GCC warnings when compiling files in src

[targos]

I don't know if they are all fixable, but the first one is very annoying because it is emitted for (almost?) each C++ file:

In file included from ../src/node.h:63,
 from ../src/api/callback.cc:1:
../deps/v8/include/v8.h: In instantiation of ‘void v8::PersistentBase<T>::SetWeak(P*, typename v8::WeakCallbackInfo<P>::Callback, v8::WeakCallbackType) [with P = node::BaseObject; T = v8::Object; typename v8::WeakCallbackInfo<P>::Callback = void (*)(const v8::WeakCallbackInfo<node::BaseObject>&)]’:
../src/base_object-inl.h:104:42: required from here
../deps/v8/include/v8.h:9585:16: warning: cast between incompatible function types from ‘v8::WeakCallbackInfo<node::BaseObject>::Callback’{aka ‘void (*)(const v8::WeakCallbackInfo<node::BaseObject>&)’} to ‘Callback’{aka ‘void (*)(const v8::WeakCallbackInfo<void>&)’} [-Wcast-function-type]
 reinterpret_cast<Callback>(callback), type);
 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In file included from ../src/node_buffer.cc:29:
../src/string_search.h: In function ‘size_t node::stringsearch::SearchString(node::stringsearch::Vector<const Char>, node::stringsearch::Vector<const Char>, size_t) [with Char = short unsigned int]’:
../src/string_search.h:113:30: warning: ‘search’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 return (this->*strategy_)(subject, index);
 ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
../src/string_search.h: In function ‘size_t node::stringsearch::SearchString(node::stringsearch::Vector<const Char>, node::stringsearch::Vector<const Char>, size_t) [with Char = unsigned char]’:
../src/string_search.h:113:30: warning: ‘search’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 return (this->*strategy_)(subject, index);
 ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~

[refack]

https://gist.github.com/refack/1cc202e9b507d63d108d5ba55293e540 with 167 warnings from MSVC