You copied the Doc URL to your clipboard.
__attribute__((zero_init)) variable attribute
The section
attribute specifies that a variable must be placed in a particular data section. The zero_init
attribute specifies that a variable with no initializer is placed in a ZI data section. If an initializer is specified, an error is reported.
Example
__attribute__((zero_init)) int x; /* in section ".bss" */ __attribute__((section("mybss"), zero_init)) int y; /* in section "mybss" */