================
@@ -40,8 +41,49 @@ static ConstString g_coro_frame =
ConstString("__coro_frame");
char CPPLanguageRuntime::ID = 0;
+/// A frame recognizer that is installed to hide libc++ implementation
+/// details from the backtrace.
+class LibCXXFrameRecognizer : public StackFrameRecognizer {
+ RegularExpression m_hidden_function_regex;
+ RecognizedStackFrameSP m_hidden_frame;
+
+ struct LibCXXHiddenFrame : public RecognizedStackFrame {
+ bool ShouldHide() override { return true; }
+ };
+
+public:
+ LibCXXFrameRecognizer()
+ : m_hidden_function_regex(
+ R"(^std::__1::(__function.*::operator\(\)|__invoke))"
+ R"((\[.*\])?)" // ABI tag.
+ R"(( const)?$)"), // const.
+ m_hidden_frame(new LibCXXHiddenFrame()) {}
+
+ std::string GetName() override { return "libc++ frame recognizer"; }
+
+ lldb::RecognizedStackFrameSP
+ RecognizeFrame(lldb::StackFrameSP frame_sp) override {
+ if (!frame_sp)
+ return {};
+ auto &sc = frame_sp->GetSymbolContext(lldb::eSymbolContextFunction);
+ if (!sc.function)
+ return {};
+
+ if (m_hidden_function_regex.Execute(sc.function->GetNameNoArguments()))
+ return m_hidden_frame;
+
+ return {};
+ }
+};
+
CPPLanguageRuntime::CPPLanguageRuntime(Process *process)
- : LanguageRuntime(process) {}
+ : LanguageRuntime(process) {
+ if (process)
+ process->GetTarget().GetFrameRecognizerManager().AddRecognizer(
+ StackFrameRecognizerSP(new LibCXXFrameRecognizer()), {},
----------------
adrian-prantl wrote:
same problem, it's a subclass.
https://github.com/llvm/llvm-project/pull/104523
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