This is an archive of the discontinued LLVM Phabricator instance.

Differential D142552

[lldb] Make GetDIENamesAndRanges() allow 0-valued decl and call lines
ClosedPublic

Authored by dstenb on Jan 25 2023, 8:18 AM.

Details

Reviewers
jasonmolenda
clayborg
ayermolo
shafik
jdoerfert
Commits
rG98c3dc3fa748: [lldb] Make GetDIENamesAndRanges() allow 0-valued decl and call lines
Summary

In an upcoming patch, D142556, Clang is proposed to be changed to emit
line locations that are inlined at line 0. This clashed with the behavior of
GetDIENamesAndRanges() which used 0 as a default value to determine if
file, line or column numbers had been set. Users of that function then
checked for any non-0 values when setting up the call site:

if (call_file != 0 || call_line != 0 || call_column != 0)
  [...]

which did not work with the Clang change since all three values then
could be 0.

This changes the function to use std::optional to catch non-set values
instead.

Diff Detail

Event Timeline

dstenb created this revision.Jan 25 2023, 8:18 AM
Herald added a reviewer: shafik. · View Herald TranscriptJan 25 2023, 8:18 AM
Herald added a project: Restricted Project. · View Herald Transcript
Herald added a subscriber: JDevlieghere. · View Herald Transcript
dstenb requested review of this revision.Jan 25 2023, 8:18 AM
Herald added a reviewer: jdoerfert. · View Herald TranscriptJan 25 2023, 8:18 AM
Herald added subscribers: lldb-commits, sstefan1. · View Herald Transcript
dstenb added a comment.Jan 25 2023, 8:21 AM

First time looking at LLDB, so I had trouble finding a suitable way to create a reproducer for this. I would be happy to change to another type of lit test if that is more suitable.

Harbormaster completed remote builds in B209878: Diff 492121.Jan 25 2023, 8:21 AM
dstenb mentioned this in D142556: [DebugInfo] Merge partially matching chains of inlined locations.Jan 25 2023, 8:26 AM
dstenb added a child revision: D142556: [DebugInfo] Merge partially matching chains of inlined locations.
dstenb edited the summary of this revision. (Show Details)Jan 25 2023, 8:37 AM
clayborg accepted this revision.Jan 26 2023, 1:40 PM

As long as there are no regressions in the test suite this looks good to me

This revision is now accepted and ready to land.Jan 26 2023, 1:40 PM
aeubanks removed a reviewer: aeubanks.Jan 26 2023, 1:52 PM
dstenb added a comment.Mar 6 2023, 5:22 AM
In D142552#4083939, @clayborg wrote:

As long as there are no regressions in the test suite this looks good to me

Thanks, and sorry for the delay with landing this! I have ran check-lldb. I will land this shortly.

Closed by commit rG98c3dc3fa748: [lldb] Make GetDIENamesAndRanges() allow 0-valued decl and call lines (authored by dstenb). · Explain WhyMar 6 2023, 5:37 AM
This revision was automatically updated to reflect the committed changes.
dstenb added a commit: rG98c3dc3fa748: [lldb] Make GetDIENamesAndRanges() allow 0-valued decl and call lines.
dstenb mentioned this in rG12a7aea6b022: [DebugInfo] Merge partially matching chains of inlined locations.

Revision Contents

PathSize
lldb/
source/
Plugins/
SymbolFile/
DWARF/
19 lines
12 lines
5 lines
6 lines
19 lines
26 lines
test/
Shell/
SymbolFile/
DWARF/
Inputs/
699 lines
34 lines

