[LLDB] Add a target.launch-working-dir setting (#113521)

Internally we use bazel in a way in which it can drop you in a LLDB
session with the target launched in a particular cwd, which is needed
for things to work. We've been making this automation work via `process
launch -w`. However, if later the user wants to restart the process with
`r`, then they end up using a different cwd for relaunching the process.
As a way to fix this, I'm adding a target-level setting that allows
configuring a default cwd used for launching the process without needing
the user to specify it manually.

1 files changed, 7 insertions, 0 deletions

diff --git a/lldb/source/Commands/CommandObjectProcess.cpp b/lldb/source/Commands/CommandObjectProcess.cpp
index e7c7d07..7444e46 100644
--- a/lldb/source/Commands/CommandObjectProcess.cpp
+++ b/lldb/source/Commands/CommandObjectProcess.cpp
@@ -201,6 +201,13 @@ protected:
     if (target->GetDisableSTDIO())
       m_options.launch_info.GetFlags().Set(eLaunchFlagDisableSTDIO);
 
+    if (!m_options.launch_info.GetWorkingDirectory()) {
+      if (llvm::StringRef wd = target->GetLaunchWorkingDirectory();
+          !wd.empty()) {
+        m_options.launch_info.SetWorkingDirectory(FileSpec(wd));
+      }
+    }
+
     // Merge the launch info environment with the target environment.
     Environment target_env = target->GetEnvironment();
     m_options.launch_info.GetEnvironment().insert(target_env.begin(),