Emit a diagnostic message instead of crashing when an argument entry is missing.


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@116114 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Interpreter/CommandObject.cpp b/source/Interpreter/CommandObject.cpp
index 5e2ef9a..2210fc8 100644
--- a/source/Interpreter/CommandObject.cpp
+++ b/source/Interpreter/CommandObject.cpp
@@ -508,7 +508,12 @@
     if (entry->arg_type != arg_type)
         entry = CommandObject::FindArgumentDataByType (arg_type);
 
-    return entry->arg_name;
+    if (entry)
+        return entry->arg_name;
+
+    StreamString str;
+    str << "Arg name for type (" << arg_type << ") not in arg table!";
+    return str.GetData();
 }
 
 bool