Diff 502604

lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp

Show First 20 Lines • Show All 2,388 Lines • ▼ Show 20 Lines
Function * Function *
DWARFASTParserClang::ParseFunctionFromDWARF(CompileUnit &comp_unit, DWARFASTParserClang::ParseFunctionFromDWARF(CompileUnit &comp_unit,
const DWARFDIE &die, const DWARFDIE &die,
const AddressRange &func_range) { const AddressRange &func_range) {
assert(func_range.GetBaseAddress().IsValid()); assert(func_range.GetBaseAddress().IsValid());
DWARFRangeList func_ranges; DWARFRangeList func_ranges;
const char *name = nullptr; const char *name = nullptr;
const char *mangled = nullptr; const char *mangled = nullptr;
int decl_file = 0; std::optional<int> decl_file;
int decl_line = 0; std::optional<int> decl_line;
int decl_column = 0; std::optional<int> decl_column;
int call_file = 0; std::optional<int> call_file;
int call_line = 0; std::optional<int> call_line;
int call_column = 0; std::optional<int> call_column;
DWARFExpressionList frame_base; DWARFExpressionList frame_base;
const dw_tag_t tag = die.Tag(); const dw_tag_t tag = die.Tag();
if (tag != DW_TAG_subprogram) if (tag != DW_TAG_subprogram)
return nullptr; return nullptr;
if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line, if (die.GetDIENamesAndRanges(name, mangled, func_ranges, decl_file, decl_line,
Show All 13 Lines else if ((die.GetParent().Tag() == DW_TAG_compile_unit ||
// demangled name using the decl context. We skip if the function is // demangled name using the decl context. We skip if the function is
// "main" as its name is never mangled. // "main" as its name is never mangled.
func_name.SetValue(ConstructDemangledNameFromDWARF(die), false); func_name.SetValue(ConstructDemangledNameFromDWARF(die), false);
} else } else
func_name.SetValue(ConstString(name), false); func_name.SetValue(ConstString(name), false);
FunctionSP func_sp; FunctionSP func_sp;
std::unique_ptr<Declaration> decl_up; std::unique_ptr<Declaration> decl_up;
if (decl_file != 0 || decl_line != 0 || decl_column != 0) if (decl_file || decl_line || decl_column)
decl_up = std::make_unique<Declaration>(die.GetCU()->GetFile(decl_file), decl_up = std::make_unique<Declaration>(
decl_line, decl_column); die.GetCU()->GetFile(decl_file ? *decl_file : 0),
decl_line ? *decl_line : 0, decl_column ? *decl_column : 0);
SymbolFileDWARF *dwarf = die.GetDWARF(); SymbolFileDWARF *dwarf = die.GetDWARF();
// Supply the type _only_ if it has already been parsed // Supply the type _only_ if it has already been parsed
Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE()); Type *func_type = dwarf->GetDIEToType().lookup(die.GetDIE());
assert(func_type == nullptr || func_type != DIE_IS_BEING_PARSED); assert(func_type == nullptr || func_type != DIE_IS_BEING_PARSED);
const user_id_t func_user_id = die.GetID(); const user_id_t func_user_id = die.GetID();
▲ Show 20 Lines • Show All 1,253 Lines • Show Last 20 Lines

lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.h

Show First 20 Lines • Show All 77 Lines • ▼ Show 20 Linespublic:
// Getting attribute values from the DIE. // Getting attribute values from the DIE.
// //
// GetAttributeValueAsXXX() functions should only be used if you are // GetAttributeValueAsXXX() functions should only be used if you are
// looking for one or two attributes on a DIE. If you are trying to // looking for one or two attributes on a DIE. If you are trying to
// parse all attributes, use GetAttributes (...) instead // parse all attributes, use GetAttributes (...) instead
DWARFDIE DWARFDIE
GetAttributeValueAsReferenceDIE(const dw_attr_t attr) const; GetAttributeValueAsReferenceDIE(const dw_attr_t attr) const;
bool bool GetDIENamesAndRanges(
GetDIENamesAndRanges(const char *&name, const char *&mangled, const char *&name, const char *&mangled, DWARFRangeList &ranges,
DWARFRangeList &ranges, int &decl_file, int &decl_line, std::optional<int> &decl_file, std::optional<int> &decl_line,
int &decl_column, int &call_file, int &call_line, std::optional<int> &decl_column, std::optional<int> &call_file,
int &call_column, std::optional<int> &call_line, std::optional<int> &call_column,
lldb_private::DWARFExpressionList *frame_base) const; lldb_private::DWARFExpressionList *frame_base) const;
/// The range of all the children of this DIE. /// The range of all the children of this DIE.
llvm::iterator_range<child_iterator> children() const; llvm::iterator_range<child_iterator> children() const;
}; };
class DWARFDIE::child_iterator class DWARFDIE::child_iterator
: public llvm::iterator_facade_base<DWARFDIE::child_iterator, : public llvm::iterator_facade_base<DWARFDIE::child_iterator,
std::forward_iterator_tag, DWARFDIE> { std::forward_iterator_tag, DWARFDIE> {
Show All 31 Lines

