Skip to content

[lldb] Mark scripted frames as synthetic instead of artificial #153117

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Sep 3, 2025
+156 −109
Merged

[lldb] Mark scripted frames as synthetic instead of artificial #153117

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions lldb/include/lldb/API/SBFrame.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,8 @@ class LLDB_API SBFrame {

bool IsArtificial() const;

bool IsSynthetic() const;

/// Return whether a frame recognizer decided this frame should not
/// be displayes in backtraces etc.
bool IsHidden() const;
Expand Down
1 change: 1 addition & 0 deletions lldb/include/lldb/Core/FormatEntity.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -80,6 +80,7 @@ struct Entry {
FrameRegisterFlags,
FrameRegisterByName,
FrameIsArtificial,
FrameKind,
ScriptFrame,
FunctionID,
FunctionDidChange,
Expand Down
17 changes: 12 additions & 5 deletions lldb/include/lldb/Target/StackFrame.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -60,10 +60,9 @@ class StackFrame : public ExecutionContextScope,
/// local variables.
History,

/// An artificial stack frame (e.g. a synthesized result of inferring
/// missing tail call frames from a backtrace) with limited support for
/// local variables.
Artificial
/// An synthetic stack frame (e.g. a synthesized result from script
/// resource) possibly without support for local variables or register.
Synthetic
};

/// Construct a StackFrame object without supplying a RegisterContextSP.
Expand Down Expand Up @@ -109,7 +108,8 @@ class StackFrame : public ExecutionContextScope,
StackFrame(const lldb::ThreadSP &thread_sp, lldb::user_id_t frame_idx,
lldb::user_id_t concrete_frame_idx, lldb::addr_t cfa,
bool cfa_is_valid, lldb::addr_t pc, Kind frame_kind,
bool behaves_like_zeroth_frame, const SymbolContext *sc_ptr);
bool artificial, bool behaves_like_zeroth_frame,
const SymbolContext *sc_ptr);

StackFrame(const lldb::ThreadSP &thread_sp, lldb::user_id_t frame_idx,
lldb::user_id_t concrete_frame_idx,
Expand Down Expand Up @@ -400,6 +400,9 @@ class StackFrame : public ExecutionContextScope,
/// true if this is an inlined frame.
bool IsInlined();

/// Query whether this frame is synthetic.
bool IsSynthetic() const;

/// Query whether this frame is part of a historical backtrace.
bool IsHistorical() const;

Expand Down Expand Up @@ -571,6 +574,10 @@ class StackFrame : public ExecutionContextScope,
/// Does this frame have a CFA? Different from CFA == LLDB_INVALID_ADDRESS.
bool m_cfa_is_valid;
Kind m_stack_frame_kind;
/// Is this an artificial stack frame (e.g. a synthesized result of inferring
/// missing tail call frames from a backtrace) with limited support for
/// local variables. Orthogonal to `StackFrame::Kind`.
bool m_artificial;
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I guess the alternative to this would be to make m_stack_frame_kind an enum mask? So we could have frames that are Synthetic | Artificial. Don't have a strong opinion on that. I'll let the others chime in

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I've discussed this option with @jimingham offline but according to him, artificial like inlined is orthogonal to the stack frame kind. For instance, a frame with StackFrame::Kind::History or StackFrame::Kind::Synthetic kind can be artificial or inlined.

Copy link
Collaborator

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Note, we also use "artificial" to mean the frame is a language-generated frame that most users probably don't want to see. There's been a suggestion that lldb should auto-hide and auto-step through this sort of "artificial" frame. But this is very much NOT how we want to treat the "missing tail call frames". So they need a different flag to indicate what they are.
They really should be "historical" frames - like other historical frames they are just a PC & CFA, but their stack doesn't currently exist - it's been overwritten by the function it tail-called to.
Anyway, you should change the comment here to refer to the more common usage...

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

So may be we should make the distinction between tail call frames and artificial (compiler generated / runtime glue) frames, as a follow-up.

Copy link
Collaborator

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Sure.


