142bb7: [LLDB] Fix how ValueObjectVariable handles DW_AT_const_value when the….

Herald added a project: Restricted Project. · View Herald TranscriptAug 24 2020, 3:17 PM

Revision Contents

Path

Size

lldb/

source/

Core/

ValueObjectVariable.cpp

5 lines

test/

Shell/

SymbolFile/

DWARF/

DW_AT_const_value.s

408 lines

Diff 286863

lldb/source/Core/ValueObjectVariable.cpp

Show First 20 Lines • Show All 126 Lines • ▼ Show 20 Lines	bool ValueObjectVariable::UpdateValue() {
m_error.Clear();		m_error.Clear();

Variable *variable = m_variable_sp.get();		Variable *variable = m_variable_sp.get();
DWARFExpression &expr = variable->LocationExpression();		DWARFExpression &expr = variable->LocationExpression();

if (variable->GetLocationIsConstantValueData()) {		if (variable->GetLocationIsConstantValueData()) {
// expr doesn't contain DWARF bytes, it contains the constant variable		// expr doesn't contain DWARF bytes, it contains the constant variable
// value bytes themselves...		// value bytes themselves...
if (expr.GetExpressionData(m_data))		if (expr.GetExpressionData(m_data)) {
		if (m_data.GetDataStart() && m_data.GetByteSize())
		labathUnsubmitted Done Reply Inline Actions I doubt this check is necessary -- surely we should be able to rely on `GetExpressionData` setting the data extractor to something reasonable if it returns success. If anything, it would be nice to make a test with an empty DW_AT_const_value, which checks that lldb does something reasonable. It shouldn't that hard -- copy the DW_TAG_variable abbreviation, change DW_AT_const_value to DW_FORM_block, and make a new variable DIE with an empty block. labath: I doubt this check is necessary -- surely we should be able to rely on `GetExpressionData`…
		shafikAuthorUnsubmitted Done Reply Inline Actions I see what you are saying, let me verify this in a separate PR and if that bears out then we can remove this check. shafik: I see what you are saying, let me verify this in a separate PR and if that bears out then we…
		m_value.SetBytes(m_data.GetDataStart(), m_data.GetByteSize());
		aprantlUnsubmitted Done Reply Inline Actions I guess this looks reasonable. aprantl: I guess this looks reasonable.
m_value.SetContext(Value::eContextTypeVariable, variable);		m_value.SetContext(Value::eContextTypeVariable, variable);
		}
else		else
m_error.SetErrorString("empty constant data");		m_error.SetErrorString("empty constant data");
// constant bytes can't be edited - sorry		// constant bytes can't be edited - sorry
m_resolved_value.SetContext(Value::eContextTypeInvalid, nullptr);		m_resolved_value.SetContext(Value::eContextTypeInvalid, nullptr);
} else {		} else {
lldb::addr_t loclist_base_load_addr = LLDB_INVALID_ADDRESS;		lldb::addr_t loclist_base_load_addr = LLDB_INVALID_ADDRESS;
ExecutionContext exe_ctx(GetExecutionContextRef());		ExecutionContext exe_ctx(GetExecutionContextRef());

▲ Show 20 Lines • Show All 265 Lines • Show Last 20 Lines

lldb/test/Shell/SymbolFile/DWARF/DW_AT_const_value.s

This file was added.

				# RUN: llvm-mc -filetype=obj -o %t -triple x86_64-apple-macosx10.15.0 %s
				# RUN: %lldb %t -o "target variable constant" -b \| FileCheck %s
				aprantlUnsubmitted Done Reply Inline Actions I think this is missing a REQUIRES: line that checks for an x86 target? aprantl: I think this is missing a REQUIRES: line that checks for an x86 target?
				shafikAuthorUnsubmitted Done Reply Inline Actions I did not use that in D85376, is there something different in this case? shafik: I did not use that in D85376, is there something different in this case?
				labathUnsubmitted Done Reply Inline Actions All tests using x86 assembly technically require that, but I don't believe we have a bot which is configured to build without that target, so nothing enforces that. I'm pretty sure there are other tests that need this stanza, but don't have it. labath: All tests using x86 assembly technically require that, but I don't believe we have a bot which…

				# CHECK: (lldb) target variable constant
				# CHECK: (U) constant = {
				# CHECK: raw = 1688469761
				# CHECK: = (a = 1, b = 1, c = 36, d = 2, e = 36, f = 1)
				# CHECK: }

				# This is testing when how ValueObjectVariable handles the case where the
				# DWARFExpression holds the data that represents a constant value.
				aprantlUnsubmitted Done Reply Inline Actions This sentence is complicated to parse. aprantl: This sentence is complicated to parse.
				labathUnsubmitted Done Reply Inline Actions It may be enough to say "Check that we're able to display variables whose value is given by DW_AT_const_value" -- the relationship between (or even existance) of ValueObjectVariable and DWARFExpression may change, but the test case is sufficiently generic to remain valid. Though, given the test name, even that sentence is pretty redundant. labath: It may be enough to say "Check that we're able to display variables whose value is given by…
				# Compile at -O1 allows us to capture this case. Below is the code used
				# to generate the assembly:
				#
				# typedef union
				# {
				# unsigned raw;
				# struct
				# {
				# unsigned a : 8;
				# unsigned b : 8;
				# unsigned c : 6;
				# unsigned d : 2;
				# unsigned e : 6;
				# unsigned f : 2;
				# } ;
				# } U;
				#
				# static U __attribute__((used)) _type_anchor;
				# static const int constant = 0x64A40101;
				#
				# int g() { return constant; }
				#
				# int main() {
				# U u;
				# u.raw = 0x64A40101;
				# }
				#
				# Compiled as follows:
				#
				# clang -gdwarf-4 -O1 dw_at_const_value_bug.c -S -o dw_at_const_value_bug.s
				#
				# I was able to obtain a global of type U with DW_AT_const_value but was able
				# to using int. This required modifying the DW_AT_type of constant to be type
				# U. After that stripping as much of the assembly as possible to give us a
				# smaller reproducer.