lldb/source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp

Show First 20 Lines • Show All 433 Lines • ▼ Show 20 Linesbool DWARFDIE::IsMethod() const {
for (DWARFDIE d : elaborating_dies(*this)) for (DWARFDIE d : elaborating_dies(*this))
if (d.GetParent().IsStructUnionOrClass()) if (d.GetParent().IsStructUnionOrClass())
return true; return true;
return false; return false;
} }
bool DWARFDIE::GetDIENamesAndRanges( bool DWARFDIE::GetDIENamesAndRanges(
const char *&name, const char *&mangled, DWARFRangeList &ranges, const char *&name, const char *&mangled, DWARFRangeList &ranges,
int &decl_file, int &decl_line, int &decl_column, int &call_file, std::optional<int> &decl_file, std::optional<int> &decl_line,
int &call_line, int &call_column, std::optional<int> &decl_column, std::optional<int> &call_file,
std::optional<int> &call_line, std::optional<int> &call_column,
lldb_private::DWARFExpressionList *frame_base) const { lldb_private::DWARFExpressionList *frame_base) const {
if (IsValid()) { if (IsValid()) {
return m_die->GetDIENamesAndRanges( return m_die->GetDIENamesAndRanges(
GetCU(), name, mangled, ranges, decl_file, decl_line, decl_column, GetCU(), name, mangled, ranges, decl_file, decl_line, decl_column,
call_file, call_line, call_column, frame_base); call_file, call_line, call_column, frame_base);
} else } else
return false; return false;
} }
llvm::iterator_range<DWARFDIE::child_iterator> DWARFDIE::children() const { llvm::iterator_range<DWARFDIE::child_iterator> DWARFDIE::children() const {
return llvm::make_range(child_iterator(*this), child_iterator()); return llvm::make_range(child_iterator(*this), child_iterator());
} }

lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.h

Show First 20 Lines • Show All 97 Lines • ▼ Show 20 Linespublic:
const char *GetMangledName(const DWARFUnit *cu, const char *GetMangledName(const DWARFUnit *cu,
bool substitute_name_allowed = true) const; bool substitute_name_allowed = true) const;
const char *GetPubname(const DWARFUnit *cu) const; const char *GetPubname(const DWARFUnit *cu) const;
bool GetDIENamesAndRanges( bool GetDIENamesAndRanges(
DWARFUnit *cu, const char *&name, const char *&mangled, DWARFUnit *cu, const char *&name, const char *&mangled,
DWARFRangeList &rangeList, int &decl_file, int &decl_line, DWARFRangeList &rangeList, std::optional<int> &decl_file,
int &decl_column, int &call_file, int &call_line, int &call_column, std::optional<int> &decl_line, std::optional<int> &decl_column,
std::optional<int> &call_file, std::optional<int> &call_line,
std::optional<int> &call_column,
lldb_private::DWARFExpressionList *frame_base = nullptr) const; lldb_private::DWARFExpressionList *frame_base = nullptr) const;
const DWARFAbbreviationDeclaration * const DWARFAbbreviationDeclaration *
GetAbbreviationDeclarationPtr(const DWARFUnit *cu) const; GetAbbreviationDeclarationPtr(const DWARFUnit *cu) const;
lldb::offset_t GetFirstAttributeOffset() const; lldb::offset_t GetFirstAttributeOffset() const;
dw_tag_t Tag() const { return m_tag; } dw_tag_t Tag() const { return m_tag; }
▲ Show 20 Lines • Show All 74 Lines • Show Last 20 Lines

lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp

Show First 20 Lines • Show All 228 Lines • ▼ Show 20 Lines
} }
// GetDIENamesAndRanges // GetDIENamesAndRanges
// //
// Gets the valid address ranges for a given DIE by looking for a // Gets the valid address ranges for a given DIE by looking for a
// DW_AT_low_pc/DW_AT_high_pc pair, DW_AT_entry_pc, or DW_AT_ranges attributes. // DW_AT_low_pc/DW_AT_high_pc pair, DW_AT_entry_pc, or DW_AT_ranges attributes.
bool DWARFDebugInfoEntry::GetDIENamesAndRanges( bool DWARFDebugInfoEntry::GetDIENamesAndRanges(
DWARFUnit *cu, const char *&name, const char *&mangled, DWARFUnit *cu, const char *&name, const char *&mangled,
DWARFRangeList &ranges, int &decl_file, int &decl_line, int &decl_column, DWARFRangeList &ranges, std::optional<int> &decl_file,
int &call_file, int &call_line, int &call_column, std::optional<int> &decl_line, std::optional<int> &decl_column,
DWARFExpressionList *frame_base) const { std::optional<int> &call_file, std::optional<int> &call_line,
std::optional<int> &call_column, DWARFExpressionList *frame_base) const {
dw_addr_t lo_pc = LLDB_INVALID_ADDRESS; dw_addr_t lo_pc = LLDB_INVALID_ADDRESS;
dw_addr_t hi_pc = LLDB_INVALID_ADDRESS; dw_addr_t hi_pc = LLDB_INVALID_ADDRESS;
std::vector<DWARFDIE> dies; std::vector<DWARFDIE> dies;
bool set_frame_base_loclist_addr = false; bool set_frame_base_loclist_addr = false;
const auto *abbrevDecl = GetAbbreviationDeclarationPtr(cu); const auto *abbrevDecl = GetAbbreviationDeclarationPtr(cu);
SymbolFileDWARF &dwarf = cu->GetSymbolFileDWARF(); SymbolFileDWARF &dwarf = cu->GetSymbolFileDWARF();
▲ Show 20 Lines • Show All 62 Lines • ▼ Show 20 Lines for (uint32_t i = 0; i < numAttributes; ++i) {
dies.push_back(form_value.Reference()); dies.push_back(form_value.Reference());
break; break;
case DW_AT_specification: case DW_AT_specification:
dies.push_back(form_value.Reference()); dies.push_back(form_value.Reference());
break; break;
case DW_AT_decl_file: case DW_AT_decl_file:
if (decl_file == 0) if (!decl_file)
decl_file = form_value.Unsigned(); decl_file = form_value.Unsigned();
break; break;
case DW_AT_decl_line: case DW_AT_decl_line:
if (decl_line == 0) if (!decl_line)
decl_line = form_value.Unsigned(); decl_line = form_value.Unsigned();
break; break;
case DW_AT_decl_column: case DW_AT_decl_column:
if (decl_column == 0) if (!decl_column)
decl_column = form_value.Unsigned(); decl_column = form_value.Unsigned();
break; break;
case DW_AT_call_file: case DW_AT_call_file:
if (call_file == 0) if (!call_file)
call_file = form_value.Unsigned(); call_file = form_value.Unsigned();
break; break;
case DW_AT_call_line: case DW_AT_call_line:
if (call_line == 0) if (!call_line)
call_line = form_value.Unsigned(); call_line = form_value.Unsigned();
break; break;
case DW_AT_call_column: case DW_AT_call_column:
if (call_column == 0) if (!call_column)
call_column = form_value.Unsigned(); call_column = form_value.Unsigned();
break; break;
case DW_AT_frame_base: case DW_AT_frame_base:
if (frame_base) { if (frame_base) {
if (form_value.BlockData()) { if (form_value.BlockData()) {
uint32_t block_offset = uint32_t block_offset =
form_value.BlockData() - data.GetDataStart(); form_value.BlockData() - data.GetDataStart();
▲ Show 20 Lines • Show All 501 Lines • Show Last 20 Lines

lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp

Show First 20 Lines • Show All 1,278 Lines • ▼ Show 20 Lines case DW_TAG_lexical_block: {
BlockSP block_sp(new Block(die.GetID())); BlockSP block_sp(new Block(die.GetID()));
parent_block->AddChild(block_sp); parent_block->AddChild(block_sp);
block = block_sp.get(); block = block_sp.get();
} }
DWARFRangeList ranges; DWARFRangeList ranges;
const char *name = nullptr; const char *name = nullptr;
const char *mangled_name = nullptr; const char *mangled_name = nullptr;
int decl_file = 0; std::optional<int> decl_file;
int decl_line = 0; std::optional<int> decl_line;
int decl_column = 0; std::optional<int> decl_column;
int call_file = 0; std::optional<int> call_file;
int call_line = 0; std::optional<int> call_line;
int call_column = 0; std::optional<int> call_column;
if (die.GetDIENamesAndRanges(name, mangled_name, ranges, decl_file, if (die.GetDIENamesAndRanges(name, mangled_name, ranges, decl_file,
decl_line, decl_column, call_file, call_line, decl_line, decl_column, call_file, call_line,
call_column, nullptr)) { call_column, nullptr)) {
if (tag == DW_TAG_subprogram) { if (tag == DW_TAG_subprogram) {
assert(subprogram_low_pc == LLDB_INVALID_ADDRESS); assert(subprogram_low_pc == LLDB_INVALID_ADDRESS);
subprogram_low_pc = ranges.GetMinRangeBase(0); subprogram_low_pc = ranges.GetMinRangeBase(0);
} else if (tag == DW_TAG_inlined_subroutine) { } else if (tag == DW_TAG_inlined_subroutine) {
// We get called here for inlined subroutines in two ways. The first // We get called here for inlined subroutines in two ways. The first
Show All 26 Lines case DW_TAG_lexical_block: {
subprogram_low_pc); subprogram_low_pc);
} }
} }
block->FinalizeRanges(); block->FinalizeRanges();
if (tag != DW_TAG_subprogram && if (tag != DW_TAG_subprogram &&
(name != nullptr || mangled_name != nullptr)) { (name != nullptr || mangled_name != nullptr)) {
std::unique_ptr<Declaration> decl_up; std::unique_ptr<Declaration> decl_up;
if (decl_file != 0 || decl_line != 0 || decl_column != 0) if (decl_file || decl_line || decl_column)
decl_up = std::make_unique<Declaration>( decl_up = std::make_unique<Declaration>(
comp_unit.GetSupportFiles().GetFileSpecAtIndex(decl_file), comp_unit.GetSupportFiles().GetFileSpecAtIndex(
decl_line, decl_column); decl_file ? *decl_file : 0),
decl_line ? *decl_line : 0, decl_column ? *decl_column : 0);
std::unique_ptr<Declaration> call_up; std::unique_ptr<Declaration> call_up;
if (call_file != 0 || call_line != 0 || call_column != 0) if (call_file || call_line || call_column)
call_up = std::make_unique<Declaration>( call_up = std::make_unique<Declaration>(
comp_unit.GetSupportFiles().GetFileSpecAtIndex(call_file), comp_unit.GetSupportFiles().GetFileSpecAtIndex(
call_line, call_column); call_file ? *call_file : 0),
call_line ? *call_line : 0, call_column ? *call_column : 0);
block->SetInlinedFunctionInfo(name, mangled_name, decl_up.get(), block->SetInlinedFunctionInfo(name, mangled_name, decl_up.get(),
call_up.get()); call_up.get());
} }
++blocks_added; ++blocks_added;
if (die.HasChildren()) { if (die.HasChildren()) {
▲ Show 20 Lines • Show All 2,903 Lines • Show Last 20 Lines

