[Lldb-commits] [lldb] r261936 - Fix Clang-tidy modernize-use-nullptr and modernize-use-default warnings in source/Commands/CommandObjectThread.cpp; other minor fixes.

Eugene Zelenko via lldb-commits lldb-commits at lists.llvm.org
Thu Feb 25 15:46:36 PST 2016


Author: eugenezelenko
Date: Thu Feb 25 17:46:36 2016
New Revision: 261936

URL: http://llvm.org/viewvc/llvm-project?rev=261936&view=rev
Log:
Fix Clang-tidy modernize-use-nullptr and modernize-use-default warnings in source/Commands/CommandObjectThread.cpp; other minor fixes.

Modified:
    lldb/trunk/source/Commands/CommandObjectThread.cpp

Modified: lldb/trunk/source/Commands/CommandObjectThread.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Commands/CommandObjectThread.cpp?rev=261936&r1=261935&r2=261936&view=diff
==============================================================================
--- lldb/trunk/source/Commands/CommandObjectThread.cpp (original)
+++ lldb/trunk/source/Commands/CommandObjectThread.cpp Thu Feb 25 17:46:36 2016
@@ -37,11 +37,9 @@
 #include "lldb/Target/ThreadPlanStepRange.h"
 #include "lldb/Target/ThreadPlanStepInRange.h"
 
-
 using namespace lldb;
 using namespace lldb_private;
 
-
 //-------------------------------------------------------------------------
 // CommandObjectThreadBacktrace
 //-------------------------------------------------------------------------
@@ -58,7 +56,7 @@ public:
     {
     }
 
-    ~CommandObjectIterateOverThreads() override {}
+    ~CommandObjectIterateOverThreads() override = default;
 
     bool
     DoExecute (Args& command, CommandReturnObject &result) override
@@ -112,7 +110,6 @@ public:
                     result.SetStatus (eReturnStatusFailed);
                     return false;
                 }
-                
             }
             
             for (uint32_t i = 0; i < num_args; i++)
@@ -128,7 +125,6 @@ public:
     }
 
 protected:
-
     // Override this to do whatever you need to do for one thread.
     //
     // If you return false, the iteration will stop, otherwise it will proceed.
@@ -141,7 +137,6 @@ protected:
 
     ReturnStatus m_success_return = eReturnStatusSuccessFinishResult;
     bool m_add_return = true;
-
 };
 
 //-------------------------------------------------------------------------
@@ -151,11 +146,9 @@ protected:
 class CommandObjectThreadBacktrace : public CommandObjectIterateOverThreads
 {
 public:
-
     class CommandOptions : public Options
     {
     public:
-
         CommandOptions (CommandInterpreter &interpreter) :
             Options(interpreter)
         {
@@ -163,9 +156,7 @@ public:
             OptionParsingStarting ();
         }
 
-        ~CommandOptions () override
-        {
-        }
+        ~CommandOptions() override = default;
 
         Error
         SetOptionValue (uint32_t option_idx, const char *option_arg) override
@@ -206,7 +197,6 @@ public:
                 default:
                     error.SetErrorStringWithFormat("invalid short option character '%c'", short_option);
                     break;
-
             }
             return error;
         }
@@ -236,22 +226,20 @@ public:
     };
 
     CommandObjectThreadBacktrace (CommandInterpreter &interpreter) :
-        CommandObjectIterateOverThreads (interpreter,
-                             "thread backtrace",
-                             "Show the stack for one or more threads.  If no threads are specified, show the currently selected thread.  Use the thread-index \"all\" to see all threads.",
-                             NULL,
-                             eCommandRequiresProcess       |
-                             eCommandRequiresThread        |
-                             eCommandTryTargetAPILock      |
-                             eCommandProcessMustBeLaunched |
-                             eCommandProcessMustBePaused   ),
+        CommandObjectIterateOverThreads(interpreter,
+                                        "thread backtrace",
+                                        "Show the stack for one or more threads.  If no threads are specified, show the currently selected thread.  Use the thread-index \"all\" to see all threads.",
+                                        nullptr,
+                                        eCommandRequiresProcess       |
+                                        eCommandRequiresThread        |
+                                        eCommandTryTargetAPILock      |
+                                        eCommandProcessMustBeLaunched |
+                                        eCommandProcessMustBePaused   ),
         m_options(interpreter)
     {
     }
 
-    ~CommandObjectThreadBacktrace() override
-    {
-    }
+    ~CommandObjectThreadBacktrace() override = default;
 
     Options *
     GetOptions () override
@@ -317,10 +305,10 @@ protected:
 OptionDefinition
 CommandObjectThreadBacktrace::CommandOptions::g_option_table[] =
 {
-{ LLDB_OPT_SET_1, false, "count", 'c', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeCount, "How many frames to display (-1 for all)"},
-{ LLDB_OPT_SET_1, false, "start", 's', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeFrameIndex, "Frame in which to start the backtrace"},
-{ LLDB_OPT_SET_1, false, "extended", 'e', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeBoolean, "Show the extended backtrace, if available"},
-{ 0, false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
+{ LLDB_OPT_SET_1, false, "count", 'c', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeCount, "How many frames to display (-1 for all)"},
+{ LLDB_OPT_SET_1, false, "start", 's', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeFrameIndex, "Frame in which to start the backtrace"},
+{ LLDB_OPT_SET_1, false, "extended", 'e', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeBoolean, "Show the extended backtrace, if available"},
+{ 0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr }
 };
 
 enum StepScope
@@ -332,11 +320,9 @@ enum StepScope
 class CommandObjectThreadStepWithTypeAndScope : public CommandObjectParsed
 {
 public:
-
     class CommandOptions : public Options
     {
     public:
-
         CommandOptions (CommandInterpreter &interpreter) :
             Options (interpreter)
         {
@@ -344,9 +330,7 @@ public:
             OptionParsingStarting ();
         }
 
-        ~CommandOptions () override
-        {
-        }
+        ~CommandOptions() override = default;
 
