Fix bug pertaining to rawgeti not supporting int64

luprex/core/cpp/world-difftab.cpp

@@ -22,6 +22,7 @@
 #include "streambuffer.hpp"
 #include "table.hpp"
 #include "world.hpp"
+#include <iostream>
 
 // Given a table and an tnmap, return the table number of the table.
 // Returns zero if the table doesn't have a table number.
@@ -179,6 +180,8 @@ static bool diff_tables(LuaStack &SLS0, LuaSlot stnmap, LuaSlot stab,
     LuaVar skey, mkey, sval, mval, mnil;
     LuaStack SLS(SLS0.state(), skey, sval);
     LuaStack MLS(MLS0.state(), mkey, mval, mnil);
+    assert(MLS.istable(mtab));
+    assert(SLS.istable(stab));
     MLS.set(mnil, LuaNil);
     int nupdates = 0;
 
@@ -399,8 +402,10 @@ void World::diff_tangible_databases(const IdVector &basis, lua_State *master, St
     int s_top = lua_gettop(synch);
     int m_top = lua_gettop(master);
     for (int64_t id : basis) {
-        MLS.rawgeti(mtab, mtangibles, id);
-        SLS.rawgeti(stab, stangibles, id);
+        MLS.rawget(mtab, mtangibles, id);
+        SLS.rawget(stab, stangibles, id);
+        assert(MLS.istable(mtab));
+        assert(SLS.istable(stab));
         int tw = sb->total_writes();
         sb->write_int64(id);
         nmodified += 1;