Python summaries for LLDB in CLion on Windows

foo.md

Python summaries for LLDB in CLion on Windows

• add /.lldbinit:

settings set target.load-cwd-lldbinit true

• add /.lldbinit:

command script import <dir/formatter.py> # e.g. formatters/motley_formatter.py

• CLion: turn on MSVC+lldb (or else default is gdb)
  • Settings > Build,Execution,Deployment > CMake
  • Change toolchain to "Visual Studio"
• Categories seems broken on CLion, use default category
  • just dont provide category, omit -w or --category
• Sometimes lldb uses the struct name sometimes typedef
  • if you define your structs like:

		typede struct foo {
			int a;
		} foo_t

• you will need to add pattern to match both
  • one option is to use regex:

		debugger.HandleCommand('type summary add --regex "^mo_name(_t)?$" --python-function motley_formatter.mo_name_SummaryProvider')

• The shorthand params sometimes confuse lldb, use the full ones (the real issue is probably some param order thing)
  • --regex instead of -x
  • --python-function not -F
  • etc
• CLion adds synthetic types for unnamed unions
  • use raw_struct = valobj.GetNonSyntheticValue()
• valobj.CreateValueFromAddress() does not always work for pointers to heap arrays, but valobj.CreateChildAtOffset() might work