touch fish第008期

1. 船新的构造提案，realloc

   1. STL algorithms for trivial relocation
   2. Polymorphic types aren’t trivially relocatable

2. C++ 实现 shared_ptr / weak_ptr /enable_shared_from_this

3. static key

4. Bounded dynamicism with cross-modifying code

5. malloc大size时的缺页