Index: lldb/examples/python/crashlog.py
===================================================================
--- lldb/examples/python/crashlog.py
+++ lldb/examples/python/crashlog.py
@@ -923,7 +923,7 @@
         pass
 
     def __call__(self, debugger, command, exe_ctx, result):
-        SymbolicateCrashLogs(debugger, shlex.split(command))
+        SymbolicateCrashLogs(debugger, shlex.split(command), result)
 
     def get_short_help(self):
         return "Symbolicate one or more darwin crash log files."
@@ -1008,12 +1008,15 @@
         for error in crash_log.errors:
             print(error)
 
-def load_crashlog_in_scripted_process(debugger, crash_log_file, options):
-    result = lldb.SBCommandReturnObject()
+def load_crashlog_in_scripted_process(debugger, crash_log_file, options, result):
+    def error(message, sb_error=lldb.SBError()):
+        nonlocal result
+        result.SetError(sb_error, message)
+        return
 
     crashlog_path = os.path.expanduser(crash_log_file)
     if not os.path.exists(crashlog_path):
-        result.PutCString("error: crashlog file %s does not exist" % crashlog_path)
+        return error("crashlog file %s does not exist" % crashlog_path)
 
     crashlog = CrashLogParser().parse(debugger, crashlog_path, False)
 
@@ -1032,19 +1035,15 @@
         target = debugger.GetTargetAtIndex(0)
     # 4. Fail
     if target is None or not target.IsValid():
-        result.PutCString("error: couldn't create target")
-        return
+        return error("couldn't create target")
 
     ci = debugger.GetCommandInterpreter()
     if not ci:
-        result.PutCString("error: couldn't get command interpreter")
-        return
+        return error("couldn't get command interpreter")
 
-    res = lldb.SBCommandReturnObject()
-    ci.HandleCommand('script from lldb.macosx import crashlog_scripted_process', res)
-    if not res.Succeeded():
-        result.PutCString("error: couldn't import crashlog scripted process module")
-        return
+    ci.HandleCommand('script from lldb.macosx import crashlog_scripted_process', result)
+    if not result.Succeeded():
+        return error("couldn't import crashlog scripted process module")
 
     structured_data = lldb.SBStructuredData()
     structured_data.SetFromJSON(json.dumps({ "crashlog_path" : crashlog_path,
@@ -1053,11 +1052,11 @@
     launch_info.SetProcessPluginName("ScriptedProcess")
     launch_info.SetScriptedProcessClassName("crashlog_scripted_process.CrashLogScriptedProcess")
     launch_info.SetScriptedProcessDictionary(structured_data)
-    error = lldb.SBError()
-    process = target.Launch(launch_info, error)
+    sb_error = lldb.SBError()
+    process = target.Launch(launch_info, sb_error)
 
-    if not process or error.Fail():
-        return
+    if not process or sb_error.Fail():
+        return error("couldn't launch Scripted Process", sb_error)
 
     @contextlib.contextmanager
     def synchronous(debugger):
@@ -1213,7 +1212,7 @@
 be disassembled and lookups can be performed using the addresses found in the crash log.'''
     return CreateSymbolicateCrashLogOptions('crashlog', description, True)
 
-def SymbolicateCrashLogs(debugger, command_args):
+def SymbolicateCrashLogs(debugger, command_args, result):
     option_parser = CrashLogOptionParser()
 
     if not len(command_args):
@@ -1251,15 +1250,16 @@
         for crash_log_file in args:
             if should_run_in_interactive_mode(options, ci):
                 load_crashlog_in_scripted_process(debugger, crash_log_file,
-                                                  options)
+                                                  options, result)
             else:
                 crash_log = CrashLogParser().parse(debugger, crash_log_file, options.verbose)
-                SymbolicateCrashLog(crash_log, options)
+                SymbolicateCrashLog(crash_log, options, result)
 
 if __name__ == '__main__':
     # Create a new debugger instance
     debugger = lldb.SBDebugger.Create()
-    SymbolicateCrashLogs(debugger, sys.argv[1:])
+    result = lldb.SBCommandReturnObject()
+    SymbolicateCrashLogs(debugger, sys.argv[1:], result)
     lldb.SBDebugger.Destroy(debugger)
 
 def __lldb_init_module(debugger, internal_dict):