electron/patches/v8/add_realloc.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Mon, 22 Oct 2018 10:47:11 -0700
Subject: add_realloc.patch

Blink overrides ArrayBuffer's allocator with its own one, while Node simply
uses malloc and free, so we need to use v8's allocator in Node. As part of the
10.6.0 upgrade, we needed to make SerializerDelegate accept an allocator
argument in its constructor, and override ReallocateBufferMemory and
FreeBufferMemory to use the allocator. We cannot simply allocate and then memcpy
when we override ReallocateBufferMemory, so we therefore need to implement
Realloc on the v8 side.

diff --git a/include/v8.h b/include/v8.h
index f3a05531aa8b9d8c2b9c04ffaff505dbbef9e46d..fe86e1a17f2cad844ef92f45a8da6e7fee4eba49 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -4926,6 +4926,13 @@ class V8_EXPORT ArrayBuffer : public Object {
      */
     virtual void* AllocateUninitialized(size_t length) = 0;
 
+    /**
+     * Free the memory block of size |length|, pointed to by |data|.
+     * That memory must be previously allocated by |Allocate| and not yet freed
+     * with a call to |Free| or |Realloc|
+     */
+    virtual void* Realloc(void* data, size_t length);
+
     /**
      * Free the memory block of size |length|, pointed to by |data|.
      * That memory is guaranteed to be previously allocated by |Allocate|.
diff --git a/src/api/api.cc b/src/api/api.cc
index 15ccbbe9cca3f15751a720c0cab10d815e59d51d..f6f2ba988d95660637f6733dafdd12db7acaa992 100644
--- a/src/api/api.cc
+++ b/src/api/api.cc
@@ -516,6 +516,10 @@ void V8::SetSnapshotDataBlob(StartupData* snapshot_blob) {
   i::V8::SetSnapshotBlob(snapshot_blob);
 }
 
+void* v8::ArrayBuffer::Allocator::Realloc(void* data, size_t length) {
+  UNIMPLEMENTED();
+}
+
 namespace {
 
 class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {