From ee6b281ae3a51fe7d728225f3006b665976b6792 Mon Sep 17 00:00:00 2001
From: Ben Lubar <ben.lubar@gmail.com>
Date: Wed, 19 Feb 2020 11:40:31 -0600
Subject: [PATCH] allow check-structures-sanity to check the size of the value
 explicitly specified in a lua expression rather than just its descendants.

print an error if getting the type identity fails.
---
 plugins/devel/check-structures-sanity.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/devel/check-structures-sanity.cpp b/plugins/devel/check-structures-sanity.cpp
index f21fed278..7af18c7a0 100644
--- a/plugins/devel/check-structures-sanity.cpp
+++ b/plugins/devel/check-structures-sanity.cpp
@@ -165,12 +165,14 @@ static command_result command(color_ostream & out, std::vector<std::string> & pa
 
         ToCheck ref;
         ref.path.push_back(parameters.at(0));
+        ref.path.push_back(""); // tell check_struct that it is a pointer
         ref.ptr = get_object_ref(State, -1);
         lua_getfield(State, -1, "_type");
         lua_getfield(State, -1, "_identity");
         ref.identity = reinterpret_cast<type_identity *>(lua_touserdata(State, -1));
         if (!ref.identity)
         {
+            out.printerr("could not determine type identity\n");
             return CR_FAILURE;
         }