• Quiet week.

  • The bamboo is gone! Some gardeners dug it out in record time on Wednesday morning.

  • Everyone was sick with a nasty cold. We’re all better or at least mostly better now but it was considerably less fun than that time we all had COVID.

  • I saw this:

    #include <stdio.h>
#include <stddef.h>

int add(int m, int n) {
        struct add {
                char a[m];
                char b[n];
                char c;
        };
        return offsetof(struct add, c);
}

int main(void) {
        printf("%d\n", add(2, 3));
        return 0;
}

    The general gist of how this works is easy to understand but I was surprised to see it still compiles and runs when modified such that m and n are only known at runtime. How does that work?! I did not expect it to be possible to declare a struct with arbitrary length members at runtime. I am trying to figure it out from the disassembled code but, predictably, time is short. Maybe I’ll know next week.