5 files changed, 13 insertions, 1 deletions

diff --git a/src/ir/module-utils.h b/src/ir/module-utils.h
index 22ed89b37..9b1682b91 100644
--- a/src/ir/module-utils.h
+++ b/src/ir/module-utils.h
@@ -129,6 +129,8 @@ inline void copyModule(const Module& in, Module& out) {
   out.start = in.start;
   out.userSections = in.userSections;
   out.debugInfoFileNames = in.debugInfoFileNames;
+  out.features = in.features;
+  out.typeNames = in.typeNames;
 }
 
 inline void clearModule(Module& wasm) {
diff --git a/test/passes/func-metrics.txt b/test/passes/func-metrics.txt
index b224c980c..1ca5d2fd9 100644
--- a/test/passes/func-metrics.txt
+++ b/test/passes/func-metrics.txt
@@ -253,7 +253,7 @@ func: 0
  [vars]         : 0       
  GlobalGet      : 1       
 export: stackSave (0)
- [removable-bytes-without-it]: 56      
+ [removable-bytes-without-it]: 62      
  [total]        : 0       
 (module
  (type $0 (func (result i32)))
diff --git a/test/passes/roundtrip_typenames_features.bin.txt b/test/passes/roundtrip_typenames_features.bin.txt
new file mode 100644
index 000000000..852dea7f9
--- /dev/null
+++ b/test/passes/roundtrip_typenames_features.bin.txt
@@ -0,0 +1,9 @@
+(module
+ (type $ref?|$NamedStruct|_=>_none (func (param (ref null $NamedStruct))))
+ (type $NamedStruct (struct ))
+ (export "export" (func $0))
+ (func $0 (param $0 (ref null $NamedStruct))
+  (nop)
+ )
+ ;; features section: reference-types, gc
+)
diff --git a/test/passes/roundtrip_typenames_features.passes b/test/passes/roundtrip_typenames_features.passes
new file mode 100644
index 000000000..490fcd42f
--- /dev/null
+++ b/test/passes/roundtrip_typenames_features.passes
@@ -0,0 +1 @@
+roundtrip
diff --git a/test/passes/roundtrip_typenames_features.wasm b/test/passes/roundtrip_typenames_features.wasm
new file mode 100644
index 000000000..822accaa5
--- /dev/null
+++ b/test/passes/roundtrip_typenames_features.wasm