				.zerofill __DATA,__bss,__type_anchor,4,2 ## @_type_anchor
				.no_dead_strip __type_anchor
				.section __DWARF,__debug_str,regular,debug
				Linfo_string:
				.zero 90
				.asciz "constant" ## string offset=90
				.asciz "int" ## string offset=99
				.asciz "_type_anchor" ## string offset=103
				.asciz "U" ## string offset=116
				.asciz "raw" ## string offset=118
				.asciz "unsigned int" ## string offset=122
				.asciz "a" ## string offset=135
				.asciz "b" ## string offset=137
				.asciz "c" ## string offset=139
				.asciz "d" ## string offset=141
				.asciz "e" ## string offset=143
				.asciz "f" ## string offset=145
				.asciz "g" ## string offset=147
				.asciz "main" ## string offset=149
				.asciz "u" ## string offset=154
				.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 66 ## 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 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 58 ## DW_AT_decl_file
				.byte 11 ## DW_FORM_data1
				.byte 59 ## DW_AT_decl_line
				.byte 11 ## DW_FORM_data1
				.byte 28 ## DW_AT_const_value
				.byte 15 ## DW_FORM_udata
				.byte 0 ## EOM(1)
				.byte 0 ## EOM(2)
				.byte 3 ## Abbreviation Code
				.byte 38 ## DW_TAG_const_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 4 ## 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 5 ## 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 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 6 ## Abbreviation Code
				.byte 22 ## DW_TAG_typedef
				.byte 0 ## DW_CHILDREN_no
				.byte 73 ## DW_AT_type
				.byte 19 ## DW_FORM_ref4
				.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 0 ## EOM(1)
				.byte 0 ## EOM(2)
				.byte 7 ## Abbreviation Code
				.byte 23 ## DW_TAG_union_type
				.byte 1 ## DW_CHILDREN_yes
				.byte 11 ## DW_AT_byte_size
				.byte 11 ## DW_FORM_data1
				.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 8 ## 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 9 ## Abbreviation Code
				.byte 13 ## DW_TAG_member
				.byte 0 ## DW_CHILDREN_no
				.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 10 ## Abbreviation Code
				.byte 19 ## DW_TAG_structure_type
				.byte 1 ## DW_CHILDREN_yes
				.byte 11 ## DW_AT_byte_size
				.byte 11 ## DW_FORM_data1
				.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 11 ## 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 13 ## DW_AT_bit_size
				.byte 11 ## DW_FORM_data1
				.byte 107 ## DW_AT_data_bit_offset
				.byte 11 ## DW_FORM_data1
				.byte 0 ## EOM(1)
				.byte 0 ## EOM(2)
				.byte 12 ## Abbreviation Code
				.byte 46 ## DW_TAG_subprogram
				.byte 0 ## DW_CHILDREN_no
				.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 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 13 ## 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 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 14 ## Abbreviation Code
				.byte 52 ## DW_TAG_variable
				.byte 0 ## DW_CHILDREN_no
				.byte 28 ## DW_AT_const_value
				.byte 15 ## DW_FORM_udata
				.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 0 ## EOM(3)
				.section __DWARF,__debug_info,regular,debug
				Lsection_info:
				Lcu_begin0:
				.set Lset0, Ldebug_info_end0-Ldebug_info_start0 ## Length of Unit
				.long Lset0
				Ldebug_info_start0:
				.short 4 ## DWARF version number
				.set Lset1, Lsection_abbrev-Lsection_abbrev ## Offset Into Abbrev. Section
				.long Lset1
				.byte 8 ## Address Size (in bytes)
				.byte 1 ## Abbrev [1] 0xb:0x112 DW_TAG_compile_unit
				.long 0 ## DW_AT_producer
				.short 12 ## DW_AT_language
				.long 47 ## DW_AT_name
				.long 0 ## DW_AT_stmt_list
				.long 71 ## DW_AT_comp_dir
				## DW_AT_GNU_pubnames
				## DW_AT_APPLE_optimized
				.quad 0 ## DW_AT_low_pc
				.long 0
				.byte 2 ## Abbrev [2] 0x2a:0x10 DW_TAG_variable
				.long 90 ## DW_AT_name
				.long 91 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 16 ## DW_AT_decl_line
				.ascii "\201\202\220\245\006" ## DW_AT_const_value
				.byte 3 ## Abbrev [3] 0x3a:0x5 DW_TAG_const_type
				.long 63 ## DW_AT_type
				.byte 4 ## Abbrev [4] 0x3f:0x7 DW_TAG_base_type
				.long 99 ## DW_AT_name
				.byte 5 ## DW_AT_encoding
				.byte 4 ## DW_AT_byte_size
				.byte 5 ## Abbrev [5] 0x46:0x15 DW_TAG_variable
				.long 103 ## DW_AT_name
				.long 91 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 15 ## DW_AT_decl_line
				.byte 9 ## DW_AT_location
				.byte 3
				.quad __type_anchor
				.byte 6 ## Abbrev [6] 0x5b:0xb DW_TAG_typedef
				.long 102 ## DW_AT_type
				.long 116 ## DW_AT_name
				.byte 1 ## DW_AT_decl_file
				.byte 13 ## DW_AT_decl_line
				.byte 7 ## Abbrev [7] 0x66:0x6c DW_TAG_union_type
				.byte 4 ## DW_AT_byte_size
				.byte 1 ## DW_AT_decl_file
				.byte 1 ## DW_AT_decl_line
				.byte 8 ## Abbrev [8] 0x6a:0xc DW_TAG_member
				.long 118 ## DW_AT_name
				.long 210 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 3 ## DW_AT_decl_line
				.byte 0 ## DW_AT_data_member_location
				.byte 9 ## Abbrev [9] 0x76:0x8 DW_TAG_member
				.long 126 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 4 ## DW_AT_decl_line
				.byte 0 ## DW_AT_data_member_location
				.byte 10 ## Abbrev [10] 0x7e:0x53 DW_TAG_structure_type
				.byte 4 ## DW_AT_byte_size
				.byte 1 ## DW_AT_decl_file
				.byte 4 ## DW_AT_decl_line
				.byte 11 ## Abbrev [11] 0x82:0xd DW_TAG_member
				.long 135 ## DW_AT_name
				.long 210 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 6 ## DW_AT_decl_line
				.byte 8 ## DW_AT_bit_size
				.byte 0 ## DW_AT_data_bit_offset
				.byte 11 ## Abbrev [11] 0x8f:0xd DW_TAG_member
				.long 137 ## DW_AT_name
				.long 210 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 7 ## DW_AT_decl_line
				.byte 8 ## DW_AT_bit_size
				.byte 8 ## DW_AT_data_bit_offset
				.byte 11 ## Abbrev [11] 0x9c:0xd DW_TAG_member
				.long 139 ## DW_AT_name
				.long 210 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 8 ## DW_AT_decl_line
				.byte 6 ## DW_AT_bit_size
				.byte 16 ## DW_AT_data_bit_offset
				.byte 11 ## Abbrev [11] 0xa9:0xd DW_TAG_member
				.long 141 ## DW_AT_name
				.long 210 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 9 ## DW_AT_decl_line
				.byte 2 ## DW_AT_bit_size
				.byte 22 ## DW_AT_data_bit_offset
				.byte 11 ## Abbrev [11] 0xb6:0xd DW_TAG_member
				.long 143 ## DW_AT_name
				.long 210 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 10 ## DW_AT_decl_line
				.byte 6 ## DW_AT_bit_size
				.byte 24 ## DW_AT_data_bit_offset
				.byte 11 ## Abbrev [11] 0xc3:0xd DW_TAG_member
				.long 145 ## DW_AT_name
				.long 210 ## DW_AT_type
				.byte 1 ## DW_AT_decl_file
				.byte 11 ## DW_AT_decl_line
				.byte 2 ## DW_AT_bit_size
				.byte 30 ## DW_AT_data_bit_offset
				.byte 0 ## End Of Children Mark
				.byte 0 ## End Of Children Mark
				.byte 4 ## Abbrev [4] 0xd2:0x7 DW_TAG_base_type
				.long 122 ## DW_AT_name
				.byte 7 ## DW_AT_encoding
				.byte 4 ## DW_AT_byte_size
				.byte 14 ## Abbrev [14] 0x10b:0x10 DW_TAG_variable
				.ascii "\201\202\220\245\006" ## DW_AT_const_value
				.long 154 ## DW_AT_name
				.byte 1 ## DW_AT_decl_file
				.byte 21 ## DW_AT_decl_line
				.long 91 ## DW_AT_type
				.byte 0 ## End Of Children Mark
				.byte 0 ## End Of Children Mark
				Ldebug_info_end0: