[kanbankaren]

30 years in C/C++ here.

Give an example of UB code that you have committed in real life, not from blogs. I am genuinely curious.

[gf000]

All the memory safety vulnerabilities, which are the majority of bugs in most C/C++ projects?

[jech]

> Give an example of UB code that you have committed in real life

    struct foo {
        ...
        atomic_int v;
        ...
    };
    
    struct foo x;
    memset(&x, 0, sizeof(x));

[rwbt]

I don't think it's UB if you init the struct before using it atomically from multiple threads.