/// Whether this frame behaves like the zeroth frame, in the sense
/// that its pc value might not immediately follow a call (and thus might
Expand Down
16 changes: 16 additions & 0 deletions lldb/source/API/SBFrame.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1118,6 +1118,22 @@ bool SBFrame::IsArtificial() const {
return false;
}

bool SBFrame::IsSynthetic() const {
LLDB_INSTRUMENT_VA(this);

llvm::Expected<StoppedExecutionContext> exe_ctx =
GetStoppedExecutionContext(m_opaque_sp);
if (!exe_ctx) {
LLDB_LOG_ERROR(GetLog(LLDBLog::API), exe_ctx.takeError(), "{0}");
return false;
}

if (StackFrame *frame = exe_ctx->GetFramePtr())
return frame->IsSynthetic();

return false;
}

bool SBFrame::IsHidden() const {
LLDB_INSTRUMENT_VA(this);

Expand Down
4 changes: 2 additions & 2 deletions lldb/source/Core/CoreProperties.td
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,7 @@ let Definition = "debugger" in {
Desc<"The default disassembly format string to use when disassembling instruction sequences.">;
def FrameFormat: Property<"frame-format", "FormatEntity">,
Global,
DefaultStringValue<"frame #${frame.index}: ${ansi.fg.cyan}${frame.pc}${ansi.normal}{ ${module.file.basename}{`${function.name-with-args}{${frame.no-debug}${function.pc-offset}}}}{ at ${ansi.fg.cyan}${line.file.basename}${ansi.normal}:${ansi.fg.yellow}${line.number}${ansi.normal}{:${ansi.fg.yellow}${line.column}${ansi.normal}}}{${function.is-optimized} [opt]}{${function.is-inlined} [inlined]}{${frame.is-artificial} [artificial]}\\\\n">,
DefaultStringValue<"frame #${frame.index}: ${ansi.fg.cyan}${frame.pc}${ansi.normal}{ ${module.file.basename}{`${function.name-with-args}{${frame.no-debug}${function.pc-offset}}}}{ at ${ansi.fg.cyan}${line.file.basename}${ansi.normal}:${ansi.fg.yellow}${line.number}${ansi.normal}{:${ansi.fg.yellow}${line.column}${ansi.normal}}}${frame.kind}{${function.is-optimized} [opt]}{${function.is-inlined} [inlined]}{${frame.is-artificial} [artificial]}\\\\n">,
Desc<"The default frame format string to use when displaying stack frame information for threads.">;
def NotiftVoid: Property<"notify-void", "Boolean">,
Global,
Expand Down Expand Up @@ -233,7 +233,7 @@ let Definition = "debugger" in {
Desc<"If true, LLDB will automatically escape non-printable and escape characters when formatting strings.">;
def FrameFormatUnique: Property<"frame-format-unique", "FormatEntity">,
Global,
DefaultStringValue<"frame #${frame.index}: ${ansi.fg.cyan}${frame.pc}${ansi.normal}{ ${module.file.basename}{`${function.name-without-args}{${frame.no-debug}${function.pc-offset}}}}{ at ${ansi.fg.cyan}${line.file.basename}${ansi.normal}:${ansi.fg.yellow}${line.number}${ansi.normal}{:${ansi.fg.yellow}${line.column}${ansi.normal}}}{${function.is-optimized} [opt]}{${function.is-inlined} [inlined]}{${frame.is-artificial} [artificial]}\\\\n">,
DefaultStringValue<"frame #${frame.index}: ${ansi.fg.cyan}${frame.pc}${ansi.normal}{ ${module.file.basename}{`${function.name-without-args}{${frame.no-debug}${function.pc-offset}}}}{ at ${ansi.fg.cyan}${line.file.basename}${ansi.normal}:${ansi.fg.yellow}${line.number}${ansi.normal}{:${ansi.fg.yellow}${line.column}${ansi.normal}}}${frame.kind}{${function.is-optimized} [opt]}{${function.is-inlined} [inlined]}{${frame.is-artificial} [artificial]}\\\\n">,
Desc<"The default frame format string to use when displaying stack frame information for threads from thread backtrace unique.">;
def ShowAutosuggestion: Property<"show-autosuggestion", "Boolean">,
Global,
Expand Down
14 changes: 14 additions & 0 deletions lldb/source/Core/FormatEntity.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -108,6 +108,7 @@ constexpr Definition g_frame_child_entries[] = {
Entry::DefinitionWithChildren("reg", EntryType::FrameRegisterByName,
g_string_entry),
Definition("is-artificial", EntryType::FrameIsArtificial),
Definition("kind", EntryType::FrameKind),
};