lldb/test/Shell/SymbolFile/DWARF/Inputs/inlined-file0-line0-col0.yaml

  • This file was added.
--- !mach-o
FileHeader:
magic: 0xFEEDFACF
cputype: 0x1000007
cpusubtype: 0x3
filetype: 0x1
ncmds: 3
sizeofcmds: 736
flags: 0x2000
reserved: 0x0
LoadCommands:
- cmd: LC_SEGMENT_64
cmdsize: 632
segname: ''
vmaddr: 0
vmsize: 814
fileoff: 768
filesize: 814
maxprot: 7
initprot: 7
nsects: 7
flags: 0
Sections:
- sectname: __text
segname: __TEXT
addr: 0x0
size: 31
offset: 0x300
align: 4
reloff: 0x630
nreloc: 3
flags: 0x80000400
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
content: 554889E5833DFFFFFFFF067D0D833DFFFFFFFF067D0431C05DC3E800000000
relocations:
- address: 0x1B
symbolnum: 3
pcrel: true
length: 2
extern: true
type: 2
scattered: false
value: 0
- address: 0xF
symbolnum: 1
pcrel: true
length: 2
extern: true
type: 6
scattered: false
value: 0
- address: 0x6
symbolnum: 0
pcrel: true
length: 2
extern: true
type: 6
scattered: false
value: 0
- sectname: __data
segname: __DATA
addr: 0x20
size: 8
offset: 0x320
align: 2
reloff: 0x0
nreloc: 0
flags: 0x0
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
content: '0400000006000000'
- sectname: __debug_abbrev
segname: __DWARF
addr: 0x28
size: 182
offset: 0x328
align: 0
reloff: 0x0
nreloc: 0
flags: 0x2000000
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
- sectname: __debug_info
segname: __DWARF
addr: 0xDE
size: 300
offset: 0x3DE
align: 0
reloff: 0x648
nreloc: 11
flags: 0x2000000
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
relocations:
- address: 0x11B
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0x106
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0xF3
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0xDE
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0xCA
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0xB5
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0xA1
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0x84
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0x53
symbolnum: 2
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0x37
symbolnum: 2
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- address: 0x1E
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- sectname: __debug_str
segname: __DWARF
addr: 0x20A
size: 106
offset: 0x50A
align: 0
reloff: 0x0
nreloc: 0
flags: 0x2000000
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
- sectname: __eh_frame
segname: __TEXT
addr: 0x278
size: 72
offset: 0x578
align: 3
reloff: 0x0
nreloc: 0
flags: 0x6800000B
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
content: 1400000000000000017A520001781001100C0708900100002C0000001C00000068FDFFFFFFFFFFFF1F0000000000000000410E108602430D06550C0708410C061000000000000000
- sectname: __debug_line
segname: __DWARF
addr: 0x2C0
size: 110
offset: 0x5C0
align: 0
reloff: 0x6A0
nreloc: 1
flags: 0x2000000
reserved1: 0x0
reserved2: 0x0
reserved3: 0x0
relocations:
- address: 0x3F
symbolnum: 1
pcrel: false
length: 3
extern: false
type: 0
scattered: false
value: 0
- cmd: LC_SYMTAB
cmdsize: 24
symoff: 1704
nsyms: 4
stroff: 1768
strsize: 24
- cmd: LC_DYSYMTAB
cmdsize: 80
ilocalsym: 0
nlocalsym: 0
iextdefsym: 0
nextdefsym: 3
iundefsym: 3
nundefsym: 1
tocoff: 0
ntoc: 0
modtaboff: 0
nmodtab: 0
extrefsymoff: 0
nextrefsyms: 0
indirectsymoff: 0
nindirectsyms: 0
extreloff: 0
nextrel: 0
locreloff: 0
nlocrel: 0
LinkEditData:
NameList:
- n_strx: 18
n_type: 0xF
n_sect: 2
n_desc: 0
n_value: 32
- n_strx: 14
n_type: 0xF
n_sect: 2
n_desc: 0
n_value: 36
- n_strx: 8
n_type: 0xF
n_sect: 1
n_desc: 0
n_value: 0
- n_strx: 1
n_type: 0x1
n_sect: 0
n_desc: 0
n_value: 0
StringTable:
- ''
- _abort
- _main
- _g2
- _g1
- ''
- ''
DWARF:
debug_str:
