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b07a799752
Summary: The DWARF spec states that the DWARF stack arguments are numbered from the top. Our implementation of DW_OP_pick was counting them from the bottom. This bug probably wasn't noticed because nobody (except my upcoming postfix-to-DWARF converter) uses DW_OP_pick, but I've cross-checked with gdb to confirm that counting from the top is the expected behavior. This patch fixes the implementation to match the spec and gdb behavior and adds a test. Reviewers: jasonmolenda, clayborg Subscribers: mgorny, aprantl, lldb-commits Differential Revision: https://reviews.llvm.org/D61182 llvm-svn: 359436