In which cases is it okay to allocate on the stack

I am currently learning Vulkan. While studying several tutorials, roughly the same code appears repeatedly:

VkInstance g_instance;

void SetupVulkan(){
    VkApplicationInfo appInfo = {};
    //Set appInfo attributes

    VkInstanceCreateInfo instanceInfo = {};
    instanceInfo.pApplicationInfo = &appInfo;
    //Set ICI attributes

    VkResult result = vkCreateInstance(&instanceInfo, NULL, &g_instance);
    //Error handling
}

This creates a VkApplicationInfo and a VkInstanceCreateInfo on the stack. Doesn't this lead to some problems, when leaving the function and using the g_instance? Is vkCreateInstance copying all the data of the VkApplicationInfo and the VkInstanceCreateInfo? If so, then why doesn't the official manual tell me about this behavior? http://ift.tt/2gcy2hg

The same pattern repeats throughout the API. How can I find out in which cases allocations on the stack are okay, and in which cases a more persistent way should be preferred like the Heap or Global Memory?