[Lldb-commits] [lldb] [lldb] Parse DWARF CFI for discontinuous functions (PR #137006)

[Pavel Labath via lldb-commits]

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@@ -1345,9 +1343,9 @@ RegisterContextUnwind::SavedLocationForRegister(
         // value instead of the Return Address register.
         // If $pc is not available, fall back to the RA reg.
         UnwindPlan::Row::AbstractRegisterLocation scratch;
-        if (m_frame_type == eTrapHandlerFrame &&
-            active_row->GetRegisterInfo
-              (pc_regnum.GetAsKind (unwindplan_registerkind), scratch)) {
+        if (m_frame_type == eTrapHandlerFrame && active_row &&
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labath wrote:

This is a splattering of defensive checks as it's easier to get a null active row now (some places around here are already checking it, but not all of them).

https://github.com/llvm/llvm-project/pull/137006