src,buffer: allow heap-allocated typed arrays

configure.py

@@ -1123,10 +1123,6 @@ def configure_v8(o):
   o['variables']['node_use_bundled_v8'] = b(not options.without_bundled_v8)
   o['variables']['force_dynamic_crt'] = 1 if options.shared else 0
   o['variables']['node_enable_d8'] = b(options.enable_d8)
-  # Unconditionally force typed arrays to allocate outside the v8 heap. This
-  # is to prevent memory pointers from being moved around that are returned by
-  # Buffer::Data().
-  o['variables']['v8_typed_array_max_size_in_heap'] = 0
   if options.enable_d8:
     o['variables']['test_isolation_mode'] = 'noop'  # Needed by d8.gyp.
   if options.without_bundled_v8 and options.enable_d8:

lib/buffer.js

@@ -105,21 +105,17 @@ let poolSize, poolOffset, allocPool;
 const zeroFill = bindingZeroFill || [0];
 
 function createUnsafeBuffer(size) {
-  return new FastBuffer(createUnsafeArrayBuffer(size));
-}
-
-function createUnsafeArrayBuffer(size) {
   zeroFill[0] = 0;
   try {
-    return new ArrayBuffer(size);
+    return new FastBuffer(size);
   } finally {
     zeroFill[0] = 1;
   }
 }
 
 function createPool() {
   poolSize = Buffer.poolSize;
-  allocPool = createUnsafeArrayBuffer(poolSize);
+  allocPool = createUnsafeBuffer(poolSize).buffer;
   poolOffset = 0;
 }
 createPool();