[Lldb-commits] [lldb] [lldb] Implement basic support for reverse-continue (PR #99736)

[Pavel Labath via lldb-commits]

labath wrote:

> One thing that's not entirely clear to me from the discussion so far: apparently the public API rules allow adding an overload of `SBProcess::Continue()` with a direction parameter. Do they allow just adding a direction parameter to the existing overload _with a default value_? Because the latter seems exactly like the former in practice, to me.

The two are different when it comes to the ABI. Adding a new function just adds a new symbol. Adding a default argument to an existing function adds a new symbol (the same one as in the first case, as default arguments aren't part of the ABI -- that can be both good and bad, but I digress..)  *and* removes an existing one. That means the code built against the old lldb wouldn't be able to run against the new one (without recompiling). That's what we want to preserve.

https://github.com/llvm/llvm-project/pull/99736