Instantiate in MapInitializer

Author: lucic71

cpp2rust/converter/mapper.cpp

@@ -84,7 +84,13 @@ std::string Map(Converter &converter, clang::QualType qual_type) {
 std::string MapInitializer(Converter &converter, clang::QualType qual_type) {
   auto [rule, subs] =
       RuleRegistry::Search(converter.GetASTContext(), qual_type);
-  if (rule && !rule->initializer.empty()) {
+  if (!rule) {
+    return {};
+  }
+  if (auto n = genericIndex(rule->type_info.type); n && *n <= subs.size()) {
+    return MapInitializer(converter, subs[*n - 1]);
+  }
+  if (!rule->initializer.empty()) {
     return Matcher::InstantiateTgt(converter, subs, rule->initializer);
   }
   return {};