2 files changed, 8 insertions, 4 deletions
diff --git a/src/tools/fuzzing/fuzzing.cpp b/src/tools/fuzzing/fuzzing.cpp
index 57c7ec6b0..6b54ac56d 100644
--- a/src/tools/fuzzing/fuzzing.cpp
+++ b/src/tools/fuzzing/fuzzing.cpp
@@ -2556,7 +2556,8 @@ Expression* TranslateToFuzzReader::makeBasicRef(Type type) {
   auto heapType = type.getHeapType();
   assert(heapType.isBasic());
   assert(wasm.features.hasReferenceTypes());
-  switch (heapType.getBasic()) {
+  assert(!heapType.isShared() && "TODO: handle shared types");
+  switch (heapType.getBasic(Unshared)) {
     case HeapType::ext: {
       auto null = builder.makeRefNull(HeapType::ext);
       // TODO: support actual non-nullable externrefs via imported globals or
@@ -4233,7 +4234,8 @@ HeapType TranslateToFuzzReader::getSubType(HeapType type) {
     return type;
   }
   if (type.isBasic() && oneIn(2)) {
-    switch (type.getBasic()) {
+    assert(!type.isShared() && "TODO: handle shared types");
+    switch (type.getBasic(Unshared)) {
       case HeapType::func:
         // TODO: Typed function references.
         return pick(FeatureOptions<HeapType>()
diff --git a/src/tools/fuzzing/heap-types.cpp b/src/tools/fuzzing/heap-types.cpp
index 08b4c4453..127d4f5ba 100644
--- a/src/tools/fuzzing/heap-types.cpp
+++ b/src/tools/fuzzing/heap-types.cpp
@@ -377,7 +377,8 @@ struct HeapTypeGeneratorImpl {
       if (rand.oneIn(8)) {
         return type.getBottom();
       }
-      switch (type.getBasic()) {
+      assert(!type.isShared() && "TODO: handle shared types");
+      switch (type.getBasic(Unshared)) {
         case HeapType::func:
           return pickSubFunc();
         case HeapType::cont:
@@ -438,7 +439,8 @@ struct HeapTypeGeneratorImpl {
     // This is not a constructed type, so it must be a basic type.
     assert(type.isBasic());
     candidates.push_back(type);
-    switch (type.getBasic()) {
+    assert(!type.isShared() && "TODO: handle shared types");
+    switch (type.getBasic(Unshared)) {
       case HeapType::ext:
       case HeapType::func:
       case HeapType::exn: