Wrong. It specifies that objects with static storage duration that aren't explicitely initialized are initialized with null pointers, or zeros depending on type. 6.7.8.10.
OK, that means that the comments of my last mesage don't apply to variables of this type. So they should at least optionally be excluded from any feature to initialize variables
Hence if .bss is to be used to place such objects then the runtime system _must_ make sure that it's zero initialized.
