cc -O2 -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations signal/struct-sigevent-sigev_notify_attributes.c -o signal/struct-sigevent-sigev_notify_attributes -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lintl -lcrypt
signal/struct-sigevent-sigev_notify_attributes.c: In function 'foo':
signal/struct-sigevent-sigev_notify_attributes.c:4:25: error: initialization of 'pthread_attr_t **' from incompatible pointer type 'void **' [-Werror=incompatible-pointer-types]
    4 |  pthread_attr_t **qux = &bar->sigev_notify_attributes;
      |                         ^
cc1: all warnings being treated as errors