vendor/lldb/lldb-trunk-r375505vendor/lldb

1 files changed, 6 insertions, 4 deletions

diff --git a/include/lldb/Target/Unwind.h b/include/lldb/Target/Unwind.h
index a648e063e34b2..652918ddad43b 100644
--- a/include/lldb/Target/Unwind.h
+++ b/include/lldb/Target/Unwind.h
@@ -37,9 +37,10 @@ public:
     lldb::addr_t cfa;
     lldb::addr_t pc;
     uint32_t idx;
+    bool behaves_like_zeroth_frame = (end_idx == 0);
 
     for (idx = 0; idx < end_idx; idx++) {
-      if (!DoGetFrameInfoAtIndex(idx, cfa, pc)) {
+      if (!DoGetFrameInfoAtIndex(idx, cfa, pc, behaves_like_zeroth_frame)) {
         break;
       }
     }
@@ -47,9 +48,9 @@ public:
   }
 
   bool GetFrameInfoAtIndex(uint32_t frame_idx, lldb::addr_t &cfa,
-                           lldb::addr_t &pc) {
+                           lldb::addr_t &pc, bool &behaves_like_zeroth_frame) {
     std::lock_guard<std::recursive_mutex> guard(m_unwind_mutex);
-    return DoGetFrameInfoAtIndex(frame_idx, cfa, pc);
+    return DoGetFrameInfoAtIndex(frame_idx, cfa, pc, behaves_like_zeroth_frame);
   }
 
   lldb::RegisterContextSP CreateRegisterContextForFrame(StackFrame *frame) {
@@ -66,7 +67,8 @@ protected:
   virtual uint32_t DoGetFrameCount() = 0;
 
   virtual bool DoGetFrameInfoAtIndex(uint32_t frame_idx, lldb::addr_t &cfa,
-                                     lldb::addr_t &pc) = 0;
+                                     lldb::addr_t &pc,
+                                     bool &behaves_like_zeroth_frame) = 0;
 
   virtual lldb::RegisterContextSP
   DoCreateRegisterContextForFrame(StackFrame *frame) = 0;