c++保证进入main执行前，执行全部全局static对象的构造函数吗？

还是大召唤一下吧
@幻 の上帝
@矮油不要酱紫哎 （打对没...）

ISO/IEC C++ N3485
3.6.2 Initialization of non-local variables [basic.start.init]
4
It is implementation-defined whether the dynamic initialization of a non-local variable with static storage
duration is done before the first statement of main. If the initialization is deferred to some point in time
after the first statement of main, it shall occur before the first odr-use (3.2) of any function or variable
defined in the same translation unit as the variable to be initialized.34
（Example 略）

C++只保证在main执行前初始化完成，有一些全局的对象，在执行main之前就已经建好了。