Function testMemoryGrowZeroInitialSizeBase

deps/v8/test/mjsunit/wasm/grow-memory.js:167–198

(size, load_fn, store_fn)

})();

function testMemoryGrowZeroInitialSizeBase(size, load_fn, store_fn) {
  var builder = genMemoryGrowBuilder();
  builder.addMemory(0, undefined);
  var module = builder.instantiate();
  var offset;
  var load = module.exports[load_fn];
  var store = module.exports[store_fn];
  function peek() { return load(offset); }
  function poke(value) { return store(offset, value); }
  function growMem(pages) { return module.exports.grow_memory(pages); }

  assertTraps(kTrapMemOutOfBounds, peek);
  assertTraps(kTrapMemOutOfBounds, poke);

  assertEquals(0, growMem(1));

  // Instead of checking every offset, check the first 5.
  for(offset = 0; offset <= 4; offset++) {
    poke(20);
    assertEquals(20, peek());
  }

  // Check the last 5 valid ones.
  for(offset = kPageSize - (size * 4); offset <= kPageSize - size; offset++) {
    poke(20);
    assertEquals(20, peek());
  }

  for(offset = kPageSize - (size - 1); offset <= kPageSize + 5; offset++) {
    assertTraps(kTrapMemOutOfBounds, peek);
  }
}

(function testMemoryGrowZeroInitialSize32() {
  print(arguments.callee.name);