jasonmolenda added inline comments.
================
Comment at: lldb/source/Target/RegisterContextUnwind.cpp:90
// check if m_current_pc is valid
if (unwind_plan_sp->PlanValidAtAddress(m_current_pc)) {
// yes - current offset can be used as is
----------------
clayborg wrote:
> Don't we want to subtract 1 here? Otherwise this function might return true
> incorrectly if we actually need to subtract at least 1 from the PC
honestly this method is a bit suspect, when we look at it today. It's first
"is $pc within ByteSize", then "ok is pc-1 within ByteSize", with a bonus check
if somehow we have a negative offset. Maybe it became suspect with revision
over time. I don't think it's wrong, but it's not written with much clarity
and I should look into how it's changed over time to see if there was a cleaner
vision of its goals originally...
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D124957/new/
https://reviews.llvm.org/D124957
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