1 files changed, 9 insertions, 2 deletions

diff --git a/src/asm2wasm.h b/src/asm2wasm.h
index c13c847e7..cb1998aa4 100644
--- a/src/asm2wasm.h
+++ b/src/asm2wasm.h
@@ -431,6 +431,7 @@ private:
     if (expression->is<Block>()) return expression->dyn_cast<Block>();
     auto ret = allocator.alloc<Block>();
     ret->list.push_back(expression);
+    ret->finalize();
     return ret;
   }
 
@@ -1154,7 +1155,7 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) {
             select->condition = isNegative;
             select->type = i32;
             block->list.push_back(select);
-            block->type = i32;
+            block->finalize();
             return block;
           } else if (value->type == f32 || value->type == f64) {
             auto ret = allocator.alloc<Unary>();
@@ -1237,6 +1238,7 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) {
           block = allocator.alloc<Block>();
           block->name = name;
           block->list.push_back(ret);
+          block->finalize();
           ret = block;
         }
       }
@@ -1279,6 +1281,7 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) {
         auto body = allocator.alloc<Block>();
         body->list.push_back(condition);
         body->list.push_back(process(ast[2]));
+        body->finalize();
         ret->body = body;
       }
       // loops do not automatically loop, add a branch back
@@ -1313,6 +1316,7 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) {
           auto block = allocator.alloc<Block>();
           block->list.push_back(child);
           block->name = stop;
+          block->finalize();
           return block;
         } else {
           auto loop = allocator.alloc<Loop>();
@@ -1376,6 +1380,7 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) {
       body->list.push_back(condition);
       body->list.push_back(process(fbody));
       body->list.push_back(process(finc));
+      body->finalize();
       ret->body = body;
       // loops do not automatically loop, add a branch back
       Block* block = blockify(ret->body);
@@ -1389,6 +1394,7 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) {
       // add an outer block for the init as well
       outer->list.push_back(process(finit));
       outer->list.push_back(ret);
+      outer->finalize();
       return outer;
     } else if (what == LABEL) {
       assert(parentLabel.isNull());
@@ -1405,7 +1411,7 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) {
       auto ret = allocator.alloc<Block>();
       ret->list.push_back(process(ast[1]));
       ret->list.push_back(process(ast[2]));
-      ret->type = ret->list[1]->type;
+      ret->finalize();
       return ret;
     } else if (what == SWITCH) {
       IString name;
@@ -1510,6 +1516,7 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) {
     for (unsigned i = from; i < ast->size(); i++) {
       block->list.push_back(process(ast[i]));
     }
+    block->finalize();
     return block;
   };
   // body