> For example, people rely on how C lays things out in memory, so C compilers have to lay things out in memory in specific ways. One can rely on C compilers la

> For example, people rely on how C lays things out in memory, so C compilers have to lay things out in memory in specific ways. One can rely on C compilers laying out things in memory in a specific way only within a struct and when compiler-specific alignment/packing attributes are used. All other assumptions about variables being adjacent in memory are wrong and lead to undefined behavior.