dummy gc

tests/compiler.js

@@ -231,9 +231,8 @@ tests.forEach(filename => {
         let memory = new WebAssembly.Memory({ initial: 10 });
         let exports = {};
 
-        const RUNTIME_HEADER_SIZE = 8; // 16 if GC is present
-
         function getString(ptr) {
+          const RUNTIME_HEADER_SIZE = exports[".capabilities"] & 2 ? 16 : 8;
           if (!ptr) return "null";
           var U32 = new Uint32Array(exports.memory ? exports.memory.buffer : memory.buffer);
           var U16 = new Uint16Array(exports.memory ? exports.memory.buffer : memory.buffer);

tests/compiler/std/array.ts

@@ -1,7 +1,10 @@
 import "allocator/arena";
+import "collector/dummy";
 import { Array } from "array";
 import { COMPARATOR } from "util/sort";
 
+@start export function main(): void {}
+
 // Obtains the internal capacity of an array from its backing buffer.
 function internalCapacity<T>(array: Array<T>): i32 {
   // the memory region used by the backing buffer might still be larger in that the ArrayBuffer