constexpr Definition g_function_child_entries[] = {
Expand Down Expand Up @@ -380,6 +381,7 @@ const char *FormatEntity::Entry::TypeToCString(Type t) {
ENUM_TO_CSTR(FrameRegisterFlags);
ENUM_TO_CSTR(FrameRegisterByName);
ENUM_TO_CSTR(FrameIsArtificial);
ENUM_TO_CSTR(FrameKind);
ENUM_TO_CSTR(ScriptFrame);
ENUM_TO_CSTR(FunctionID);
ENUM_TO_CSTR(FunctionDidChange);
Expand Down Expand Up @@ -1747,6 +1749,18 @@ bool FormatEntity::Format(const Entry &entry, Stream &s,
return false;
}

case Entry::Type::FrameKind: {
if (exe_ctx)
if (StackFrame *frame = exe_ctx->GetFramePtr()) {
if (frame->IsSynthetic())
s.PutCString(" [synthetic]");
else if (frame->IsHistorical())
s.PutCString(" [history]");
return true;
}
return false;
}

case Entry::Type::ScriptFrame:
if (exe_ctx) {
StackFrame *frame = exe_ctx->GetFramePtr();
Expand Down
4 changes: 3 additions & 1 deletion lldb/source/Plugins/Process/scripted/ScriptedThread.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -200,13 +200,15 @@ bool ScriptedThread::LoadArtificialStackFrames() {

lldb::addr_t cfa = LLDB_INVALID_ADDRESS;
bool cfa_is_valid = false;
const bool artificial = false;
const bool behaves_like_zeroth_frame = false;
SymbolContext sc;
symbol_addr.CalculateSymbolContext(&sc);

StackFrameSP synth_frame_sp = std::make_shared<StackFrame>(
this->shared_from_this(), idx, idx, cfa, cfa_is_valid, pc,
StackFrame::Kind::Artificial, behaves_like_zeroth_frame, &sc);
StackFrame::Kind::Synthetic, artificial, behaves_like_zeroth_frame,
&sc);

if (!frames->SetFrameAtIndex(static_cast<uint32_t>(idx), synth_frame_sp))
return ScriptedInterface::ErrorWithMessage<bool>(
Expand Down
14 changes: 8 additions & 6 deletions lldb/source/Target/StackFrame.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -57,14 +57,14 @@ using namespace lldb_private;
StackFrame::StackFrame(const ThreadSP &thread_sp, user_id_t frame_idx,
user_id_t unwind_frame_index, addr_t cfa,
bool cfa_is_valid, addr_t pc, StackFrame::Kind kind,
bool behaves_like_zeroth_frame,
bool artificial, bool behaves_like_zeroth_frame,
const SymbolContext *sc_ptr)
: m_thread_wp(thread_sp), m_frame_index(frame_idx),
m_concrete_frame_index(unwind_frame_index), m_reg_context_sp(),
m_id(pc, cfa, nullptr, thread_sp->GetProcess().get()),
m_frame_code_addr(pc), m_sc(), m_flags(), m_frame_base(),
m_frame_base_error(), m_cfa_is_valid(cfa_is_valid),
m_stack_frame_kind(kind),
m_stack_frame_kind(kind), m_artificial(artificial),
m_behaves_like_zeroth_frame(behaves_like_zeroth_frame),
m_variable_list_sp(), m_variable_list_value_objects(),
m_recognized_frame_sp(), m_disassembly(), m_mutex() {
Expand Down Expand Up @@ -92,7 +92,7 @@ StackFrame::StackFrame(const ThreadSP &thread_sp, user_id_t frame_idx,
m_id(pc, cfa, nullptr, thread_sp->GetProcess().get()),
m_frame_code_addr(pc), m_sc(), m_flags(), m_frame_base(),
m_frame_base_error(), m_cfa_is_valid(true),
m_stack_frame_kind(StackFrame::Kind::Regular),
m_stack_frame_kind(StackFrame::Kind::Regular), m_artificial(false),
m_behaves_like_zeroth_frame(behaves_like_zeroth_frame),
m_variable_list_sp(), m_variable_list_value_objects(),
m_recognized_frame_sp(), m_disassembly(), m_mutex() {
Expand Down Expand Up @@ -120,7 +120,7 @@ StackFrame::StackFrame(const ThreadSP &thread_sp, user_id_t frame_idx,
nullptr, thread_sp->GetProcess().get()),
m_frame_code_addr(pc_addr), m_sc(), m_flags(), m_frame_base(),
m_frame_base_error(), m_cfa_is_valid(true),
m_stack_frame_kind(StackFrame::Kind::Regular),
m_stack_frame_kind(StackFrame::Kind::Regular), m_artificial(false),
m_behaves_like_zeroth_frame(behaves_like_zeroth_frame),
m_variable_list_sp(), m_variable_list_value_objects(),
m_recognized_frame_sp(), m_disassembly(), m_mutex() {
Expand Down Expand Up @@ -1264,10 +1264,12 @@ bool StackFrame::IsHistorical() const {
return m_stack_frame_kind == StackFrame::Kind::History;
}

bool StackFrame::IsArtificial() const {
return m_stack_frame_kind == StackFrame::Kind::Artificial;
bool StackFrame::IsSynthetic() const {
return m_stack_frame_kind == StackFrame::Kind::Synthetic;
}

bool StackFrame::IsArtificial() const { return m_artificial; }

bool StackFrame::IsHidden() {
if (auto recognized_frame_sp = GetRecognizedFrame())
return recognized_frame_sp->ShouldHide();
Expand Down
6 changes: 4 additions & 2 deletions lldb/source/Target/StackFrameList.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -321,13 +321,14 @@ void StackFrameList::SynthesizeTailCallFrames(StackFrame &next_frame) {
addr_t pc = calleeInfo.address;
// If the callee address refers to the call instruction, we do not want to
// subtract 1 from this value.
const bool artificial = true;
const bool behaves_like_zeroth_frame =
calleeInfo.address_type == CallEdge::AddrType::Call;
SymbolContext sc;
callee->CalculateSymbolContext(&sc);
auto synth_frame = std::make_shared<StackFrame>(
m_thread.shared_from_this(), frame_idx, concrete_frame_idx, cfa,
cfa_is_valid, pc, StackFrame::Kind::Artificial,
cfa_is_valid, pc, StackFrame::Kind::Regular, artificial,
behaves_like_zeroth_frame, &sc);
m_frames.push_back(synth_frame);
LLDB_LOG(log, "Pushed frame {0} at {1:x}", callee->GetDisplayName(), pc);
Expand Down Expand Up @@ -470,7 +471,8 @@ bool StackFrameList::FetchFramesUpTo(uint32_t end_idx,
const bool cfa_is_valid = true;
unwind_frame_sp = std::make_shared<StackFrame>(
m_thread.shared_from_this(), m_frames.size(), idx, cfa, cfa_is_valid,
pc, StackFrame::Kind::Regular, behaves_like_zeroth_frame, nullptr);
pc, StackFrame::Kind::Regular, false, behaves_like_zeroth_frame,
nullptr);

// Create synthetic tail call frames between the previous frame and the
// newly-found frame. The new frame's index may change after this call,
Expand Down
2 changes: 1 addition & 1 deletion lldb/test/API/functionalities/scripted_process/TestScriptedProcess.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -284,6 +284,6 @@ def cleanup():
break
self.assertEqual(idx, int(reg.value, 16))

self.assertTrue(frame.IsArtificial(), "Frame is not artificial")
self.assertTrue(frame.IsSynthetic(), "Frame is not synthetic")
pc = frame.GetPCAddress().GetLoadAddress(target_0)
self.assertEqual(pc, 0x0100001B00)
32 changes: 16 additions & 16 deletions lldb/test/Shell/ScriptInterpreter/Python/Crashlog/app_specific_backtrace_crashlog.test
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@
# CHECK: (lldb) process status --verbose
# CHECK-NEXT: Process 96535 stopped
# CHECK-NEXT: * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_CRASH (code=0, subcode=0x0)
# CHECK-NEXT: frame #0: 0x00000001a08c7224{{.*}}[artificial]
# CHECK-NEXT: frame #0: 0x00000001a08c7224{{.*}}[synthetic]
# CHECK: Extended Crash Information:
# CHECK: Application Specific Information:
# CHECK-NEXT: CoreFoundation: *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** __boundsFail: index 10 beyond bounds [0 .. 3]'
Expand All @@ -21,21 +21,21 @@

# CHECK: (lldb) thread backtrace --extended true
# CHECK: * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_CRASH (code=0, subcode=0x0)
# CHECK-NEXT: * frame #0: 0x00000001a08c7224{{.*}}[artificial]
# CHECK-NEXT: frame #1: 0x00000001a08fdceb{{.*}}[artificial]
# CHECK-NEXT: frame #2: 0x00000001a08372c7{{.*}}[artificial]
# CHECK-NEXT: frame #3: 0x00000001a08b7b17{{.*}}[artificial]
# CHECK-NEXT: frame #4: 0x00000001a08a7a0b{{.*}}[artificial]
# CHECK-NEXT: frame #5: 0x00000001a05ab763{{.*}}[artificial]
# CHECK-NEXT: frame #6: 0x00000001a08b6eb3{{.*}}[artificial]
# CHECK-NEXT: frame #7: 0x00000001a08b9c2b{{.*}}[artificial]
# CHECK-NEXT: frame #8: 0x00000001a08b9bd7{{.*}}[artificial]
# CHECK-NEXT: frame #9: 0x00000001a05a3007{{.*}}[artificial]
# CHECK-NEXT: frame #10: 0x00000001a0b3dcc3{{.*}}[artificial]
# CHECK-NEXT: frame #11: 0x00000001a0b46af3{{.*}}[artificial]
# CHECK-NEXT: frame #12: 0x00000001a09a12a3{{.*}}[artificial]
# CHECK-NEXT: frame #13: 0x00000001047e3ecf asi`main{{.*}}[artificial]
# CHECK-NEXT: frame #14: 0x00000001a05d3e4f{{.*}}[artificial]
# CHECK-NEXT: * frame #0: 0x00000001a08c7224{{.*}}[synthetic]
# CHECK-NEXT: frame #1: 0x00000001a08fdceb{{.*}}[synthetic]
# CHECK-NEXT: frame #2: 0x00000001a08372c7{{.*}}[synthetic]
# CHECK-NEXT: frame #3: 0x00000001a08b7b17{{.*}}[synthetic]
# CHECK-NEXT: frame #4: 0x00000001a08a7a0b{{.*}}[synthetic]
# CHECK-NEXT: frame #5: 0x00000001a05ab763{{.*}}[synthetic]
# CHECK-NEXT: frame #6: 0x00000001a08b6eb3{{.*}}[synthetic]
# CHECK-NEXT: frame #7: 0x00000001a08b9c2b{{.*}}[synthetic]
# CHECK-NEXT: frame #8: 0x00000001a08b9bd7{{.*}}[synthetic]
# CHECK-NEXT: frame #9: 0x00000001a05a3007{{.*}}[synthetic]
# CHECK-NEXT: frame #10: 0x00000001a0b3dcc3{{.*}}[synthetic]
# CHECK-NEXT: frame #11: 0x00000001a0b46af3{{.*}}[synthetic]
# CHECK-NEXT: frame #12: 0x00000001a09a12a3{{.*}}[synthetic]
# CHECK-NEXT: frame #13: 0x00000001047e3ecf asi`main{{.*}}[synthetic]
# CHECK-NEXT: frame #14: 0x00000001a05d3e4f{{.*}}[synthetic]

# CHECK: thread #4294967295: tid = 0x0001, 0x00000001a0a58418{{.*}}, queue = 'Application Specific Backtrace'
# CHECK-NEXT: frame #0: 0x00000001a0a58418{{.*}}
Expand Down
30 changes: 15 additions & 15 deletions lldb/test/Shell/ScriptInterpreter/Python/Crashlog/interactive_crashlog_arm64_register.test
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,9 +15,9 @@

# CHECK: (lldb) thread backtrace
# CHECK-NEXT: * thread #3, stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
# CHECK-NEXT: * frame #0: 0x0000000100ec58f4 multithread-test`bar{{.*}} [artificial]
# CHECK-NEXT: frame #1: 0x0000000100ec591b multithread-test`foo{{.*}} [artificial]
# CHECK-NEXT: frame #2: 0x0000000100ec5a87 multithread-test`compute_pow{{.*}} [artificial]
# CHECK-NEXT: * frame #0: 0x0000000100ec58f4 multithread-test`bar{{.*}} [synthetic]
# CHECK-NEXT: frame #1: 0x0000000100ec591b multithread-test`foo{{.*}} [synthetic]
# CHECK-NEXT: frame #2: 0x0000000100ec5a87 multithread-test`compute_pow{{.*}} [synthetic]

# CHECK: (lldb) thread list
# CHECK-NEXT: Process 22511 stopped
Expand All @@ -27,20 +27,20 @@

# CHECK: (lldb) bt all
# CHECK: thread #1, queue = 'com.apple.main-thread'
# CHECK: frame #{{[0-9]+}}: 0x000000019cc40b84{{.*}} [artificial]
# CHECK: frame #{{[0-9]+}}: 0x0000000100ec5b3b multithread-test`main{{.*}} [artificial]
# CHECK: frame #{{[0-9]+}}: 0x00000002230f8da7{{.*}} [artificial]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc40b84{{.*}} [synthetic]
# CHECK: frame #{{[0-9]+}}: 0x0000000100ec5b3b multithread-test`main{{.*}} [synthetic]
# CHECK: frame #{{[0-9]+}}: 0x00000002230f8da7{{.*}} [synthetic]
# CHECK-NEXT: thread #2
# CHECK-NEXT: frame #0: 0x000000019cc42c9c{{.*}} [artificial]
# CHECK: frame #{{[0-9]+}}: 0x0000000100ec5957 multithread-test`call_and_wait{{.*}} [artificial]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc7e06b{{.*}} [artificial]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc78e2b{{.*}} [artificial]
# CHECK-NEXT: frame #0: 0x000000019cc42c9c{{.*}} [synthetic]
# CHECK: frame #{{[0-9]+}}: 0x0000000100ec5957 multithread-test`call_and_wait{{.*}} [synthetic]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc7e06b{{.*}} [synthetic]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc78e2b{{.*}} [synthetic]
# CHECK-NEXT:* thread #3, stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
# CHECK-NEXT: * frame #0: 0x0000000100ec58f4 multithread-test`bar{{.*}} [artificial]
# CHECK-NEXT: frame #1: 0x0000000100ec591b multithread-test`foo{{.*}} [artificial]
# CHECK-NEXT: frame #2: 0x0000000100ec5a87 multithread-test`compute_pow{{.*}} [artificial]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc7e06b{{.*}} [artificial]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc78e2b{{.*}} [artificial]
# CHECK-NEXT: * frame #0: 0x0000000100ec58f4 multithread-test`bar{{.*}} [synthetic]
# CHECK-NEXT: frame #1: 0x0000000100ec591b multithread-test`foo{{.*}} [synthetic]
# CHECK-NEXT: frame #2: 0x0000000100ec5a87 multithread-test`compute_pow{{.*}} [synthetic]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc7e06b{{.*}} [synthetic]
# CHECK: frame #{{[0-9]+}}: 0x000000019cc78e2b{{.*}} [synthetic]

# CHECK: (lldb) register read
# CHECK: General Purpose Registers:
Expand Down
Loading
Loading