deserialize MethodTables in a world-aware manner

Author: vtjnash

base/serialize.jl

@@ -410,7 +410,7 @@ function serialize_typename_body(s::AbstractSerializer, t::TypeName)
     serialize(s, t.primary.ninitialized)
     if isdefined(t, :mt)
         serialize(s, t.mt.name)
-        serialize(s, t.mt.defs)
+        serialize(s, collect(Base.MethodList(t.mt)))
         serialize(s, t.mt.max_args)
         if isdefined(t.mt, :kwsorter)
             serialize(s, t.mt.kwsorter)
@@ -788,8 +788,10 @@ function deserialize_typename_body(s::AbstractSerializer, tn, number, name, mod,
         if makenew
             tn.mt = ccall(:jl_new_method_table, Any, (Any, Any), name, mod)
             tn.mt.name = mtname
-            tn.mt.defs = defs
             tn.mt.max_args = maxa
+            for def in defs
+                ccall(:jl_method_table_insert, Void, (Any, Any, Ptr{Void}), tn.mt, def, C_NULL)
+            end
         end
         tag = Int32(read(s.io, UInt8)::UInt8)
         if tag != UNDEFREF_TAG

src/gf.c

@@ -1016,7 +1016,7 @@ static int invalidate_conflicting(jl_typemap_entry_t *oldentry, struct typemap_i
     return 1;
 }
 
-void jl_method_table_insert(jl_methtable_t *mt, jl_method_t *method, jl_tupletype_t *simpletype)
+JL_DLLEXPORT void jl_method_table_insert(jl_methtable_t *mt, jl_method_t *method, jl_tupletype_t *simpletype)
 {
     assert(jl_is_method(method));
     assert(jl_is_mtable(mt));