[LLDB] Handle possible resume thread error

[Emmmer]

Summary

In this switch case we didn't handle possible errors in ResumeThread(), it's hard to get helpful information when it goes wrong.

[DavidSpickett]

LGTM

lldb/source/Plugins/Process/Linux/NativeProcessLinux.cpp

943

Nit: remove the {} to fit with the lldb style of not using them for single statement if body.

lldb/source/Plugins/Process/Linux/NativeProcessLinux.cpp

for (const auto &thread : m_threads) {
     LLDB_LOG(log, "processing resume action state {0} for pid {1} tid {2}",
              action->state, GetID(), thread->GetID());
 
     switch (action->state) {
     case eStateRunning:
     case eStateStepping: {
       // Run the thread, possibly feeding it the signal.
       const int signo = action->signal;
-      ResumeThread(static_cast<NativeThreadLinux &>(*thread), action->state,
-                   signo);
+      Status error = ResumeThread(static_cast<NativeThreadLinux &>(*thread),
+                                  action->state, signo);
+      if (error.Fail())
+        return Status("NativeProcessLinux::%s: failed to resume thread "
+                      "for pid %" PRIu64 ", tid %" PRIu64 ", error = %s",
+                      __FUNCTION__, GetID(), thread->GetID(),
+                      error.AsCString());
+
       break;
     }
 
     case eStateSuspended:
     case eStateStopped:
       break;
 
     default: