Commits on Aug 20, 2024

1. [lldb] Extend frame recognizers to hide frames from backtraces …

   Compilers and language runtimes often use helper functions that are
   fundamentally uninteresting when debugging anything but the
   compiler/runtime itself. This patch introduces a user-extensible
   mechanism that allows for these frames to be hidden from backtraces
   and automatically skipped over when navigating the stack with `up` and
   `down`, and when stepping out of the current frame.
   
   This does not affect the numbering of frames, so `f <N>` will still
   provide access to the hidden frames. The `bt` output will also print a
   hint that frames have been hidden.
   
   My primary motivation for this feature is to hide thunks in the Swift
   programming language, but I'm including an example recognizer for
   `std::function::operator()` that I wished for myself many times while
   debugging LLDB.
   
   The functionality is user-extensible via Python recognizers and
   exposed through the SBAPI via SBFrame::IsHidden().
   
   rdar://126629381

   

   adrian-prantl committed Aug 20, 2024
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