         Error
         SetOptionValue (uint32_t option_idx, const char *option_arg) override
@@ -383,19 +367,16 @@ public:
                 break;
             
             case 'c':
-                {
-                    m_step_count = StringConvert::ToUInt32(option_arg, UINT32_MAX, 0);
-                    if (m_step_count == UINT32_MAX)
-                       error.SetErrorStringWithFormat ("invalid step count '%s'", option_arg);
-                    break;
-                }
+                m_step_count = StringConvert::ToUInt32(option_arg, UINT32_MAX, 0);
+                if (m_step_count == UINT32_MAX)
+                    error.SetErrorStringWithFormat ("invalid step count '%s'", option_arg);
                 break;
+
             case 'C':
-                {
-                    m_class_name.clear();
-                    m_class_name.assign(option_arg);
-                }
+                m_class_name.clear();
+                m_class_name.assign(option_arg);
                 break;
+
             case 'm':
                 {
                     OptionEnumValueElement *enum_values = g_option_table[option_idx].enum_values; 
@@ -413,24 +394,20 @@ public:
                     break;
                 }
                 break;
+
             case 'r':
-                {
-                    m_avoid_regexp.clear();
-                    m_avoid_regexp.assign(option_arg);
-                }
+                m_avoid_regexp.clear();
+                m_avoid_regexp.assign(option_arg);
                 break;
 
             case 't':
-                {
-                    m_step_in_target.clear();
-                    m_step_in_target.assign(option_arg);
-
-                }
+                m_step_in_target.clear();
+                m_step_in_target.assign(option_arg);
                 break;
+
             default:
                 error.SetErrorStringWithFormat("invalid short option character '%c'", short_option);
                 break;
-
             }
             return error;
         }
@@ -444,7 +421,7 @@ public:
 
             // Check if we are in Non-Stop mode
             lldb::TargetSP target_sp = m_interpreter.GetDebugger().GetSelectedTarget();
-            if (target_sp.get() != nullptr && target_sp->GetNonStopModeEnabled())
+            if (target_sp && target_sp->GetNonStopModeEnabled())
                 m_run_mode = eOnlyThisThread;
 
             m_avoid_regexp.clear();
@@ -505,9 +482,7 @@ public:
         m_arguments.push_back (arg);
     }
 
-    ~CommandObjectThreadStepWithTypeAndScope () override
-    {
-    }
+    ~CommandObjectThreadStepWithTypeAndScope() override = default;
 
     Options *
     GetOptions () override
@@ -523,12 +498,12 @@ protected:
         bool synchronous_execution = m_interpreter.GetSynchronous();
 
         const uint32_t num_threads = process->GetThreadList().GetSize();
-        Thread *thread = NULL;
+        Thread *thread = nullptr;
 
         if (command.GetArgumentCount() == 0)
         {
             thread = process->GetThreadList().GetSelectedThread().get();
-            if (thread == NULL)
+            if (thread == nullptr)
             {
                 result.AppendError ("no selected thread in process");
                 result.SetStatus (eReturnStatusFailed);
@@ -546,7 +521,7 @@ protected:
                 return false;
             }
             thread = process->GetThreadList().FindThreadByIndexID(step_thread_idx).get();
-            if (thread == NULL)
+            if (thread == nullptr)
             {
                 result.AppendErrorWithFormat ("Thread index %u is out of range (valid values are 0 - %u).\n", 
                                               step_thread_idx, num_threads);
@@ -588,12 +563,7 @@ protected:
         if (m_options.m_run_mode == eAllThreads)
             bool_stop_other_threads = false;
         else if (m_options.m_run_mode == eOnlyDuringStepping)
-        {
-            if (m_step_type == eStepTypeOut || m_step_type == eStepTypeScripted)
-                bool_stop_other_threads = false;
-            else
-                bool_stop_other_threads = true;
-        }
+            bool_stop_other_threads = (m_step_type != eStepTypeOut && m_step_type != eStepTypeScripted);
         else
             bool_stop_other_threads = true;
 
@@ -639,7 +609,6 @@ protected:
             }
             else
                 new_plan_sp = thread->QueueThreadPlanForStepSingleInstruction (false, abort_other_plans, bool_stop_other_threads);
-                
         }
         else if (m_step_type == eStepTypeOver)
         {
@@ -655,7 +624,6 @@ protected:
                 new_plan_sp = thread->QueueThreadPlanForStepSingleInstruction (true,
                                                                             abort_other_plans, 
                                                                             bool_stop_other_threads);
-
         }
         else if (m_step_type == eStepTypeTrace)
         {
@@ -667,14 +635,14 @@ protected:
         }
         else if (m_step_type == eStepTypeOut)
         {
-            new_plan_sp = thread->QueueThreadPlanForStepOut (abort_other_plans,
-                                                          NULL, 
-                                                          false, 
-                                                          bool_stop_other_threads, 
-                                                          eVoteYes, 
-                                                          eVoteNoOpinion, 
-                                                          thread->GetSelectedFrameIndex(),
-                                                          m_options.m_step_out_avoid_no_debug);
+            new_plan_sp = thread->QueueThreadPlanForStepOut(abort_other_plans,
+                                                            nullptr,
+                                                            false,
+                                                            bool_stop_other_threads,
+                                                            eVoteYes,
+                                                            eVoteNoOpinion,
+                                                            thread->GetSelectedFrameIndex(),
+                                                            m_options.m_step_out_avoid_no_debug);
         }
         else if (m_step_type == eStepTypeScripted)
         {
@@ -705,7 +673,6 @@ protected:
                 }
             }
 
-
             process->GetThreadList().SetSelectedThreadByID (thread->GetID());
 
             const uint32_t iohandler_id = process->GetIOHandlerID();
@@ -757,7 +724,7 @@ g_tri_running_mode[] =
 { eOnlyThisThread,     "this-thread",    "Run only this thread"},
 { eAllThreads,         "all-threads",    "Run all threads"},
 { eOnlyDuringStepping, "while-stepping", "Run only this thread while stepping"},
-{ 0, NULL, NULL }
+{ 0, nullptr, nullptr }
 };
 
 static OptionEnumValueElement
@@ -765,24 +732,23 @@ g_duo_running_mode[] =
 {
 { eOnlyThisThread,     "this-thread",    "Run only this thread"},
 { eAllThreads,         "all-threads",    "Run all threads"},
-{ 0, NULL, NULL }
+{ 0, nullptr, nullptr }
 };
 
 OptionDefinition
 CommandObjectThreadStepWithTypeAndScope::CommandOptions::g_option_table[] =
 {
-{ LLDB_OPT_SET_1, false, "step-in-avoids-no-debug",   'a', OptionParser::eRequiredArgument, NULL, NULL,               0, eArgTypeBoolean,     "A boolean value that sets whether stepping into functions will step over functions with no debug information."},
-{ LLDB_OPT_SET_1, false, "step-out-avoids-no-debug",  'A', OptionParser::eRequiredArgument, NULL, NULL,               0, eArgTypeBoolean,     "A boolean value, if true stepping out of functions will continue to step out till it hits a function with debug information."},
-{ LLDB_OPT_SET_1, false, "count",                     'c', OptionParser::eRequiredArgument, NULL, NULL,               1, eArgTypeCount,     "How many times to perform the stepping operation - currently only supported for step-inst and next-inst."},
-{ LLDB_OPT_SET_1, false, "end-linenumber",            'e', OptionParser::eRequiredArgument, NULL, NULL,               1, eArgTypeLineNum,     "The line at which to stop stepping - defaults to the next line and only supported for step-in and step-over."},
-{ LLDB_OPT_SET_1, false, "run-mode",                  'm', OptionParser::eRequiredArgument, NULL, g_tri_running_mode, 0, eArgTypeRunMode, "Determine how to run other threads while stepping the current thread."},
-{ LLDB_OPT_SET_1, false, "step-over-regexp",          'r', OptionParser::eRequiredArgument, NULL, NULL,               0, eArgTypeRegularExpression,   "A regular expression that defines function names to not to stop at when stepping in."},
-{ LLDB_OPT_SET_1, false, "step-in-target",            't', OptionParser::eRequiredArgument, NULL, NULL,               0, eArgTypeFunctionName,   "The name of the directly called function step in should stop at when stepping into."},
-{ LLDB_OPT_SET_2, false, "python-class",              'C', OptionParser::eRequiredArgument, NULL, NULL,               0, eArgTypePythonClass, "The name of the class that will manage this step - only supported for Scripted Step."},
-{ 0, false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
+{ LLDB_OPT_SET_1, false, "step-in-avoids-no-debug",   'a', OptionParser::eRequiredArgument, nullptr, nullptr,               0, eArgTypeBoolean,     "A boolean value that sets whether stepping into functions will step over functions with no debug information."},
+{ LLDB_OPT_SET_1, false, "step-out-avoids-no-debug",  'A', OptionParser::eRequiredArgument, nullptr, nullptr,               0, eArgTypeBoolean,     "A boolean value, if true stepping out of functions will continue to step out till it hits a function with debug information."},
+{ LLDB_OPT_SET_1, false, "count",                     'c', OptionParser::eRequiredArgument, nullptr, nullptr,               1, eArgTypeCount,     "How many times to perform the stepping operation - currently only supported for step-inst and next-inst."},
+{ LLDB_OPT_SET_1, false, "end-linenumber",            'e', OptionParser::eRequiredArgument, nullptr, nullptr,               1, eArgTypeLineNum,     "The line at which to stop stepping - defaults to the next line and only supported for step-in and step-over."},
+{ LLDB_OPT_SET_1, false, "run-mode",                  'm', OptionParser::eRequiredArgument, nullptr, g_tri_running_mode, 0, eArgTypeRunMode, "Determine how to run other threads while stepping the current thread."},
+{ LLDB_OPT_SET_1, false, "step-over-regexp",          'r', OptionParser::eRequiredArgument, nullptr, nullptr,               0, eArgTypeRegularExpression,   "A regular expression that defines function names to not to stop at when stepping in."},
+{ LLDB_OPT_SET_1, false, "step-in-target",            't', OptionParser::eRequiredArgument, nullptr, nullptr,               0, eArgTypeFunctionName,   "The name of the directly called function step in should stop at when stepping into."},
+{ LLDB_OPT_SET_2, false, "python-class",              'C', OptionParser::eRequiredArgument, nullptr, nullptr,               0, eArgTypePythonClass, "The name of the class that will manage this step - only supported for Scripted Step."},
+{ 0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr }
 };
 
-
 //-------------------------------------------------------------------------
 // CommandObjectThreadContinue
 //-------------------------------------------------------------------------
@@ -790,16 +756,15 @@ CommandObjectThreadStepWithTypeAndScope:
 class CommandObjectThreadContinue : public CommandObjectParsed
 {
 public:
-
     CommandObjectThreadContinue (CommandInterpreter &interpreter) :
-        CommandObjectParsed (interpreter, 
-                             "thread continue",
-                             "Continue execution of one or more threads in an active process.",
-                             NULL,
-                             eCommandRequiresThread        |
-                             eCommandTryTargetAPILock      |
-                             eCommandProcessMustBeLaunched |
-                             eCommandProcessMustBePaused)
+        CommandObjectParsed(interpreter,
+                            "thread continue",
+                            "Continue execution of one or more threads in an active process.",
+                            nullptr,
+                            eCommandRequiresThread        |
+                            eCommandTryTargetAPILock      |
+                            eCommandProcessMustBeLaunched |
+                            eCommandProcessMustBePaused)
     {
         CommandArgumentEntry arg;
         CommandArgumentData thread_idx_arg;
@@ -815,17 +780,14 @@ public:
         m_arguments.push_back (arg);
     }
 
-
-    ~CommandObjectThreadContinue () override
-    {
-    }
+    ~CommandObjectThreadContinue() override = default;
 
     bool
     DoExecute (Args& command, CommandReturnObject &result) override
     {
         bool synchronous_execution = m_interpreter.GetSynchronous ();
 
-        if (!m_interpreter.GetDebugger().GetSelectedTarget().get())
+        if (!m_interpreter.GetDebugger().GetSelectedTarget())
         {
             result.AppendError ("invalid target, create a debug target using the 'target create' command");
             result.SetStatus (eReturnStatusFailed);
@@ -833,7 +795,7 @@ public:
         }
 
