aleksandr.urakov added a comment. Yes, I mean exactly the same case. For sequences like you've written yes, the unwind should work, but there must be some problems with saved registers. `x86AssemblyInspectionEngine` doesn't handle instructions like `and %-8, %esp`, so the register save would work only if this instruction hadn't changed the `esp` value (e.g. `esp` was already aligned). Otherwise, if `esp` was changed, the offset to CFA in `RegisterLocation` of some register will be invalid, because it will not take the alignment into account.
Moreover, it is impossible to specify a location for some saved register on a such stack with the `CFA + offset` restore type, because we can't know how `esp` will be changed after `and %-8, %esp`. So I suggest to introduce one more frame address (along with CFA), and make it point to `esp` right after `and ..., %esp`. So any saved register would have `AFA + offset` restore type (I've called for now this frame address as AFA - aligned frame address). As for MSVC-compiled sources, the things are even more interesting. Consider the following program: https://reviews.llvm.org/D53086 _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
