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 ce0be64bd55112382903a2565e67ecd2a1d9c0b6..1273dc87d98a22bb9d1e824f101f3a21bf50f4c6 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -5068,6 +5068,13 @@ 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 9a0a271d3c323f20da7ad70f929907c3c8906b3e..a39c4e3f10d5079406f469b76a1ea96c8b2831d8 100644
--- a/src/api/api.cc
+++ b/src/api/api.cc
@@ -533,6 +533,10 @@ 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 {