#include <stdio.h>

#define $(x) [&](void)->auto{try{return (x);}catch(...){return decltype(x){};}}()

int foo() {
    int a[1];
    return a[10005000];
}

int main() {
    $(printf("Hello, kcalb\n"));
    $(printf("%d\n", foo()));
    $(printf("Hello, kcalb\n"));
}