cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sys_mman/munlockall.c -o sys_mman/munlockall -D_POSIX_C_SOURCE=202405L -lm -lpthread -lnetwork -lbsd -latomic
sys_mman/munlockall.c:6:20: error: 'munlockall' undeclared here (not in a function); did you mean 'munlock'?
    6 | int (*foo)(void) = munlockall;
      |                    ^~~~~~~~~~
      |                    munlock