HHVM 是 Facebook 推出的用来执行 PHP 代码的虚拟机，它是一个 PHP 的 JIT(Just-In-Time) 编译器，同时具有产生快速代码和即时编译的优点。
HHVM 3.27.2 是一个纯 bug 修复版本，更新内容如下：
- Fix various crashes on MacOS due to differing assembler conventions
- Fix deadlock when calling HH\facts_parse in multiple simultaneous requests
- Fix conditional breakpoints in debugger
- Fix hang in debugger shutdown
- Fix IDE symbol search for namespaced symbols that start with a lowercase letter; this usually means namespaced functions.
- Fix hh_client crash on shutdown in some situations
- Fix crash when an unsupported experimental feature was enabled
发行说明