- clang version 16.0.0.prerel
- inlined-file0-line0-col0.c
- '/tmp/tmp.o5FdSk4Xkz'
- g1
- int
- g2
- bar
- q
- foo
- abort
- main
debug_abbrev:
- ID: 0
Table:
- Code: 0x1
Tag: DW_TAG_compile_unit
Children: DW_CHILDREN_yes
Attributes:
- Attribute: DW_AT_producer
Form: DW_FORM_strp
- Attribute: DW_AT_language
Form: DW_FORM_data2
- Attribute: DW_AT_name
Form: DW_FORM_strp
- Attribute: DW_AT_stmt_list
Form: DW_FORM_sec_offset
- Attribute: DW_AT_comp_dir
Form: DW_FORM_strp
- Attribute: DW_AT_low_pc
Form: DW_FORM_addr
- Attribute: DW_AT_high_pc
Form: DW_FORM_data4
- Code: 0x2
Tag: DW_TAG_variable
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_name
Form: DW_FORM_strp
- Attribute: DW_AT_type
Form: DW_FORM_ref4
- Attribute: DW_AT_external
Form: DW_FORM_flag_present
- Attribute: DW_AT_decl_file
Form: DW_FORM_data1
- Attribute: DW_AT_decl_line
Form: DW_FORM_data1
- Attribute: DW_AT_location
Form: DW_FORM_exprloc
- Code: 0x3
Tag: DW_TAG_base_type
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_name
Form: DW_FORM_strp
- Attribute: DW_AT_encoding
Form: DW_FORM_data1
- Attribute: DW_AT_byte_size
Form: DW_FORM_data1
- Code: 0x4
Tag: DW_TAG_subprogram
Children: DW_CHILDREN_yes
Attributes:
- Attribute: DW_AT_name
Form: DW_FORM_strp
- Attribute: DW_AT_decl_file
Form: DW_FORM_data1
- Attribute: DW_AT_decl_line
Form: DW_FORM_data1
- Attribute: DW_AT_prototyped
Form: DW_FORM_flag_present
- Attribute: DW_AT_external
Form: DW_FORM_flag_present
- Attribute: DW_AT_inline
Form: DW_FORM_data1
- Code: 0x5
Tag: DW_TAG_formal_parameter
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_name
Form: DW_FORM_strp
- Attribute: DW_AT_decl_file
Form: DW_FORM_data1
- Attribute: DW_AT_decl_line
Form: DW_FORM_data1
- Attribute: DW_AT_type
Form: DW_FORM_ref4
- Code: 0x6
Tag: DW_TAG_subprogram
Children: DW_CHILDREN_yes
Attributes:
- Attribute: DW_AT_low_pc
Form: DW_FORM_addr
- Attribute: DW_AT_high_pc
Form: DW_FORM_data4
- Attribute: DW_AT_frame_base
Form: DW_FORM_exprloc
- Attribute: DW_AT_GNU_all_call_sites
Form: DW_FORM_flag_present
- Attribute: DW_AT_name
Form: DW_FORM_strp
- Attribute: DW_AT_decl_file
Form: DW_FORM_data1
- Attribute: DW_AT_decl_line
Form: DW_FORM_data1
- Attribute: DW_AT_type
Form: DW_FORM_ref4
- Attribute: DW_AT_external
Form: DW_FORM_flag_present
- Code: 0x7
Tag: DW_TAG_inlined_subroutine
Children: DW_CHILDREN_yes
Attributes:
- Attribute: DW_AT_abstract_origin
Form: DW_FORM_ref4
- Attribute: DW_AT_low_pc
Form: DW_FORM_addr
- Attribute: DW_AT_high_pc
Form: DW_FORM_data4
- Attribute: DW_AT_call_file
Form: DW_FORM_data1
- Attribute: DW_AT_call_line
Form: DW_FORM_data1
- Attribute: DW_AT_call_column
Form: DW_FORM_data1
- Code: 0x8
Tag: DW_TAG_inlined_subroutine
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_abstract_origin
Form: DW_FORM_ref4
- Attribute: DW_AT_low_pc
Form: DW_FORM_addr
- Attribute: DW_AT_high_pc
Form: DW_FORM_data4
- Attribute: DW_AT_call_file
Form: DW_FORM_data1
- Attribute: DW_AT_call_line
Form: DW_FORM_data1
- Attribute: DW_AT_call_column
Form: DW_FORM_data1
- Code: 0x9
Tag: DW_TAG_inlined_subroutine
Children: DW_CHILDREN_yes
Attributes:
- Attribute: DW_AT_abstract_origin
Form: DW_FORM_ref4
- Attribute: DW_AT_low_pc
Form: DW_FORM_addr
- Attribute: DW_AT_high_pc
Form: DW_FORM_data4
- Attribute: DW_AT_call_file
Form: DW_FORM_data1
- Attribute: DW_AT_call_line
Form: DW_FORM_data1
- Code: 0xA
Tag: DW_TAG_GNU_call_site
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_abstract_origin
Form: DW_FORM_ref4
- Attribute: DW_AT_low_pc
Form: DW_FORM_addr
- Code: 0xB
Tag: DW_TAG_subprogram
Children: DW_CHILDREN_no
Attributes:
- Attribute: DW_AT_name
Form: DW_FORM_strp
- Attribute: DW_AT_decl_file
Form: DW_FORM_data1
- Attribute: DW_AT_decl_line
Form: DW_FORM_data1
- Attribute: DW_AT_prototyped
Form: DW_FORM_flag_present
- Attribute: DW_AT_declaration
Form: DW_FORM_flag_present
- Attribute: DW_AT_external
Form: DW_FORM_flag_present
- Attribute: DW_AT_noreturn
Form: DW_FORM_flag_present
debug_info:
- Length: 0x128
Version: 4
AbbrevTableID: 0
AbbrOffset: 0x0
AddrSize: 8
Entries:
- AbbrCode: 0x1
Values:
- Value: 0x0
- Value: 0x1D
- Value: 0x1C
- Value: 0x0
- Value: 0x37
- Value: 0x0
- Value: 0x1F
- AbbrCode: 0x2
Values:
- Value: 0x4B
- Value: 0x3F
- Value: 0x1
- Value: 0x1
- Value: 0x2
- Value: 0x9
BlockData: [ 0x3, 0x20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0 ]
- AbbrCode: 0x3
Values:
- Value: 0x4E
- Value: 0x5
- Value: 0x4
- AbbrCode: 0x2
Values:
- Value: 0x52
- Value: 0x3F
- Value: 0x1
- Value: 0x1
- Value: 0x2
- Value: 0x9
BlockData: [ 0x3, 0x24, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0 ]
- AbbrCode: 0x4
Values:
- Value: 0x55
- Value: 0x1
- Value: 0x4
- Value: 0x1
- Value: 0x1
- Value: 0x1
- AbbrCode: 0x5
Values:
- Value: 0x59
- Value: 0x1
- Value: 0x4
- Value: 0x3F
- AbbrCode: 0x0
- AbbrCode: 0x4
Values:
- Value: 0x5B
- Value: 0x1
- Value: 0x9
- Value: 0x1
- Value: 0x1
- Value: 0x1
- AbbrCode: 0x5
Values:
- Value: 0x59
- Value: 0x1
- Value: 0x9
- Value: 0x3F
- AbbrCode: 0x0
- AbbrCode: 0x6
Values:
- Value: 0x0
- Value: 0x1F
- Value: 0x1
BlockData: [ 0x56 ]
- Value: 0x1
- Value: 0x65
- Value: 0x1
- Value: 0xD
- Value: 0x3F
- Value: 0x1
- AbbrCode: 0x7
Values:
- Value: 0x6F
- Value: 0x4
- Value: 0x9
- Value: 0x1
- Value: 0xE
- Value: 0x3
- AbbrCode: 0x8
Values:
- Value: 0x5B
- Value: 0x4
- Value: 0x9
- Value: 0x1
- Value: 0xA
- Value: 0x3
- AbbrCode: 0x0
- AbbrCode: 0x7
Values:
- Value: 0x6F
- Value: 0xD
- Value: 0x9
- Value: 0x1
- Value: 0xF
- Value: 0x3
- AbbrCode: 0x8
Values:
- Value: 0x5B
- Value: 0xD
- Value: 0x9
- Value: 0x1
- Value: 0xA
- Value: 0x3
- AbbrCode: 0x0
- AbbrCode: 0x9
Values:
- Value: 0x6F
- Value: 0x1A
- Value: 0x5
- Value: 0x1
- Value: 0x0
- AbbrCode: 0x8
Values:
- Value: 0x5B
- Value: 0x1A
- Value: 0x5
- Value: 0x1
- Value: 0xA
- Value: 0x3
- AbbrCode: 0x0
- AbbrCode: 0xA
Values:
- Value: 0x124
- Value: 0x1F
- AbbrCode: 0x0
- AbbrCode: 0xB
Values:
- Value: 0x5F
- Value: 0x1
- Value: 0x1
- Value: 0x1
- Value: 0x1
- Value: 0x1
- Value: 0x1
- AbbrCode: 0x0
debug_line:
- Length: 106
Version: 4
PrologueLength: 50
MinInstLength: 1
MaxOpsPerInst: 1
DefaultIsStmt: 1
LineBase: 251
LineRange: 14
OpcodeBase: 13
StandardOpcodeLengths: [ 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1 ]
Files:
- Name: inlined-file0-line0-col0.c
DirIdx: 0
ModTime: 0
Length: 0
Opcodes:
- Opcode: DW_LNS_extended_op
ExtLen: 9
SubOpcode: DW_LNE_set_address
Data: 0
- Opcode: DW_LNS_advance_line
SData: 12
Data: 0
- Opcode: DW_LNS_copy
Data: 0
- Opcode: DW_LNS_set_column
Data: 9
- Opcode: DW_LNS_set_prologue_end
Data: 0
- Opcode: DW_LNS_advance_line
SData: -8
Data: 0
- Opcode: 0x4A
Data: 0
- Opcode: DW_LNS_set_column
Data: 7
- Opcode: DW_LNS_negate_stmt
Data: 0
- Opcode: 0x74
Data: 0
- Opcode: DW_LNS_set_column
Data: 9
- Opcode: 0x2E
Data: 0
- Opcode: DW_LNS_set_column
Data: 7
- Opcode: 0x74
Data: 0
- Opcode: DW_LNS_set_column
Data: 3
- Opcode: DW_LNS_negate_stmt
Data: 0
- Opcode: DW_LNS_advance_line
SData: 11
Data: 0
- Opcode: 0x2E
Data: 0
- Opcode: DW_LNS_negate_stmt
Data: 0
- Opcode: DW_LNS_set_epilogue_begin
Data: 0
- Opcode: 0x2E
Data: 0
- Opcode: DW_LNS_set_column
Data: 5
- Opcode: DW_LNS_negate_stmt
Data: 0
- Opcode: DW_LNS_advance_line
SData: -10
Data: 0
- Opcode: 0x2E
Data: 0
- Opcode: DW_LNS_advance_pc
Data: 5
- Opcode: DW_LNS_extended_op
ExtLen: 1
SubOpcode: DW_LNE_end_sequence
Data: 0
...

