[Lldb-commits] [lldb] [lldb] Check buffer allocation in DW_OP_piece empty-stack path (PR #207009)

[Felipe de Azevedo Piovezan via lldb-commits]

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@@ -1085,7 +1085,10 @@ static llvm::Error Evaluate_DW_OP_piece(EvalContext &eval_ctx,
     // In a multi-piece expression, this means that the current piece is
     // not available. Fill with zeros for now by resizing the data and
     // appending it
-    curr_piece.ResizeData(piece_byte_size);
+    if (curr_piece.ResizeData(piece_byte_size) != piece_byte_size)
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felipepiovezan wrote:

Should we also try to guard against values that are obviously too big? Not sure what the current "state of art" is for sanitizing dwarf input

https://github.com/llvm/llvm-project/pull/207009