extern void __VERIFIER_error() __attribute__ ((__noreturn__)); void __blast_assert() { ERROR: __VERIFIER_error(); } typedef struct Toplev { int a; struct Inner { int b; struct Innermost{ int c; } y; } x; } Stuff; int main() { struct Toplev good = { 1, {2, {3}}}; good.x.y.c = 4; ((good.x.y.c == 4) ? (0) : __blast_assert ()); return 0; }