lldb/test/Shell/SymbolFile/DWARF/inlined-file0-line0-col0.test

  • This file was added.
# RUN: yaml2obj %S/Inputs/inlined-file0-line0-col0.yaml -o %t
# RUN: %lldb %t -s %s -o exit | FileCheck %s
# 1 void abort(void);
# 2 int g1 = 4, g2 = 6;
# 3
# 4 inline __attribute__((always_inline)) void bar(int q) {
# 5 if (q > 5)
# 6 abort();
# 7 }
# 8
# 9 inline __attribute__((always_inline)) void foo(int q) {
# 10 bar(q);
# 11 }
# 12
# 13 int main() {
# 14 foo(g1);
# 15 foo(g2);
# 16 return 0;
# 17 }
# The input object file contains a single abort invocation for the two inlined
# instances of foo() in main() at line 0. As the file, line and column numbers
# are all 0, file and line number information would be missing for foo and main
# in the lookup information.
#
# A line number 0 is not printed for main in this case, but the same holds
# for a non-inlined location with line number 0.
# CHECK: Summary: inlined-file0-line0-col0.test.tmp`main + 30 [inlined] bar + 4 at inlined-file0-line0-col0.c:6:5
# CHECK-NEXT: inlined-file0-line0-col0.test.tmp`main + 26 [inlined] foo at inlined-file0-line0-col0.c:10:3
# CHECK-NEXT: inlined-file0-line0-col0.test.tmp`main + 26 at inlined-file0-line0-col0.c
image lookup -a 0x1e