cc -O2 -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations poll/struct-timespec.c -o poll/struct-timespec -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lintl -lcrypt
poll/struct-timespec.c:2:17: error: storage size of 'foo' isn't known
    2 | struct timespec foo;
      |                 ^~~