         Process *process = m_exe_ctx.GetProcessPtr();
-        if (process == NULL)
+        if (process == nullptr)
         {
             result.AppendError ("no process exists. Cannot continue");
             result.SetStatus (eReturnStatusFailed);
@@ -852,7 +814,7 @@ public:
                 Mutex::Locker locker (process->GetThreadList().GetMutex());
                 const uint32_t num_threads = process->GetThreadList().GetSize();
                 std::vector<Thread *> resume_threads;
-                for (uint32_t i=0; i<argc; ++i)
+                for (uint32_t i = 0; i < argc; ++i)
                 {
                     bool success;
                     const int base = 0;
@@ -893,7 +855,7 @@ public:
                     else
                         result.AppendMessageWithFormat ("Resuming threads: ");
 
-                    for (uint32_t idx=0; idx<num_threads; ++idx)
+                    for (uint32_t idx = 0; idx < num_threads; ++idx)
                     {
                         Thread *thread = process->GetThreadList().GetThreadAtIndex(idx).get();
                         std::vector<Thread *>::iterator this_thread_pos = find(resume_threads.begin(), resume_threads.end(), thread);
@@ -901,7 +863,7 @@ public:
                         if (this_thread_pos != resume_threads.end())
                         {
                             resume_threads.erase(this_thread_pos);
-                            if (resume_threads.size() > 0)
+                            if (!resume_threads.empty())
                                 result.AppendMessageWithFormat ("%u, ", thread->GetIndexID());
                             else
                                 result.AppendMessageWithFormat ("%u ", thread->GetIndexID());
@@ -925,14 +887,14 @@ public:
                 Mutex::Locker locker (process->GetThreadList().GetMutex());
                 const uint32_t num_threads = process->GetThreadList().GetSize();
                 Thread *current_thread = process->GetThreadList().GetSelectedThread().get();
-                if (current_thread == NULL)
+                if (current_thread == nullptr)
                 {
                     result.AppendError ("the process doesn't have a current thread");
                     result.SetStatus (eReturnStatusFailed);
                     return false;
                 }
                 // Set the actions that the threads should each take when resuming
-                for (uint32_t idx=0; idx<num_threads; ++idx)
+                for (uint32_t idx = 0; idx < num_threads; ++idx)
                 {
                     Thread *thread = process->GetThreadList().GetThreadAtIndex(idx).get();
                     if (thread == current_thread)
@@ -948,7 +910,6 @@ public:
                 }
             }
 
-
             StreamString stream;
             Error error;
             if (synchronous_execution)
@@ -989,7 +950,6 @@ public:
 
         return result.Succeeded();
     }
-
 };
 
 //-------------------------------------------------------------------------
@@ -999,7 +959,6 @@ public:
 class CommandObjectThreadUntil : public CommandObjectParsed
 {
 public:
-
     class CommandOptions : public Options
     {
     public:
@@ -1015,9 +974,7 @@ public:
             OptionParsingStarting ();
         }
 
-        ~CommandOptions () override
-        {
-        }
+        ~CommandOptions() override = default;
 
         Error
         SetOptionValue (uint32_t option_idx, const char *option_arg) override
@@ -1036,23 +993,19 @@ public:
                 }
                 break;
                 case 't':
-                {
                     m_thread_idx = StringConvert::ToUInt32 (option_arg, LLDB_INVALID_INDEX32);
                     if (m_thread_idx == LLDB_INVALID_INDEX32)
                     {
                         error.SetErrorStringWithFormat ("invalid thread index '%s'", option_arg);
                     }
-                }
-                break;
+                    break;
                 case 'f':
-                {
                     m_frame_idx = StringConvert::ToUInt32 (option_arg, LLDB_INVALID_FRAME_ID);
                     if (m_frame_idx == LLDB_INVALID_FRAME_ID)
                     {
                         error.SetErrorStringWithFormat ("invalid frame index '%s'", option_arg);
                     }
-                }
-                break;
+                    break;
                 case 'm':
                 {
                     OptionEnumValueElement *enum_values = g_option_table[option_idx].enum_values; 
@@ -1070,7 +1023,6 @@ public:
                 default:
                     error.SetErrorStringWithFormat("invalid short option character '%c'", short_option);
                     break;
-
             }
             return error;
         }
@@ -1102,14 +1054,14 @@ public:
     };
 
     CommandObjectThreadUntil (CommandInterpreter &interpreter) :
-        CommandObjectParsed (interpreter, 
-                             "thread until",
-                             "Run the current or specified thread until it reaches a given line number or address or leaves the current function.",
-                             NULL,
-                             eCommandRequiresThread        |
-                             eCommandTryTargetAPILock      |
-                             eCommandProcessMustBeLaunched |
-                             eCommandProcessMustBePaused   ),
+        CommandObjectParsed(interpreter,
+                            "thread until",
+                            "Run the current or specified thread until it reaches a given line number or address or leaves the current function.",
+                            nullptr,
+                            eCommandRequiresThread        |
+                            eCommandTryTargetAPILock      |
+                            eCommandProcessMustBeLaunched |
+                            eCommandProcessMustBePaused   ),
         m_options (interpreter)
     {
         CommandArgumentEntry arg;
@@ -1126,10 +1078,7 @@ public:
         m_arguments.push_back (arg);
     }
 
-
-    ~CommandObjectThreadUntil () override
-    {
-    }
+    ~CommandObjectThreadUntil() override = default;
 
     Options *
     GetOptions () override
@@ -1144,7 +1093,7 @@ protected:
         bool synchronous_execution = m_interpreter.GetSynchronous ();
 
         Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
-        if (target == NULL)
+        if (target == nullptr)
         {
             result.AppendError ("invalid target, create a debug target using the 'target create' command");
             result.SetStatus (eReturnStatusFailed);
@@ -1152,15 +1101,14 @@ protected:
         }
 
         Process *process = m_exe_ctx.GetProcessPtr();
-        if (process == NULL)
+        if (process == nullptr)
         {
             result.AppendError ("need a valid process to step");
             result.SetStatus (eReturnStatusFailed);
-
         }
         else
         {
-            Thread *thread = NULL;
+            Thread *thread = nullptr;
             std::vector<uint32_t> line_numbers;
 
             if (command.GetArgumentCount() >= 1)
@@ -1187,7 +1135,6 @@ protected:
                 return false;
             }
 
-
             if (m_options.m_thread_idx == LLDB_INVALID_THREAD_ID)
             {
                 thread = process->GetThreadList().GetSelectedThread().get();
@@ -1197,7 +1144,7 @@ protected:
                 thread = process->GetThreadList().FindThreadByIndexID(m_options.m_thread_idx).get();
             }
 
-            if (thread == NULL)
+            if (thread == nullptr)
             {
                 const uint32_t num_threads = process->GetThreadList().GetSize();
                 result.AppendErrorWithFormat ("Thread index %u is out of range (valid values are 0 - %u).\n", 
@@ -1210,9 +1157,8 @@ protected:
             const bool abort_other_plans = false;
 
             StackFrame *frame = thread->GetStackFrameAtIndex(m_options.m_frame_idx).get();
-            if (frame == NULL)
+            if (frame == nullptr)
             {
-
                 result.AppendErrorWithFormat ("Frame index %u is out of range for thread %u.\n", 
                                               m_options.m_frame_idx, 
                                               m_options.m_thread_idx);
@@ -1226,11 +1172,11 @@ protected:
             {
                 // Finally we got here...  Translate the given line number to a bunch of addresses:
                 SymbolContext sc(frame->GetSymbolContext (eSymbolContextCompUnit));
-                LineTable *line_table = NULL;
+                LineTable *line_table = nullptr;
                 if (sc.comp_unit)
                     line_table = sc.comp_unit->GetLineTable();
 
-                if (line_table == NULL)
+                if (line_table == nullptr)
                 {
                     result.AppendErrorWithFormat ("Failed to resolve the line table for frame %u of thread index %u.\n",
                                                  m_options.m_frame_idx, m_options.m_thread_idx);
@@ -1285,7 +1231,7 @@ protected:
                         all_in_function = false;
                 }
 
-                if (address_list.size() == 0)
+                if (address_list.empty())
                 {
                     if (all_in_function)
                         result.AppendErrorWithFormat ("No line entries matching until target.\n");
@@ -1314,11 +1260,8 @@ protected:
                                               m_options.m_thread_idx);
                 result.SetStatus (eReturnStatusFailed);
                 return false;
-
             }
 
-
-
             process->GetThreadList().SetSelectedThreadByID (m_options.m_thread_idx);
 
             StreamString stream;
@@ -1356,20 +1299,18 @@ protected:
     }
 
     CommandOptions m_options;
-
 };
 
 OptionDefinition
 CommandObjectThreadUntil::CommandOptions::g_option_table[] =
 {
-{ LLDB_OPT_SET_1, false, "frame",   'f', OptionParser::eRequiredArgument, NULL, NULL,               0, eArgTypeFrameIndex,   "Frame index for until operation - defaults to 0"},
-{ LLDB_OPT_SET_1, false, "thread",  't', OptionParser::eRequiredArgument, NULL, NULL,               0, eArgTypeThreadIndex,  "Thread index for the thread for until operation"},
-{ LLDB_OPT_SET_1, false, "run-mode",'m', OptionParser::eRequiredArgument, NULL, g_duo_running_mode, 0, eArgTypeRunMode, "Determine how to run other threads while stepping this one"},
-{ LLDB_OPT_SET_1, false, "address", 'a', OptionParser::eRequiredArgument, NULL, NULL,               0, eArgTypeAddressOrExpression, "Run until we reach the specified address, or leave the function - can be specified multiple times."},
-{ 0, false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
+{ LLDB_OPT_SET_1, false, "frame",   'f', OptionParser::eRequiredArgument, nullptr, nullptr,               0, eArgTypeFrameIndex,   "Frame index for until operation - defaults to 0"},
+{ LLDB_OPT_SET_1, false, "thread",  't', OptionParser::eRequiredArgument, nullptr, nullptr,               0, eArgTypeThreadIndex,  "Thread index for the thread for until operation"},
+{ LLDB_OPT_SET_1, false, "run-mode",'m', OptionParser::eRequiredArgument, nullptr, g_duo_running_mode, 0, eArgTypeRunMode, "Determine how to run other threads while stepping this one"},
+{ LLDB_OPT_SET_1, false, "address", 'a', OptionParser::eRequiredArgument, nullptr, nullptr,               0, eArgTypeAddressOrExpression, "Run until we reach the specified address, or leave the function - can be specified multiple times."},
+{ 0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr }
 };
 
-
 //-------------------------------------------------------------------------
 // CommandObjectThreadSelect
 //-------------------------------------------------------------------------
@@ -1377,16 +1318,15 @@ CommandObjectThreadUntil::CommandOptions
 class CommandObjectThreadSelect : public CommandObjectParsed
 {
 public:
-
     CommandObjectThreadSelect (CommandInterpreter &interpreter) :
-        CommandObjectParsed (interpreter,
-                             "thread select",
-                             "Select a thread as the currently active thread.",
-                             NULL,
-                             eCommandRequiresProcess       |
-                             eCommandTryTargetAPILock      |
-                             eCommandProcessMustBeLaunched |
-                             eCommandProcessMustBePaused   )
+        CommandObjectParsed(interpreter,
+                            "thread select",
+                            "Select a thread as the currently active thread.",
+                            nullptr,
+                            eCommandRequiresProcess       |
+                            eCommandTryTargetAPILock      |
+                            eCommandProcessMustBeLaunched |
+                            eCommandProcessMustBePaused   )
     {
         CommandArgumentEntry arg;
         CommandArgumentData thread_idx_arg;
@@ -1402,17 +1342,14 @@ public:
         m_arguments.push_back (arg);
     }
 
-
-    ~CommandObjectThreadSelect () override
-    {
-    }
+    ~CommandObjectThreadSelect() override = default;
 
 protected:
     bool
     DoExecute (Args& command, CommandReturnObject &result) override
     {
         Process *process = m_exe_ctx.GetProcessPtr();
-        if (process == NULL)
+        if (process == nullptr)
         {
             result.AppendError ("no process");
             result.SetStatus (eReturnStatusFailed);
@@ -1428,7 +1365,7 @@ protected:
         uint32_t index_id = StringConvert::ToUInt32(command.GetArgumentAtIndex(0), 0, 0);
 
         Thread *new_thread = process->GetThreadList().FindThreadByIndexID(index_id).get();
-        if (new_thread == NULL)
+        if (new_thread == nullptr)
         {
             result.AppendErrorWithFormat ("invalid thread #%s.\n", command.GetArgumentAtIndex(0));
             result.SetStatus (eReturnStatusFailed);
@@ -1440,10 +1377,8 @@ protected:
         
         return result.Succeeded();
     }
-
 };
 
-
 //-------------------------------------------------------------------------
 // CommandObjectThreadList
 //-------------------------------------------------------------------------
@@ -1451,8 +1386,6 @@ protected:
 class CommandObjectThreadList : public CommandObjectParsed
 {
 public:
-
-
     CommandObjectThreadList (CommandInterpreter &interpreter):
         CommandObjectParsed (interpreter,
                              "thread list",
@@ -1465,9 +1398,7 @@ public:
     {
     }
 
-    ~CommandObjectThreadList() override
-    {
-    }
+    ~CommandObjectThreadList() override = default;
 
 protected:
     bool
@@ -1497,31 +1428,17 @@ protected:
 class CommandObjectThreadInfo : public CommandObjectIterateOverThreads
 {
 public:
-
-    CommandObjectThreadInfo (CommandInterpreter &interpreter) :
-        CommandObjectIterateOverThreads (interpreter,
-                                         "thread info",
-                                         "Show an extended summary of information about thread(s) in a process.",
-                                         "thread info",
-                                         eCommandRequiresProcess       |
-                                         eCommandTryTargetAPILock      |
-                                         eCommandProcessMustBeLaunched |
-                                         eCommandProcessMustBePaused),
-        m_options (interpreter)
-    {
-        m_add_return = false;
-    }
-
     class CommandOptions : public Options
     {
     public:
-
         CommandOptions (CommandInterpreter &interpreter) :
             Options (interpreter)
         {
             OptionParsingStarting ();
         }
 
+        ~CommandOptions() override = default;
+
         void
         OptionParsingStarting () override
         {
@@ -1529,10 +1446,6 @@ public:
             m_json_stopinfo = false;
         }
 
-        ~CommandOptions () override
-        {
-        }
-
         Error
         SetOptionValue (uint32_t option_idx, const char *option_arg) override
         {
@@ -1551,7 +1464,6 @@ public:
 
                 default:
                     return Error("invalid short option character '%c'", short_option);
-
             }
             return error;
         }
@@ -1568,14 +1480,26 @@ public:
         static OptionDefinition g_option_table[];
     };
 
-    Options *
-    GetOptions () override
+    CommandObjectThreadInfo (CommandInterpreter &interpreter) :
+        CommandObjectIterateOverThreads (interpreter,
+                                         "thread info",
+                                         "Show an extended summary of information about thread(s) in a process.",
+                                         "thread info",
+                                         eCommandRequiresProcess       |
+                                         eCommandTryTargetAPILock      |
+                                         eCommandProcessMustBeLaunched |
+                                         eCommandProcessMustBePaused),
+        m_options (interpreter)
     {
-        return &m_options;
+        m_add_return = false;
     }
 
-    ~CommandObjectThreadInfo () override
+    ~CommandObjectThreadInfo() override = default;
+
+    Options *
+    GetOptions () override
     {
+        return &m_options;
     }
 
     bool
@@ -1592,19 +1516,17 @@ public:
     }
 
     CommandOptions m_options;
-
 };
 
 OptionDefinition
 CommandObjectThreadInfo::CommandOptions::g_option_table[] =
 {
-    { LLDB_OPT_SET_ALL, false, "json",'j', OptionParser::eNoArgument, NULL, NULL, 0, eArgTypeNone, "Display the thread info in JSON format."},
-    { LLDB_OPT_SET_ALL, false, "stop-info",'s', OptionParser::eNoArgument, NULL, NULL, 0, eArgTypeNone, "Display the extended stop info in JSON format."},
+    { LLDB_OPT_SET_ALL, false, "json",'j', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Display the thread info in JSON format."},
+    { LLDB_OPT_SET_ALL, false, "stop-info",'s', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Display the extended stop info in JSON format."},
 
-    { 0, false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
+    { 0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr }
 };
 
-
 //-------------------------------------------------------------------------
 // CommandObjectThreadReturn
 //-------------------------------------------------------------------------
@@ -1615,7 +1537,6 @@ public:
     class CommandOptions : public Options
     {
     public:
-
         CommandOptions (CommandInterpreter &interpreter) :
             Options (interpreter),
             m_from_expression (false)
@@ -1624,9 +1545,7 @@ public:
             OptionParsingStarting ();
         }
 
-        ~CommandOptions () override
-        {
-        }
+        ~CommandOptions() override = default;
 
         Error
         SetOptionValue (uint32_t option_idx, const char *option_arg) override
@@ -1651,7 +1570,6 @@ public:
                 default:
                     error.SetErrorStringWithFormat("invalid short option character '%c'", short_option);
                     break;
-
             }
             return error;
         }
@@ -1677,12 +1595,6 @@ public:
         // Instance variables to hold the values for command options.
     };
 
-    Options *
-    GetOptions () override
-    {
-        return &m_options;
-    }
-
     CommandObjectThreadReturn (CommandInterpreter &interpreter) :
         CommandObjectRaw (interpreter,
                           "thread return",
@@ -1707,16 +1619,17 @@ public:
 
         // Push the data for the first argument into the m_arguments vector.
         m_arguments.push_back (arg);
-        
-        
     }
-    
-    ~CommandObjectThreadReturn() override
+
+    ~CommandObjectThreadReturn() override = default;
+
+    Options *
+    GetOptions() override
     {
+        return &m_options;
     }
-    
-protected:
 
+protected:
     bool
     DoExecute (const char *command, CommandReturnObject &result) override
     {
@@ -1785,7 +1698,6 @@ protected:
                     result.AppendErrorWithFormat("Unknown error evaluating result expression.");
                 result.SetStatus (eReturnStatusFailed);
                 return false;
-            
             }
         }
                 
@@ -1805,13 +1717,13 @@ protected:
     }
     
     CommandOptions m_options;
-
 };
+
 OptionDefinition
 CommandObjectThreadReturn::CommandOptions::g_option_table[] =
 {
-{ LLDB_OPT_SET_ALL, false, "from-expression",  'x', OptionParser::eNoArgument, NULL, NULL,               0, eArgTypeNone,     "Return from the innermost expression evaluation."},
-{ 0, false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
+{ LLDB_OPT_SET_ALL, false, "from-expression",  'x', OptionParser::eNoArgument, nullptr, nullptr,               0, eArgTypeNone,     "Return from the innermost expression evaluation."},
+{ 0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr }
 };
 
 //-------------------------------------------------------------------------
@@ -1824,13 +1736,14 @@ public:
     class CommandOptions : public Options
     {
     public:
-
         CommandOptions (CommandInterpreter &interpreter) :
             Options (interpreter)
         {
             OptionParsingStarting ();
         }
 
+        ~CommandOptions() override = default;
+
         void
         OptionParsingStarting () override
         {
@@ -1841,10 +1754,6 @@ public:
             m_force = false;
         }
 
-        ~CommandOptions () override
-        {
-        }
-
         Error
         SetOptionValue (uint32_t option_idx, const char *option_arg) override
         {
@@ -1878,10 +1787,8 @@ public:
                 case 'r':
                     m_force = true;
                     break;
-
                  default:
                     return Error("invalid short option character '%c'", short_option);
-
             }
             return error;
         }
@@ -1901,12 +1808,6 @@ public:
         static OptionDefinition g_option_table[];
     };
 
-    Options *
-    GetOptions () override
-    {
-        return &m_options;
-    }
-
     CommandObjectThreadJump (CommandInterpreter &interpreter) :
         CommandObjectParsed (interpreter,
                           "thread jump",
@@ -1920,12 +1821,15 @@ public:
     {
     }
 
-    ~CommandObjectThreadJump() override
+    ~CommandObjectThreadJump() override = default;
+
+    Options *
+    GetOptions() override
     {
+        return &m_options;
     }
 
 protected:
-
     bool DoExecute (Args& args, CommandReturnObject &result) override
     {
         RegisterContext *reg_ctx = m_exe_ctx.GetRegisterContext();
@@ -1992,44 +1896,43 @@ protected:
 
     CommandOptions m_options;
 };
+
 OptionDefinition
 CommandObjectThreadJump::CommandOptions::g_option_table[] =
 {
-    { LLDB_OPT_SET_1, false, "file", 'f', OptionParser::eRequiredArgument, NULL, NULL, CommandCompletions::eSourceFileCompletion, eArgTypeFilename,
+    { LLDB_OPT_SET_1, false, "file", 'f', OptionParser::eRequiredArgument, nullptr, nullptr, CommandCompletions::eSourceFileCompletion, eArgTypeFilename,
         "Specifies the source file to jump to."},
 
-    { LLDB_OPT_SET_1, true, "line", 'l', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeLineNum,
+    { LLDB_OPT_SET_1, true, "line", 'l', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeLineNum,
         "Specifies the line number to jump to."},
 
-    { LLDB_OPT_SET_2, true, "by", 'b', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeOffset,
+    { LLDB_OPT_SET_2, true, "by", 'b', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeOffset,
         "Jumps by a relative line offset from the current line."},
 
-    { LLDB_OPT_SET_3, true, "address", 'a', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeAddressOrExpression,
+    { LLDB_OPT_SET_3, true, "address", 'a', OptionParser::eRequiredArgument, nullptr, nullptr, 0, eArgTypeAddressOrExpression,
         "Jumps to a specific address."},
 
     { LLDB_OPT_SET_1|
       LLDB_OPT_SET_2|
-      LLDB_OPT_SET_3, false, "force",'r', OptionParser::eNoArgument, NULL, NULL, 0, eArgTypeNone,"Allows the PC to leave the current function."},
+      LLDB_OPT_SET_3, false, "force",'r', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone,"Allows the PC to leave the current function."},
 
-    { 0, false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
+    { 0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr }
 };
 
 //-------------------------------------------------------------------------
 // Next are the subcommands of CommandObjectMultiwordThreadPlan
 //-------------------------------------------------------------------------
 
-
 //-------------------------------------------------------------------------
 // CommandObjectThreadPlanList
 //-------------------------------------------------------------------------
+
 class CommandObjectThreadPlanList : public CommandObjectIterateOverThreads
 {
 public:
-
     class CommandOptions : public Options
     {
     public:
-
         CommandOptions (CommandInterpreter &interpreter) :
             Options(interpreter)
         {
@@ -2037,9 +1940,7 @@ public:
             OptionParsingStarting ();
         }
 
-        ~CommandOptions () override
-        {
-        }
+        ~CommandOptions() override = default;
 
         Error
         SetOptionValue (uint32_t option_idx, const char *option_arg) override
@@ -2050,19 +1951,14 @@ public:
             switch (short_option)
             {
                 case 'i':
-                {
                     m_internal = true;
-                }
-                break;
+                    break;
                 case 'v':
-                {
                     m_verbose = true;
-                }
-                break;
+                    break;
                 default:
                     error.SetErrorStringWithFormat("invalid short option character '%c'", short_option);
                     break;
-
             }
             return error;
         }
@@ -2090,23 +1986,21 @@ public:
     };
 
     CommandObjectThreadPlanList (CommandInterpreter &interpreter) :
-        CommandObjectIterateOverThreads (interpreter,
-                                         "thread plan list",
-                                         "Show thread plans for one or more threads.  If no threads are specified, show the "
-                                         "currently selected thread.  Use the thread-index \"all\" to see all threads.",
-                                         NULL,
-                                         eCommandRequiresProcess       |
-                                         eCommandRequiresThread        |
-                                         eCommandTryTargetAPILock      |
-                                         eCommandProcessMustBeLaunched |
-                                         eCommandProcessMustBePaused   ),
+        CommandObjectIterateOverThreads(interpreter,
+                                        "thread plan list",
+                                        "Show thread plans for one or more threads.  If no threads are specified, show the "
+                                        "currently selected thread.  Use the thread-index \"all\" to see all threads.",
+                                        nullptr,
+                                        eCommandRequiresProcess       |
+                                        eCommandRequiresThread        |
+                                        eCommandTryTargetAPILock      |
+                                        eCommandProcessMustBeLaunched |
+                                        eCommandProcessMustBePaused   ),
         m_options(interpreter)
     {
     }
 
-    ~CommandObjectThreadPlanList () override
-    {
-    }
+    ~CommandObjectThreadPlanList() override = default;
 
     Options *
     GetOptions () override
@@ -2126,32 +2020,33 @@ protected:
         thread.DumpThreadPlans (&strm, desc_level, m_options.m_internal, true);
         return true;
     }
+
     CommandOptions m_options;
 };
 
 OptionDefinition
 CommandObjectThreadPlanList::CommandOptions::g_option_table[] =
 {
-{ LLDB_OPT_SET_1, false, "verbose", 'v', OptionParser::eNoArgument, NULL, NULL, 0, eArgTypeNone, "Display more information about the thread plans"},
-{ LLDB_OPT_SET_1, false, "internal", 'i', OptionParser::eNoArgument, NULL, NULL, 0, eArgTypeNone, "Display internal as well as user thread plans"},
-{ 0, false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
+{ LLDB_OPT_SET_1, false, "verbose", 'v', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Display more information about the thread plans"},
+{ LLDB_OPT_SET_1, false, "internal", 'i', OptionParser::eNoArgument, nullptr, nullptr, 0, eArgTypeNone, "Display internal as well as user thread plans"},
+{ 0, false, nullptr, 0, 0, nullptr, nullptr, 0, eArgTypeNone, nullptr }
 };
 
 class CommandObjectThreadPlanDiscard : public CommandObjectParsed
 {
 public:
     CommandObjectThreadPlanDiscard (CommandInterpreter &interpreter) :
-        CommandObjectParsed (interpreter,
-                             "thread plan discard",
-                             "Discards thread plans up to and including the plan passed as the command argument."
-                             "Only user visible plans can be discarded, use the index from \"thread plan list\""
-                             " without the \"-i\" argument.",
-                             NULL,
-                             eCommandRequiresProcess       |
-                             eCommandRequiresThread        |
-                             eCommandTryTargetAPILock      |
-                             eCommandProcessMustBeLaunched |
-                             eCommandProcessMustBePaused   )
+        CommandObjectParsed(interpreter,
+                            "thread plan discard",
+                            "Discards thread plans up to and including the plan passed as the command argument."
+                            "Only user visible plans can be discarded, use the index from \"thread plan list\""
+                            " without the \"-i\" argument.",
+                            nullptr,
+                            eCommandRequiresProcess       |
+                            eCommandRequiresThread        |
+                            eCommandTryTargetAPILock      |
+                            eCommandProcessMustBeLaunched |
+                            eCommandProcessMustBePaused   )
     {
         CommandArgumentEntry arg;
         CommandArgumentData plan_index_arg;
@@ -2167,7 +2062,7 @@ public:
         m_arguments.push_back (arg);
     }
 
-    ~CommandObjectThreadPlanDiscard () override {}
+    ~CommandObjectThreadPlanDiscard() override = default;
 
     bool
     DoExecute (Args& args, CommandReturnObject &result) override
@@ -2230,9 +2125,7 @@ public:
         LoadSubCommand ("discard", CommandObjectSP (new CommandObjectThreadPlanDiscard (interpreter)));
     }
 
-    ~CommandObjectMultiwordThreadPlan () override {}
-
-
+    ~CommandObjectMultiwordThreadPlan() override = default;
 };
 
 //-------------------------------------------------------------------------
@@ -2257,15 +2150,15 @@ CommandObjectMultiwordThread::CommandObj
                                                     interpreter,
                                                     "thread step-in",
                                                     "Source level single step in specified thread (current thread, if none specified).",
-                                                    NULL,
+                                                    nullptr,
                                                     eStepTypeInto,
                                                     eStepScopeSource)));
-    
+   
     LoadSubCommand ("step-out",   CommandObjectSP (new CommandObjectThreadStepWithTypeAndScope (
                                                     interpreter,
                                                     "thread step-out",
                                                     "Finish executing the function of the currently selected frame and return to its call site in specified thread (current thread, if none specified).",
-                                                    NULL,
+                                                    nullptr,
                                                     eStepTypeOut,
                                                     eStepScopeSource)));
 
@@ -2273,7 +2166,7 @@ CommandObjectMultiwordThread::CommandObj
                                                     interpreter,
                                                     "thread step-over",
                                                     "Source level single step in specified thread (current thread, if none specified), stepping over calls.",
-                                                    NULL,
+                                                    nullptr,
                                                     eStepTypeOver,
                                                     eStepScopeSource)));
 
@@ -2281,7 +2174,7 @@ CommandObjectMultiwordThread::CommandObj
                                                     interpreter,
                                                     "thread step-inst",
                                                     "Single step one instruction in specified thread (current thread, if none specified).",
-                                                    NULL,
+                                                    nullptr,
                                                     eStepTypeTrace,
                                                     eStepScopeInstruction)));
 
@@ -2289,7 +2182,7 @@ CommandObjectMultiwordThread::CommandObj
                                                     interpreter,
                                                     "thread step-inst-over",
                                                     "Single step one instruction in specified thread (current thread, if none specified), stepping over calls.",
-                                                    NULL,
+                                                    nullptr,
                                                     eStepTypeTraceOver,
                                                     eStepScopeInstruction)));
 
@@ -2297,15 +2190,11 @@ CommandObjectMultiwordThread::CommandObj
                                                     interpreter,
                                                     "thread step-scripted",
                                                     "Step as instructed by the script class passed in the -C option.",
-                                                    NULL,
+                                                    nullptr,
                                                     eStepTypeScripted,
                                                     eStepScopeSource)));
 
     LoadSubCommand ("plan", CommandObjectSP (new CommandObjectMultiwordThreadPlan(interpreter)));
 }
 
-CommandObjectMultiwordThread::~CommandObjectMultiwordThread ()
-{
-}
-
-
+CommandObjectMultiwordThread::~CommandObjectMultiwordThread() = default;




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