diff --git a/lldb/source/API/SBLaunchInfo.cpp b/lldb/source/API/SBLaunchInfo.cpp
--- a/lldb/source/API/SBLaunchInfo.cpp
+++ b/lldb/source/API/SBLaunchInfo.cpp
@@ -377,19 +377,25 @@
   return LLDB_RECORD_RESULT(data);
 }
 
-void SBLaunchInfo::SetScriptedProcessDictionary(lldb::SBStructuredData dict) {
+void SBLaunchInfo::SetScriptedProcessDictionary(
+    lldb::SBStructuredData sb_dict) {
   LLDB_RECORD_METHOD(void, SBLaunchInfo, SetScriptedProcessDictionary,
-                     (lldb::SBStructuredData), dict);
+                     (lldb::SBStructuredData), sb_dict);
 
   SBStream stream;
-  SBError error = dict.GetAsJSON(stream);
+  SBError error = sb_dict.GetAsJSON(stream);
 
   if (error.Fail())
     return;
 
-  StructuredData::DictionarySP dict_sp;
-  llvm::json::OStream s(stream.ref().AsRawOstream());
-  dict_sp->Serialize(s);
+  StructuredData::ObjectSP obj_sp =
+      StructuredData::ParseJSON(std::string(stream.GetData()));
+  if (!obj_sp)
+    return;
+
+  StructuredData::DictionarySP dict_sp(obj_sp->GetAsDictionary());
+  if (!dict_sp)
+    return;
 
   m_opaque_sp->SetScriptedProcessDictionarySP(dict_sp);
 }