thanks. that makes sense. #include <stdio.h> void foo (int n) { struct S { int x[n]; int y; }; printf("offset: %ld\n", __builtin_offsetof(

thanks. that makes sense. #include <stdio.h> void foo (int n) { struct S { int x[n]; int y; }; printf("offset: %ld\n", __builtin_offsetof(struct S, y)); } int main() { foo(2); foo(16); } offset: 8 offset: 64