1 files changed, 1 insertions, 1 deletions
diff --git a/src/wasm-s-parser.h b/src/wasm-s-parser.h
index 97399233c..0893a5bba 100644
--- a/src/wasm-s-parser.h
+++ b/src/wasm-s-parser.h
@@ -495,7 +495,7 @@ private:
       makeFunction();
       body = allocator.alloc<Nop>();
     }
-    assert(currFunction->result == result);
+    if (currFunction->result != result) throw ParseException("bad func declaration", s.line, s.col);
     currFunction->body = body;
     currFunction->type = type;
     wasm.addFunction(currFunction.release());