Use symbol name not function name

Author: kastiglione

lldb/source/Plugins/Language/Swift/SwiftFrameRecognizers.cpp

@@ -240,23 +240,33 @@ class SwiftExceptionBreakpointFrameRecognizer : public StackFrameRecognizer {
       if (!thread_sp)
         return {};
 
-      StackFrameSP frame_sp;
-      StringRef name = m_frame_sp->GetFunctionName();
-      if (name == "swift_willThrow")
-        frame_sp = thread_sp->GetStackFrameAtIndex(1);
-      else if (name == "swift_willThrowTypedImpl")
-        frame_sp = thread_sp->GetStackFrameAtIndex(2);
+      StringRef symbol_name;
+      {
+        SymbolContext sc = m_frame_sp->GetSymbolContext(eSymbolContextSymbol);
+        if (!sc.symbol)
+          return {};
+        symbol_name = sc.symbol->GetName();
+      }
+
+      StackFrameSP relevant_frame_sp;
+      if (symbol_name == "swift_willThrow")
+        relevant_frame_sp = thread_sp->GetStackFrameAtIndex(1);
+      else if (symbol_name == "swift_willThrowTypedImpl")
+        relevant_frame_sp = thread_sp->GetStackFrameAtIndex(2);
       else {
         assert(false && "unexpected frame name");
         return {};
       }
 
-      // Check if source is available for the identified frame.
-      SymbolContext sc = frame_sp->GetSymbolContext(eSymbolContextCompUnit);
-      if (!sc.comp_unit)
-        return {};
+      {
+        // Check if source is available for the identified frame.
+        SymbolContext sc =
+            relevant_frame_sp->GetSymbolContext(eSymbolContextSymbol);
+        if (!sc.comp_unit)
+          return {};
+      }
 
-      return frame_sp;
+      return relevant_frame_sp;
     }
 
   private: