c++

struct bit{
  bool value: 1;
};
#include <stdio.h>
int main(){

   bit arr[8];
  printf("%d", sizeof (arr));
}

source_file.cpp: In function ‘int main()’:
source_file.cpp:8:28: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long unsigned int’ [-Wformat=]
   printf("%d", sizeof (arr));
                            ^

8

cplusplus_gcc assumed, other valid options are cplusplus_clang, visual_cplusplus, you can be more specific next time.